Repository: oom-ai/oomstore
Pull request #858 (2021-12-30 03:53:36)

Feat/online stream push
this PR does:
1. implement method `Push` for online/mysql
2. add unit test for online/mysql

relate #801

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> Merging [#858](https://codecov.io/gh/oom-ai/oomstore/pull/858?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai) (aacf516) into [main](https://codecov.io/gh/oom-ai/oomstore/commit/3579241cef027569ae138a92aeb41e0ee931a238?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai) (3579241) will **increase** coverage by `0.49%`.
> The diff coverage is `88.00%`.

> :exclamation: Current head aacf516 differs from pull request most recent head 7a425de. Consider uploading reports for the commit 7a425de to get more accurate results
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```diff
@@            Coverage Diff             @@
##             main     #858      +/-   ##
==========================================
+ Coverage   50.58%   51.07%   +0.49%     
==========================================
  Files          81       81              
  Lines        3189     3252      +63     
==========================================
+ Hits         1613     1661      +48     
- Misses       1382     1396      +14     
- Partials      194      195       +1     
```


| [Impacted Files](https://codecov.io/gh/oom-ai/oomstore/pull/858?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai) | Coverage Δ | |
|---|---|---|
| [internal/database/online/mysql/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb25saW5lL215c3FsL3N0b3JlLmdv) | `92.68% <88.00%> (+4.44%)` | :arrow_up: |
| [internal/database/offline/postgres/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9wb3N0Z3Jlcy9zdG9yZS5nbw==) | `60.86% <0.00%> (-21.49%)` | :arrow_down: |
| [internal/database/offline/redshift/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9yZWRzaGlmdC9zdG9yZS5nbw==) | `47.82% <0.00%> (-16.88%)` | :arrow_down: |
| [internal/database/dbutil/schema.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2UvZGJ1dGlsL3NjaGVtYS5nbw==) | `65.15% <0.00%> (-2.04%)` | :arrow_down: |
| [internal/database/offline/mysql/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9teXNxbC9zdG9yZS5nbw==) | `89.47% <0.00%> (+4.85%)` | :arrow_up: |
| [internal/database/offline/bigquery/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9iaWdxdWVyeS9zdG9yZS5nbw==) | `72.72% <0.00%> (+5.15%)` | :arrow_up: |
| [internal/database/offline/snowflake/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9zbm93Zmxha2Uvc3RvcmUuZ28=) | `74.19% <0.00%> (+6.19%)` | :arrow_up: |
| [internal/database/offline/sqlite/store.go](https://codecov.io/gh/oom-ai/oomstore/pull/858/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=oom-ai#diff-aW50ZXJuYWwvZGF0YWJhc2Uvb2ZmbGluZS9zcWxpdGUvc3RvcmUuZ28=) | `73.68% <0.00%> (+12.14%)` | :arrow_up: |

------

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Patch:
diff --git a/README.md b/README.md
index c802432b..54d7229f 100644
--- a/README.md
+++ b/README.md
@@ -37,11 +37,8 @@ You can interact with oomstore with CLI, Go API or Python API. See [Architecture
 Compared to other feature store implementations, oomstore has its edges:
 
 - Fast. Benchmark shows oomstore performs QPS > 50k and latency < 0.3 ms using Redis as the Online Store. For more details, see [benchmark](https://oom.ai/docs/benchmark).
-- Pluggable. We support a wide range of databases already (see below), and there are more to come.
-  - Online Store: DynamoDB, Redis, TiKV, Cassandra, TiDB, PostgreSQL, MySQL, SQLite.
-  - Offline Store: Snowflake, Redshift, BigQuery, TiDB, PostgreSQL, MySQL, SQLite.
-  - Metadata Store: TiDB, PostgreSQL, MySQL, SQLite.
-- Simple. In the minimal, oomstore can run aganist a single MySQL/PostgreSQL database. This helps get started quickly, and you can always switch to a different database later without having to rewrite your code.
+- Pluggable. We support a wide range of databases: PostgreSQL and Redis for Online Store, PostgreSQL for Metadata Store, and PostgreSQL for Offline Store. There are more to come, and you can easily add!
+- Simple. In the minimal, oomstore can run aganist a PostgreSQL database. This helps get started quickly, and you can always switch to a different database later without having to rewrite your code.
 
 ## Quickstart
 
diff --git a/go.sum b/go.sum
index 54a8ba74..00fb62f7 100644
--- a/go.sum
+++ b/go.sum
@@ -24,6 +24,7 @@ cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWc
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@@ -40,6 +41,7 @@ cloud.google.com/go/datacatalog v1.0.0 h1:KHjIs525XbESSGHxwEKHTzkwfvj7xxYrCy4gcv
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@@ -195,12 +230,12 @@ github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWH
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@@ -209,6 +244,7 @@ github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
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@@ -246,9 +282,11 @@ github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5y
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@@ -263,9 +301,10 @@ github.com/form3tech-oss/jwt-go v3.2.2+incompatible/go.mod h1:pbq4aXjuKjdthFRnoD
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@@ -318,6 +357,8 @@ github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LB
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@@ -333,6 +374,7 @@ github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4er
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@@ -371,9 +413,11 @@ github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEW
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@@ -425,6 +469,7 @@ github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5m
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@@ -432,6 +477,7 @@ github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH
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@@ -445,7 +491,9 @@ github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFb
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@@ -459,20 +507,25 @@ github.com/hashicorp/go-msgpack v0.5.3/go.mod h1:ahLV/dePpqEmjfWmKiqvPkv/twdG7iP
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@@ -504,11 +557,13 @@ github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCV
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@@ -520,6 +575,7 @@ github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQL
