semvec/pypi-packages huggingface dataset:
migra-idempotent 1.7
Like `diff` but for PostgreSQL schemas
License: Unlicense

# migra: Like diff but for Postgres schemas

- ## compare schemas
- ## autogenerate migration scripts
- ## autosync your development database from your application models
- ## make your schema changes testable, robust, and (mostly) automatic

`migra` is a schema diff tool for PostgreSQL, written in Python. Use it in your python scripts, or from the command line like this:

    $ migra postgresql:///a postgresql:///b
    alter table "public"."products" add column newcolumn text;

    alter table "public"."products" add constraint "x" CHECK ((price > (0)::numeric));

`migra` magically figures out all the statements required to get from A to B.

Most features of PostgreSQL are supported.

**Migra supports PostgreSQL >= 9 only.** Known issues exist with earlier versions. More recent versions are more comprehensively tested. Development resources are limited, and feature support rather than backwards compatibility is prioritised.

## THE DOCS

Documentation is at [databaseci.com/docs/migra](https://databaseci.com/docs/migra).

## Folks, schemas are good

Schema migrations are without doubt the most cumbersome and annoying part of working with SQL databases. So much so that some people think that schemas themselves are bad!

But schemas are actually good. Enforcing data consistency and structure is a good thing. It’s the migration tooling that is bad, because it’s harder to use than it should be. ``migra`` is an attempt to change that, and make migrations easy, safe, and reliable instead of something to dread.

## Contributing

Contributing is easy. [Jump into the issues](https://github.com/djrobstep/migra/issues), find a feature or fix you'd like to work on, and get involved. Or create a new issue and suggest something completely different. If you're unsure about any aspect of the process, just ask.

## Credits

- [djrobstep](https://github.com/djrobstep): initial development, maintenance
- [alvarogzp](https://github.com/alvarogzp): privileges support
- [seblucas](https://github.com/seblucas): docker improvements
- [MOZGIII](https://github.com/MOZGIII): docker support
- [mshahbazi](https://github.com/mshahbazi): misc fixes and enhancements
schemainspect-idempotent 0.6
Schema inspection for PostgreSQL (and possibly others)
License: Unlicense

# `schemainspect`: SQL Schema Inspection

Schema inspection for PostgreSQL (and potentially others in the future).

Inspects tables, views, materialized views, constraints, indexes, sequences, enums, functions, and extensions. Handles table partitioning and inheritance.

**Limitations:** Function inspection only confirmed to work with SQL/PLPGSQL languages so far.

## Basic Usage

Get an inspection object from an already opened SQLAlchemy session or connection as follows:

    from schemainspect import get_inspector
    from sqlbag import S

    with S('postgresql:///example') as s:
        i = get_inspector(s)

The inspection object has attributes for tables, views, and all the other things it tracks. At each of these attributes you'll find a dictionary (OrderedDict) mapping from fully-qualified-and-quoted-name-of-thing-in-database to information object.

For instance, the information about a table *books* would be accessed as follows:

    >>> books_table = i.tables['"public"."books"']
    >>> books_table.name
    'books'
    >>> books_table.schema
    'public'
    >>> [each.name for each in books_table.columns]
    ['id', 'title', 'isbn']


## Documentation

Documentation is a bit patchy at the moment. Watch this space!


## Author Credits

Initial development, maintenance:

- [djrobstep](https://github.com/djrobstep)

Contributions:

- [BenSjoberg](https://github.com/BenSjoberg)
- [johto](https://github.com/johto)


## Install

Install with [pip](https://pip.pypa.io):

    $ pip install schemainspect

To install psycopg2 (the PostgreSQL driver) at the same time as well:

    $ pip install schemainspect[pg]