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@@ -568,6 +624,7 @@ github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4
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@@ -579,17 +636,25 @@ github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3N
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@@ -618,6 +683,7 @@ github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7J
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@@ -626,6 +692,7 @@ github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144T
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@@ -650,6 +717,7 @@ github.com/pingcap/errors v0.11.5-0.20201126102027-b0a155152ca3 h1:LllgC9eGfqzkf
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@@ -658,18 +726,21 @@ github.com/pingcap/goleveldb v0.0.0-20191226122134-f82aafb29989/go.mod h1:O17Xtb
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@@ -686,6 +757,7 @@ github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDf
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@@ -699,6 +771,7 @@ github.com/prometheus/common v0.0.0-20181113130724-41aa239b4cce/go.mod h1:daVV7q
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@@ -709,6 +782,7 @@ github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7z
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@@ -743,6 +817,10 @@ github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6Mwd
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@@ -752,10 +830,13 @@ github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B
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@@ -765,6 +846,7 @@ github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnIn
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@@ -825,14 +907,19 @@ github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9dec
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+go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
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 go.etcd.io/etcd v0.5.0-alpha.5.0.20200824191128-ae9734ed278b/go.mod h1:yVHk9ub3CSBatqGNg7GRmsnfLWtoW60w4eDYfh7vHDg=
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+go.etcd.io/etcd/client/pkg/v3 v3.5.0/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
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+go.etcd.io/etcd/client/v2 v2.305.0/go.mod h1:h9puh54ZTgAKtEbut2oe9P4L/oqKCVB6xsXlzd7alYQ=
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@@ -847,14 +934,15 @@ go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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+go.uber.org/goleak v1.1.10 h1:z+mqJhf6ss6BSfSM671tgKyZBFPTTJM+HLxnhPC3wu0=
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-go.uber.org/goleak v1.1.11-0.20210813005559-691160354723 h1:sHOAIxRGBp443oHZIPB+HsUGaksVCXVQENPxwTfQdH4=
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@@ -869,6 +957,7 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
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+go.uber.org/zap v1.17.0 h1:MTjgFu6ZLKvY6Pvaqk97GlxNBuMpV4Hy/3P6tRGlI2U=
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@@ -889,6 +978,8 @@ golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPh
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 golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20211202192323-5770296d904e h1:MUP6MR3rJ7Gk9LEia0LP2ytiH6MuCfs7qYz+47jGdD8=
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 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 h1:0es+/5331RGQPcXlMfP+WrnIIS6dNnNRe0WB02W0F4M=
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -926,6 +1017,7 @@ golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRu
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
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 golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
@@ -945,6 +1037,7 @@ golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20181005035420-146acd28ed58/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181023162649-9b4f9f5ad519/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -996,6 +1089,8 @@ golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211118161319-6a13c67c3ce4/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211206223403-eba003a116a9 h1:HhGRSJWlxVO54+s9MeOVrZrbnwv+6oZQIvsUrMUte7U=
+golang.org/x/net v0.0.0-20211206223403-eba003a116a9/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211216030914-fe4d6282115f h1:hEYJvxw1lSnWIl8X9ofsYMklzaDs90JI2az5YMd4fPM=
 golang.org/x/net v0.0.0-20211216030914-fe4d6282115f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -1009,10 +1104,12 @@ golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210402161424-2e8d93401602/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1 h1:B333XXssMuKQeBwiNODx4TupZy7bf4sxFZnN2ZOcvUE=
 golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 h1:RerP+noqYHUQ8CMRcPlC2nvTa4dcBIjegkuWdcUDuqg=
 golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
@@ -1109,6 +1206,7 @@ golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210816183151-1e6c022a8912/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210818153620-00dd8d7831e7/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210908233432-aa78b53d3365/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -1117,6 +1215,7 @@ golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211117180635-dee7805ff2e1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211205182925-97ca703d548d h1:FjkYO/PPp4Wi0EAUOVLxePm7qVW4r4ctbWpURyuOD0E=
 golang.org/x/sys v0.0.0-20211205182925-97ca703d548d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211210111614-af8b64212486/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e h1:fLOSk5Q00efkSvAm+4xcoXD+RRmLmmulPn5I3Y9F2EM=
@@ -1147,6 +1246,7 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
@@ -1167,6 +1267,7 @@ golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191030062658-86caa796c7ab/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191107010934-f79515f33823/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191108193012-7d206e10da11/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191114200427-caa0b0f7d508/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -1208,6 +1309,7 @@ golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.5 h1:ouewzE6p+/VEB31YYnTbEJdi8pFqKp4P4n85vwo3DHA=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1244,6 +1346,7 @@ google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34q
 google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
 google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU=
 google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94=
+google.golang.org/api v0.44.0/go.mod h1:EBOGZqzyhtvMDoxwS97ctnh0zUmYY6CxqXsc1AvkYD8=
 google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo=
 google.golang.org/api v0.48.0/go.mod h1:71Pr1vy+TAZRPkPs/xlCf5SsU8WjuAWv1Pfjbtukyy4=
 google.golang.org/api v0.50.0/go.mod h1:4bNT5pAuq5ji4SRZm+5QIkjny9JAyVD/3gaSihNefaw=
@@ -1253,6 +1356,7 @@ google.golang.org/api v0.55.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqiv
 google.golang.org/api v0.56.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
 google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI=
 google.golang.org/api v0.59.0/go.mod h1:sT2boj7M9YJxZzgeZqXogmhfmRWDtPzT31xkieUbuZU=
+google.golang.org/api v0.60.0 h1:eq/zs5WPH4J9undYM9IP1O7dSr7Yh8Y0GtSCpzGzIUk=
 google.golang.org/api v0.60.0/go.mod h1:d7rl65NZAkEQ90JFzqBjcRq1TVeG5ZoGV3sSpEnnVb4=
 google.golang.org/api v0.61.0/go.mod h1:xQRti5UdCmoCEqFxcz93fTl338AVqDgyaDRuOZ3hg9I=
 google.golang.org/api v0.62.0/go.mod h1:dKmwPCydfsad4qCH08MSdgWjfHOyfpd4VtDGgRFdavw=
@@ -1330,6 +1434,7 @@ google.golang.org/genproto v0.0.0-20210924002016-3dee208752a0/go.mod h1:5CzLGKJ6
 google.golang.org/genproto v0.0.0-20211008145708-270636b82663/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20211021150943-2b146023228c/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20211028162531-8db9c33dc351/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211118181313-81c1377c94b1 h1:b9mVrqYfq3P4bCdaLg1qtBnPzUYgglsIdjZkL/fQVOE=
 google.golang.org/genproto v0.0.0-20211118181313-81c1377c94b1/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20211129164237-f09f9a12af12/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20211203200212-54befc351ae9/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
@@ -1367,6 +1472,7 @@ google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnD
 google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
 google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A=
 google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc v1.43.0 h1:Eeu7bZtDZ2DpRCsLhUlcrLnvYaMK1Gz86a+hMVvELmM=
 google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
@@ -1401,6 +1507,7 @@ gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/R
 gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
diff --git a/internal/database/dbutil/schema.go b/internal/database/dbutil/schema.go
index 88346620..51429a91 100644
--- a/internal/database/dbutil/schema.go
+++ b/internal/database/dbutil/schema.go
@@ -33,8 +33,6 @@ var (
 				return fmt.Sprintf(`"%s" VARCHAR(%d)`, entity.Name, entity.Length)
 			case types.BackendMySQL:
 				return fmt.Sprintf("`%s` VARCHAR(%d)", entity.Name, entity.Length)
-			case types.BackendBigQuery:
-				return fmt.Sprintf(`%s STRING`, entity.Name)
 			default:
 				return fmt.Sprintf("%s VARCHAR(%d)", entity.Name, entity.Length)
 			}
diff --git a/internal/database/metadata/sqlutil/util.go b/internal/database/metadata/sqlutil/util.go
index d100f7e1..609858c5 100644
--- a/internal/database/metadata/sqlutil/util.go
+++ b/internal/database/metadata/sqlutil/util.go
@@ -5,11 +5,3 @@ import "fmt"
 func OfflineBatchTableName(groupID int, revisionID int64) string {
 	return fmt.Sprintf("offline_batch_%d_%d", groupID, revisionID)
 }
-
-func OfflineStreamSnapshotTableName(groupID int, revisionID int) string {
-	return fmt.Sprintf("offline_stream_snapshot_%d_%d", groupID, revisionID)
-}
-
-func OfflineStreamCdcTableName(groupID int, revisionID int) string {
-	return fmt.Sprintf("offline_stream_cdc_%d_%d", groupID, revisionID)
-}
diff --git a/internal/database/offline/bigquery/join.go b/internal/database/offline/bigquery/join.go
index 1243def0..be671b93 100644
--- a/internal/database/offline/bigquery/join.go
+++ b/internal/database/offline/bigquery/join.go
@@ -98,13 +98,13 @@ func dropTable(ctx context.Context, db *bigquery.Client, tableName string) error
 
 const READ_JOIN_RESULT_QUERY = `
 SELECT
-	{{ qt .EntityRowsTableName }}.{{ qt .EntityKey }},
-	{{ qt .EntityRowsTableName }}.{{ qt .UnixMilli }},
+	{{ qt .EntityRowsTableName }}.{{ .EntityKeyStr }},
+	{{ qt .EntityRowsTableName }}.{{ .UnixMilliStr }},
 	{{ fieldJoin .Fields }}
 FROM {{ $.DatasetID }}.{{ qt .EntityRowsTableName }}
 {{ range $pair := .JoinTables }}
 	{{- $t1 := qt $pair.LeftTable -}}
 	{{- $t2 := qt $pair.RightTable -}}
 lEFT JOIN {{ $.DatasetID }}.{{ $t2 }}
-ON {{ $t1 }}.{{ qt $.UnixMilli }} = {{ $t2 }}.{{ qt $.UnixMilli }} AND {{ $t1 }}.{{ qt $.EntityKey }} = {{ $t2 }}.{{ qt $.EntityKey }}
+ON {{ $t1 }}.{{ $.UnixMilliStr }} = {{ $t2 }}.{{ $.UnixMilliStr }} AND {{ $t1 }}.{{ $.EntityKeyStr }} = {{ $t2 }}.{{ $.EntityKeyStr }}
 {{end}}`
diff --git a/internal/database/offline/bigquery/store.go b/internal/database/offline/bigquery/store.go
index 7b86bf60..ee502300 100644
--- a/internal/database/offline/bigquery/store.go
+++ b/internal/database/offline/bigquery/store.go
@@ -4,8 +4,6 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/oom-ai/oomstore/internal/database/offline/sqlutil"
-
 	"github.com/spf13/cast"
 	"google.golang.org/api/iterator"
 
@@ -70,12 +68,3 @@ func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTab
 
 	return &schema, nil
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend:    types.BackendBigQuery,
-		BigQueryDB: db.Client,
-		DatasetID:  &db.datasetID,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/mock_offline/store.go b/internal/database/offline/mock_offline/store.go
index 4ffdf912..82151d9f 100644
--- a/internal/database/offline/mock_offline/store.go
+++ b/internal/database/offline/mock_offline/store.go
@@ -109,20 +109,6 @@ func (mr *MockStoreMockRecorder) Ping(ctx interface{}) *gomock.Call {
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Ping", reflect.TypeOf((*MockStore)(nil).Ping), ctx)
 }
 
-// Snapshot mocks base method.
-func (m *MockStore) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "Snapshot", ctx, opt)
-	ret0, _ := ret[0].(error)
-	return ret0
-}
-
-// Snapshot indicates an expected call of Snapshot.
-func (mr *MockStoreMockRecorder) Snapshot(ctx, opt interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Snapshot", reflect.TypeOf((*MockStore)(nil).Snapshot), ctx, opt)
-}
-
 // TableSchema mocks base method.
 func (m *MockStore) TableSchema(ctx context.Context, tableName string) (*types.DataTableSchema, error) {
 	m.ctrl.T.Helper()
diff --git a/internal/database/offline/mysql/store.go b/internal/database/offline/mysql/store.go
index 824cda4e..cff8171b 100644
--- a/internal/database/offline/mysql/store.go
+++ b/internal/database/offline/mysql/store.go
@@ -43,11 +43,3 @@ func (db *DB) Join(ctx context.Context, opt offline.JoinOpt) (*types.JoinResult,
 func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTableSchema, error) {
 	return nil, fmt.Errorf("not implemented")
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend: types.BackendMySQL,
-		SqlxDB:  db.DB,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/postgres/store.go b/internal/database/offline/postgres/store.go
index 1104a43c..2378c339 100644
--- a/internal/database/offline/postgres/store.go
+++ b/internal/database/offline/postgres/store.go
@@ -46,11 +46,3 @@ func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTab
 	}
 	return sqlutil.SqlxTableSchema(ctx, db, BackendType, rows)
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend: types.BackendPostgres,
-		SqlxDB:  db.DB,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/redshift/store.go b/internal/database/offline/redshift/store.go
index ec0581bc..2d2eb66c 100644
--- a/internal/database/offline/redshift/store.go
+++ b/internal/database/offline/redshift/store.go
@@ -48,11 +48,3 @@ func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTab
 	}
 	return sqlutil.SqlxTableSchema(ctx, db, BackendType, rows)
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend: types.BackendRedshift,
-		SqlxDB:  db.DB,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/snowflake/store.go b/internal/database/offline/snowflake/store.go
index 6b9e78c4..b7a1ba22 100644
--- a/internal/database/offline/snowflake/store.go
+++ b/internal/database/offline/snowflake/store.go
@@ -58,11 +58,3 @@ func (db *DB) Join(ctx context.Context, opt offline.JoinOpt) (*types.JoinResult,
 func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTableSchema, error) {
 	return nil, fmt.Errorf("not implemented")
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend: types.BackendSnowflake,
-		SqlxDB:  db.DB,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/sqlite/store.go b/internal/database/offline/sqlite/store.go
index 5ba1d326..d333c4f6 100644
--- a/internal/database/offline/sqlite/store.go
+++ b/internal/database/offline/sqlite/store.go
@@ -44,11 +44,3 @@ func (db *DB) Join(ctx context.Context, opt offline.JoinOpt) (*types.JoinResult,
 func (db *DB) TableSchema(ctx context.Context, tableName string) (*types.DataTableSchema, error) {
 	return nil, fmt.Errorf("not implemented")
 }
-
-func (db *DB) Snapshot(ctx context.Context, opt offline.SnapshotOpt) error {
-	dbOpt := dbutil.DBOpt{
-		Backend: types.BackendSQLite,
-		SqlxDB:  db.DB,
-	}
-	return sqlutil.Snapshot(ctx, dbOpt, opt)
-}
diff --git a/internal/database/offline/sqlutil/join.go b/internal/database/offline/sqlutil/join.go
index 452e6995..2e4402f9 100644
--- a/internal/database/offline/sqlutil/join.go
+++ b/internal/database/offline/sqlutil/join.go
@@ -108,6 +108,12 @@ func JoinOneGroup(ctx context.Context, dbOpt dbutil.DBOpt, opt offline.JoinOneGr
 	if len(opt.Features) == 0 {
 		return nil, nil
 	}
+	qt, err := dbutil.QuoteFn(dbOpt.Backend)
+	if err != nil {
+		return nil, err
+	}
+	entityKeyStr := qt("entity_key")
+	unixMilliStr := qt("unix_milli")
 
 	// Step 1: create temporary joined table
 	snapshotJoinedTableName, err := PrepareJoinedTable(ctx, dbOpt, opt.Features, opt.Entity, opt.GroupName, opt.ValueNames)
@@ -120,9 +126,9 @@ func JoinOneGroup(ctx context.Context, dbOpt dbutil.DBOpt, opt offline.JoinOneGr
 	for _, r := range opt.RevisionRanges {
 		query, err := buildJoinQuery(joinQueryParams{
 			TableName:           snapshotJoinedTableName,
+			EntityKeyStr:        entityKeyStr,
 			EntityName:          opt.Entity.Name,
-			EntityKey:           "entity_key",
-			UnixMilli:           "unix_milli",
+			UnixMilliStr:        unixMilliStr,
 			Columns:             columns,
 			EntityRowsTableName: opt.EntityRowsTableName,
 			SnapshotTable:       r.SnapshotTable,
@@ -148,9 +154,9 @@ func JoinOneGroup(ctx context.Context, dbOpt dbutil.DBOpt, opt offline.JoinOneGr
 	for _, r := range opt.RevisionRanges {
 		query, err := buildCdcJoinQuery(cdcJoinQueryParams{
 			TableName:           cdcJoinedTableName,
-			EntityKey:           "entity_key",
+			EntityKeyStr:        entityKeyStr,
 			EntityName:          opt.Entity.Name,
-			UnixMilli:           "unix_milli",
+			UnixMilliStr:        unixMilliStr,
 			ValueNames:          opt.ValueNames,
 			FeatureNames:        opt.Features.Names(),
 			SnapshotJoinedTable: snapshotJoinedTableName,
@@ -178,6 +184,8 @@ func ReadJoinedTable(ctx context.Context, dbOpt dbutil.DBOpt, opt ReadJoinedTabl
 	if err != nil {
 		return nil, err
 	}
+	entityKeyStr := qt("entity_key")
+	unixMilliStr := qt("unix_milli")
 
 	// Step 1: join temporary tables
 	/*
@@ -235,8 +243,8 @@ func ReadJoinedTable(ctx context.Context, dbOpt dbutil.DBOpt, opt ReadJoinedTabl
 	}
 	query, err := buildReadJoinResultQuery(opt.ReadJoinResultQuery, readJoinResultQueryParams{
 		EntityRowsTableName: opt.EntityRowsTableName,
-		EntityKey:           "entity_key",
-		UnixMilli:           "unix_milli",
+		EntityKeyStr:        entityKeyStr,
+		UnixMilliStr:        unixMilliStr,
 		Fields:              fields,
 		JoinTables:          joinTablePairs,
 		Backend:             dbOpt.Backend,
diff --git a/internal/database/offline/sqlutil/join_helper.go b/internal/database/offline/sqlutil/join_helper.go
index 46d384d1..ac5b49e1 100644
--- a/internal/database/offline/sqlutil/join_helper.go
+++ b/internal/database/offline/sqlutil/join_helper.go
@@ -18,54 +18,54 @@ const (
 )
 
 const JOIN_QUERY = `
-INSERT INTO {{ qt .TableName }} ( {{ qt .EntityKey }}, {{ qt .UnixMilli }}, {{ columnJoin .Columns }})
+INSERT INTO {{ qt .TableName }} ( {{ .EntityKeyStr }}, {{ .UnixMilliStr }}, {{ columnJoin .Columns }})
 SELECT
-	l.{{ qt .EntityKey }},
-	l.{{ qt .UnixMilli }},
+	l.{{ .EntityKeyStr }} AS entity_key,
+	l.{{ .UnixMilliStr }} AS unix_milli,
 	{{ columnJoin .Columns }}
 FROM
 	{{ qt .EntityRowsTableName }} AS l
 LEFT JOIN {{ qt .SnapshotTable }} AS r
-ON l.{{ qt .EntityKey }} = r.{{ qt .EntityName }}
-WHERE l.{{ qt .UnixMilli }} >= ? AND l.{{ qt .UnixMilli }} < ?
+ON l.{{ .EntityKeyStr }} = r.{{ qt .EntityName }}
+WHERE l.{{ .UnixMilliStr }} >= ? AND l.{{ .UnixMilliStr }} < ?
 `
 
 const CDC_JOIN_QUERY = `
-INSERT INTO {{ qt .TableName }} ( {{ qt .EntityKey }}, {{ qt .UnixMilli }}, {{ columnJoinWithComma .ValueNames }} {{ columnJoin .FeatureNames }})
+INSERT INTO {{ qt .TableName }} ( {{ .EntityKeyStr }}, {{ .UnixMilliStr }}, {{ columnJoinWithComma .ValueNames }} {{ columnJoin .FeatureNames }})
 SELECT
-	l.{{ qt .EntityKey }},
-	l.{{ qt .UnixMilli }},
+	l.{{ .EntityKeyStr }} AS entity_key,
+	l.{{ .UnixMilliStr }} AS unix_milli,
 	{{ columnJoinWithComma .ValueNames }}
 	{{ featureValue .FeatureNames }}
 FROM
 	{{ qt .SnapshotJoinedTable }} AS l
 LEFT JOIN {{ qt .CdcTable }} AS r
-ON l.{{ qt .EntityKey }} = r.{{ qt .EntityName }} AND l.{{ qt .UnixMilli }} >= r.{{ qt .UnixMilli }}
+ON l.{{ .EntityKeyStr }} = r.{{ qt .EntityName }} AND l.{{ .UnixMilliStr }} >= r.{{ .UnixMilliStr }}
 WHERE
-	l.{{ qt .UnixMilli }} >= ? AND l.{{ qt .UnixMilli }} < ? AND
+	l.{{ .UnixMilliStr }} >= ? AND l.{{ .UnixMilliStr }} < ? AND
 	(
-		r.{{ qt .UnixMilli }} IS NULL OR
-		r.{{ qt .UnixMilli }} = (
-			SELECT MAX({{ qt .UnixMilli }})
+		r.{{ .UnixMilliStr }} IS NULL OR
+		r.{{ .UnixMilliStr }} = (
+			SELECT MAX({{ .UnixMilliStr }})
 			FROM {{ qt .CdcTable }} AS r2
 			WHERE
-				l.{{ qt .EntityKey }} = r2.{{ qt .EntityName }} AND
-				l.{{ qt .UnixMilli }} >= r2.{{ qt .UnixMilli }}
+				l.{{ .EntityKeyStr }} = r2.{{ qt .EntityName }} AND
+				l.{{ .UnixMilliStr }} >= r2.{{ .UnixMilliStr }}
 		)
 	)
 `
 
 const READ_JOIN_RESULT_QUERY = `
 SELECT
-	{{ qt .EntityRowsTableName }}.{{ qt .EntityKey }},
-	{{ qt .EntityRowsTableName }}.{{ qt .UnixMilli }},
+	{{ qt .EntityRowsTableName }}.{{ .EntityKeyStr }},
+	{{ qt .EntityRowsTableName }}.{{ .UnixMilliStr }},
 	{{ fieldJoin .Fields }}
 FROM {{ qt .EntityRowsTableName }}
 {{ range $pair := .JoinTables }}
 	{{- $t1 := qt $pair.LeftTable -}}
 	{{- $t2 := qt $pair.RightTable -}}
 lEFT JOIN {{ $t2 }}
-ON {{ $t1 }}.{{ qt $.UnixMilli }} = {{ $t2 }}.{{ qt $.UnixMilli }} AND {{ $t1 }}.{{ qt $.EntityKey }} = {{ $t2 }}.{{ qt $.EntityKey }}
+ON {{ $t1 }}.{{ $.UnixMilliStr }} = {{ $t2 }}.{{ $.UnixMilliStr }} AND {{ $t1 }}.{{ $.EntityKeyStr }} = {{ $t2 }}.{{ $.EntityKeyStr }}
 {{end}}`
 
 func PrepareJoinedTable(
@@ -252,8 +252,8 @@ type joinTablePair struct {
 
 type readJoinResultQueryParams struct {
 	EntityRowsTableName string
-	EntityKey           string
-	UnixMilli           string
+	EntityKeyStr        string
+	UnixMilliStr        string
 	Fields              []string
 	JoinTables          []joinTablePair
 	Backend             types.BackendType
@@ -281,9 +281,9 @@ func buildReadJoinResultQuery(query string, params readJoinResultQueryParams) (s
 
 type joinQueryParams struct {
 	TableName           string
+	EntityKeyStr        string
 	EntityName          string
-	EntityKey           string
-	UnixMilli           string
+	UnixMilliStr        string
 	Columns             []string
 	EntityRowsTableName string
 	SnapshotTable       string
@@ -319,9 +319,9 @@ func buildJoinQuery(params joinQueryParams) (string, error) {
 
 type cdcJoinQueryParams struct {
 	TableName           string
+	EntityKeyStr        string
 	EntityName          string
-	EntityKey           string
-	UnixMilli           string
+	UnixMilliStr        string
 	ValueNames          []string
 	FeatureNames        []string
 	SnapshotJoinedTable string
diff --git a/internal/database/offline/sqlutil/snapshot.go b/internal/database/offline/sqlutil/snapshot.go
deleted file mode 100644
index 12095bef..00000000
--- a/internal/database/offline/sqlutil/snapshot.go
+++ /dev/null
@@ -1,141 +0,0 @@
-package sqlutil
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"strings"
-	"text/template"
-
-	"github.com/oom-ai/oomstore/internal/database/dbutil"
-	"github.com/oom-ai/oomstore/pkg/oomstore/types"
-
-	"github.com/oom-ai/oomstore/internal/database/metadata/sqlutil"
-	"github.com/oom-ai/oomstore/internal/database/offline"
-)
-
-const SNAPSHOT_QUERY = `
-INSERT INTO {{ qt .CurrSnapshotTableName }} ({{ qt .EntityName }}, {{ columnJoin .FeatureNames }})
-SELECT
-	l.{{ qt .EntityName }},
-	{{ featureValue .FeatureNames }}
-FROM {{ qt .PrevSnapshotTableName }} AS l
-LEFT JOIN
-(
-	SELECT
-		t1.*
-	FROM
-		{{ qt .CurrCdcTableName }} AS t1
-	JOIN
-		(SELECT
-			{{ qt .EntityName }},
-			MAX({{ qt .UnixMilli }}) AS {{ qt .UnixMilli }}
-		FROM {{ qt .CurrCdcTableName }}
-		GROUP BY {{ qt .EntityName }}) AS t2
-	ON t1.{{ qt .EntityName }} = t2.{{ qt .EntityName }} AND t1.{{ qt .UnixMilli }} = t2.{{ qt .UnixMilli }}
-) AS r
-ON l.{{ qt .EntityName }} = r.{{ qt .EntityName }}
-{{ .Union }}
-SELECT
-	r.{{ qt .EntityName }},
-	{{ featureValue .FeatureNames }}
-FROM
-(
-	SELECT
-		t1.*
-	FROM
-		{{ qt .CurrCdcTableName }} AS t1
-	JOIN
-		(SELECT
-			{{ qt .EntityName }},
-			MAX({{ qt .UnixMilli }}) AS {{ qt .UnixMilli }}
-		FROM {{ qt .CurrCdcTableName }}
-		GROUP BY {{ qt .EntityName }}) AS t2
-	ON t1.{{ qt .EntityName }} = t2.{{ qt .EntityName }} AND t1.{{ qt .UnixMilli }} = t2.{{ qt .UnixMilli }}
-) AS r
-LEFT JOIN
-{{ qt .PrevSnapshotTableName }} AS l
-ON l.{{ qt .EntityName }} = r.{{ qt .EntityName }}
-`
-
-func Snapshot(ctx context.Context, dbOpt dbutil.DBOpt, opt offline.SnapshotOpt) error {
-	prevSnapshotTableName := sqlutil.OfflineStreamSnapshotTableName(opt.Group.ID, opt.PrevRevisionID)
-	currSnapshotTableName := sqlutil.OfflineStreamSnapshotTableName(opt.Group.ID, opt.RevisionID)
-	currCdcTableName := sqlutil.OfflineStreamCdcTableName(opt.Group.ID, opt.RevisionID)
-
-	if dbOpt.Backend == types.BackendBigQuery {
-		currSnapshotTableName = fmt.Sprintf("%s.%s", *dbOpt.DatasetID, currSnapshotTableName)
-		prevSnapshotTableName = fmt.Sprintf("%s.%s", *dbOpt.DatasetID, prevSnapshotTableName)
-		currCdcTableName = fmt.Sprintf("%s.%s", *dbOpt.DatasetID, currCdcTableName)
-	}
-
-	schema, err := dbutil.BuildCreateSchema(currSnapshotTableName, opt.Group.Entity, opt.Features, dbOpt.Backend)
-	if err != nil {
-		return err
-	}
-
-	if err = dbOpt.ExecContext(ctx, schema, nil); err != nil {
-		return err
-	}
-	query, err := buildSnapshotQuery(snapshotQueryParams{
-		EntityName:            opt.Group.Entity.Name,
-		UnixMilli:             "unix_milli",
-		FeatureNames:          opt.Features.Names(),
-		PrevSnapshotTableName: prevSnapshotTableName,
-		CurrSnapshotTableName: currSnapshotTableName,
-		CurrCdcTableName:      currCdcTableName,
-		Backend:               dbOpt.Backend,
-	})
-	if err != nil {
-		return err
-	}
-	if err = dbOpt.ExecContext(ctx, query, nil); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-type snapshotQueryParams struct {
-	EntityName            string
-	UnixMilli             string
-	FeatureNames          []string
-	PrevSnapshotTableName string
-	CurrSnapshotTableName string
-	CurrCdcTableName      string
-	Union                 string
-	Backend               types.BackendType
-	DatasetID             *string
-}
-
-func buildSnapshotQuery(params snapshotQueryParams) (string, error) {
-	if params.Backend == types.BackendBigQuery {
-		params.Union = "UNION DISTINCT"
-	} else {
-		params.Union = "UNION"
-	}
-	qt, err := dbutil.QuoteFn(params.Backend)
-	if err != nil {
-		return "", err
-	}
-
-	t := template.Must(template.New("snapshot").Funcs(template.FuncMap{
-		"qt": qt,
-		"columnJoin": func(columns []string) string {
-			return qt(columns...)
-		},
-		"featureValue": func(features []string) string {
-			values := make([]string, 0, len(features))
-			for _, f := range features {
-				values = append(values, fmt.Sprintf("(CASE WHEN r.%s IS NULL THEN l.%s ELSE r.%s END) AS %s", qt(f), qt(f), qt(f), f))
-			}
-			return strings.Join(values, ",")
-		},
-	}).Parse(SNAPSHOT_QUERY))
-
-	buf := bytes.NewBuffer(nil)
-	if err := t.Execute(buf, params); err != nil {
-		return "", err
-	}
-	return buf.String(), nil
-}
diff --git a/internal/database/offline/store.go b/internal/database/offline/store.go
index 305ccc46..b09dc275 100644
--- a/internal/database/offline/store.go
+++ b/internal/database/offline/store.go
@@ -13,7 +13,6 @@ type Store interface {
 	Import(ctx context.Context, opt ImportOpt) (int64, error)
 
 	TableSchema(ctx context.Context, tableName string) (*types.DataTableSchema, error)
-	Snapshot(ctx context.Context, opt SnapshotOpt) error
 
 	Ping(ctx context.Context) error
 	io.Closer
diff --git a/internal/database/offline/types.go b/internal/database/offline/types.go
index 15cb333c..f1450f5f 100644
--- a/internal/database/offline/types.go
+++ b/internal/database/offline/types.go
@@ -51,10 +51,3 @@ type CSVSource struct {
 	Reader    *bufio.Reader
 	Delimiter string
 }
-
-type SnapshotOpt struct {
-	Group          *types.Group
-	Features       types.FeatureList
-	RevisionID     int
-	PrevRevisionID int
-}
diff --git a/internal/database/online/mysql/store.go b/internal/database/online/mysql/store.go
index 3f76e8f1..35bdb7c6 100644
--- a/internal/database/online/mysql/store.go
+++ b/internal/database/online/mysql/store.go
@@ -2,6 +2,8 @@ package mysql
 
 import (
 	"context"
+	"fmt"
+	"strings"
 
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/jmoiron/sqlx"
@@ -44,8 +46,36 @@ func (db *DB) Purge(ctx context.Context, revisionID int) error {
 	return sqlutil.Purge(ctx, db.DB, revisionID, BackendType)
 }
 
+// TODO: refactor with text/template
 func (db *DB) Push(ctx context.Context, opt online.PushOpt) error {
-	panic("Implement me!")
+	tableName := sqlutil.OnlineStreamTableName(opt.GroupID)
+
+	insertColumns := append([]string{opt.Entity.Name}, opt.FeatureNames...)
+	insertColumnPlaceholders := make([]string, 0, len(insertColumns))
+	for i := 0; i < len(insertColumnPlaceholders); i++ {
+		insertColumnPlaceholders = append(insertColumnPlaceholders, "?")
+	}
+
+	insertValues := append([]interface{}{opt.EntityKey}, opt.FeatureValues...)
+	insertValuePlaceholders := make([]string, 0, len(insertValues))
+	for i := 0; i < len(insertValues); i++ {
+		insertValuePlaceholders = append(insertValuePlaceholders, "?")
+	}
+
+	updateValues := opt.FeatureValues
+	updatePlaceholders := make([]string, 0, len(opt.FeatureNames))
+	for _, name := range opt.FeatureNames {
+		updatePlaceholders = append(updatePlaceholders, fmt.Sprintf("%s=?", name))
+	}
+
+	query := fmt.Sprintf(`INSERT INTO %s (%s) VALUES(%s) ON DUPLICATE KEY UPDATE %s`,
+		tableName,
+		strings.Join(insertColumns, ","),
+		strings.Join(insertValuePlaceholders, ","),
+		strings.Join(updatePlaceholders, ","),
+	)
+	_, err := db.ExecContext(ctx, query, append(insertValues, updateValues...)...)
+	return err
 }
 
 func (db *DB) PrepareStreamTable(ctx context.Context, opt online.PrepareStreamTableOpt) error {
diff --git a/internal/database/online/types.go b/internal/database/online/types.go
index d3cbb1bf..6d35e63d 100644
--- a/internal/database/online/types.go
+++ b/internal/database/online/types.go
@@ -27,8 +27,11 @@ type ImportOpt struct {
 }
 
 type PushOpt struct {
-	Entity  *types.Entity
-	Feature types.Feature
+	Entity        *types.Entity
+	EntityKey     string
+	GroupID       int
+	FeatureNames  []string
+	FeatureValues []interface{}
 }
 
 type PrepareStreamTableOpt struct {


Test patch:
diff --git a/internal/database/offline/bigquery/store_test.go b/internal/database/offline/bigquery/store_test.go
index 7b4fa2a9..1ea828fa 100644
--- a/internal/database/offline/bigquery/store_test.go
+++ b/internal/database/offline/bigquery/store_test.go
@@ -102,7 +102,3 @@ func TestTableSchema(t *testing.T) {
 		}
 	})
 }
-
-func TestSnapshot(t *testing.T) {
-	test_impl.TestSnapshot(t, prepareStore, destroyStore(DATASET_ID))
-}
diff --git a/internal/database/offline/mysql/store_test.go b/internal/database/offline/mysql/store_test.go
index c84a2e29..5f1ea698 100644
--- a/internal/database/offline/mysql/store_test.go
+++ b/internal/database/offline/mysql/store_test.go
@@ -44,7 +44,3 @@ func TestImport(t *testing.T) {
 func TestJoin(t *testing.T) {
 	test_impl.TestJoin(t, prepareStore, runtime_mysql.DestroyStore(DATABASE))
 }
-
-func TestSnapshot(t *testing.T) {
-	test_impl.TestSnapshot(t, prepareStore, runtime_mysql.DestroyStore(DATABASE))
-}
diff --git a/internal/database/offline/snowflake/store_test.go b/internal/database/offline/snowflake/store_test.go
index dace253e..3a88600f 100644
--- a/internal/database/offline/snowflake/store_test.go
+++ b/internal/database/offline/snowflake/store_test.go
@@ -67,7 +67,3 @@ func TestImport(t *testing.T) {
 func TestJoin(t *testing.T) {
 	test_impl.TestJoin(t, prepareStore, destroyStore(DATABASE))
 }
-
-func TestSnapshot(t *testing.T) {
-	test_impl.TestSnapshot(t, prepareStore, destroyStore(DATABASE))
-}
diff --git a/internal/database/offline/sqlite/store_test.go b/internal/database/offline/sqlite/store_test.go
index 0cf6c67f..e92653d6 100644
--- a/internal/database/offline/sqlite/store_test.go
+++ b/internal/database/offline/sqlite/store_test.go
@@ -43,7 +43,3 @@ func TestImport(t *testing.T) {
 func TestJoin(t *testing.T) {
 	test_impl.TestJoin(t, prepareStore, destroyStore)
 }
-
-func TestSnapshot(t *testing.T) {
-	test_impl.TestSnapshot(t, prepareStore, destroyStore)
-}
diff --git a/internal/database/offline/test_impl/join.go b/internal/database/offline/test_impl/join.go
index b1a0d4af..4ab565d3 100644
--- a/internal/database/offline/test_impl/join.go
+++ b/internal/database/offline/test_impl/join.go
@@ -17,8 +17,8 @@ import (
 	"github.com/oom-ai/oomstore/pkg/oomstore/types"
 )
 
-func TestJoin(t *testing.T, prepareStore PrepareStoreFn, destroyStore DestroyStoreFn) {
-	t.Cleanup(destroyStore)
+func TestJoin(t *testing.T, prepareStore PrepareStoreFn, destoryStore DestroyStoreFn) {
+	t.Cleanup(destoryStore)
 
 	ctx, store := prepareStore(t)
 	defer store.Close()
diff --git a/internal/database/offline/test_impl/snapshot.go b/internal/database/offline/test_impl/snapshot.go
deleted file mode 100644
index d6e756f8..00000000
--- a/internal/database/offline/test_impl/snapshot.go
+++ /dev/null
@@ -1,83 +0,0 @@
-package test_impl
-
-import (
-	"bufio"
-	"sort"
-	"strings"
-	"testing"
-
-	"github.com/spf13/cast"
-
-	"github.com/stretchr/testify/assert"
-
-	"github.com/oom-ai/oomstore/internal/database/offline"
-	"github.com/oom-ai/oomstore/pkg/oomstore/types"
-)
-
-func TestSnapshot(t *testing.T, prepareStore PrepareStoreFn, destroyStore DestroyStoreFn) {
-	t.Cleanup(destroyStore)
-
-	ctx, store := prepareStore(t)
-	defer store.Close()
-
-	group := &types.Group{
-		ID: 1,
-		Entity: &types.Entity{
-			Name:   "device",
-			Length: 10,
-		},
-	}
-	unixMilli := &types.Feature{
-		Name:      "unix_milli",
-		ValueType: types.Int64,
-	}
-	features, _ := prepareFeatures(true)
-
-	buildTestSnapshotTable(ctx, t, store, features, "offline_stream_snapshot_1_1", &offline.CSVSource{
-		Reader: bufio.NewReader(strings.NewReader(`1234,xiaomi,100
-1235,apple,200
-1236,oneplus,155
-`)),
-		Delimiter: ",",
-	})
-
-	buildTestSnapshotTable(ctx, t, store, append(features, unixMilli), "offline_stream_cdc_1_2", &offline.CSVSource{
-		Reader: bufio.NewReader(strings.NewReader(`1234,xiaomi-1,120,2
-1235,apple-2,115,14
-1234,xiaomi-1,130,10
-1237,pixel,200,11
-1235,apple-1,113,15
-`)),
-		Delimiter: ",",
-	})
-
-	err := store.Snapshot(ctx, offline.SnapshotOpt{
-		Group:          group,
-		Features:       features,
-		RevisionID:     2,
-		PrevRevisionID: 1,
-	})
-	assert.NoError(t, err)
-
-	actual, errs := store.Export(ctx, offline.ExportOpt{
-		SnapshotTable: "offline_stream_snapshot_1_2",
-		EntityName:    "device",
-		Features:      features,
-	})
-	values := make([][]interface{}, 0)
-	for row := range actual {
-		values = append(values, row)
-	}
-	sort.Slice(values, func(i, j int) bool {
-		return cast.ToInt64(values[i][0]) < cast.ToInt64(values[j][0])
-	})
-	expected := [][]interface{}{
-		{"1234", "xiaomi-1", int64(130)},
-		{"1235", "apple-1", int64(113)},
-		{"1236", "oneplus", int64(155)},
-		{"1237", "pixel", int64(200)},
-	}
-	assert.Equal(t, expected, values)
-	assert.NoError(t, <-errs)
-
-}
diff --git a/internal/database/online/mysql/store_test.go b/internal/database/online/mysql/store_test.go
index 01733a87..447eea4a 100644
--- a/internal/database/online/mysql/store_test.go
+++ b/internal/database/online/mysql/store_test.go
@@ -57,6 +57,10 @@ func TestPrepareStreamTable(t *testing.T) {
 	test_impl.TestPrepareStreamTable(t, prepareStore, runtime_mysql.DestroyStore(DATABASE))
 }
 
+func TestPush(t *testing.T) {
+	test_impl.TestPush(t, prepareStore, runtime_mysql.DestroyStore(DATABASE))
+}
+
 func TestPing(t *testing.T) {
 	test_impl.TestPing(t, prepareStore, runtime_mysql.DestroyStore(DATABASE))
 }
diff --git a/internal/database/online/test_impl/stream.go b/internal/database/online/test_impl/stream.go
index 3b4814f6..9dedfbf7 100644
--- a/internal/database/online/test_impl/stream.go
+++ b/internal/database/online/test_impl/stream.go
@@ -98,3 +98,58 @@ func TestPrepareStreamTable(t *testing.T, prepareStore PrepareStoreFn, destroySt
 		})
 	}
 }
+
+func TestPush(t *testing.T, prepareStore PrepareStoreFn, destoryStore DestroyStoreFn) {
+	t.Cleanup(destoryStore)
+
+	ctx, store := prepareStore(t)
+	defer store.Close()
+
+	var (
+		entity   = simpleStreamData.entity
+		group    = simpleStreamData.groups[0]
+		feature1 = simpleStreamData.features[0]
+		feature2 = simpleStreamData.features[1]
+	)
+
+	assert.NoError(t, store.PrepareStreamTable(ctx, online.PrepareStreamTableOpt{
+		Entity:  &entity,
+		GroupID: group.ID,
+	}))
+
+	assert.NoError(t, store.PrepareStreamTable(ctx, online.PrepareStreamTableOpt{
+		Entity:  &entity,
+		GroupID: group.ID,
+		Feature: feature1,
+	}))
+
+	assert.NoError(t, store.Push(ctx, online.PushOpt{
+		Entity:        &entity,
+		EntityKey:     "user1",
+		GroupID:       group.ID,
+		FeatureNames:  []string{simpleStreamData.features[0].Name},
+		FeatureValues: []interface{}{"post1"},
+	}))
+
+	assert.NoError(t, store.Push(ctx, online.PushOpt{
+		Entity:        &entity,
+		EntityKey:     "user1",
+		GroupID:       group.ID,
+		FeatureNames:  []string{simpleStreamData.features[0].Name},
+		FeatureValues: []interface{}{"post2"},
+	}))
+
+	assert.NoError(t, store.PrepareStreamTable(ctx, online.PrepareStreamTableOpt{
+		Entity:  &entity,
+		GroupID: group.ID,
+		Feature: feature2,
+	}))
+
+	assert.NoError(t, store.Push(ctx, online.PushOpt{
+		Entity:        &entity,
+		EntityKey:     "user1",
+		GroupID:       group.ID,
+		FeatureNames:  []string{feature1.Name, feature2.Name},
+		FeatureValues: []interface{}{"post1", "post2"},
+	}))
+}