teleren/devto huggingface dataset:
Batch Processing Mode
Tags: opengauss
Published: 2023-03-29 07:51:40

openGauss supports the execution of SQL statements from text files and provides the gsql tool to process SQL statements in batches.

Batch processing is recommended in the following scenarios:

If you run a query repeatedly (for example, daily or weekly), you can set it as a script to avoid repeated input.
You can generate a new query from an existing similar query by copying and editing the script file.
For multi-line statements or multi-statement sequences, if an error occurs, you do not need to input all the content again. You only need to edit the script to correct the error, and then execute it again.
You can distribute the script to others so that they can also execute the statements.
When interactive use is not allowed in some cases, you must use the batch processing mode.
Syntax

```
gsql -d dbname -p port -f filename
```
Parameter Description
dbname
Specifies the name of the database to connect to.

port

Specifies the port number of the database server.

-f filename

Specifies that files are used as the command source instead of interactively-entered commands. This parameter specifies the path and name of the text file to be read.

Examples
Create the sql.txt file locally. The file content is as follows:

```
CREATE TABLE customer
(
    c_customer_sk             integer,
    c_customer_id             char(5),
    c_first_name              char(6),
    c_last_name               char(8),
    Amount                    integer
);

INSERT INTO customer(c_customer_sk, c_customer_id, c_first_name,Amount) VALUES (3769, 'hello', 'Grace', 1000);
INSERT INTO customer (c_customer_sk, c_first_name) VALUES (3769, 'Grace');
INSERT INTO customer (c_customer_sk, c_customer_id, c_first_name) VALUES (3769, 'hello', DEFAULT);
INSERT INTO customer (c_customer_sk, c_customer_id, c_first_name,Amount) VALUES 
    (6885, 'maps', 'Joes',2200),
    (4321, 'tpcds', 'Lily',3000),
    (9527, 'world', 'James',5000);
Execute the SQL statements in the sql.txt file.
```


```
gsql -d postgres -p 21013 -f /home/user/sql.txt
The result is as follows:
```

 

```
CREATE TABLE
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 3
```
Aliases
Tags: opengauss
Published: 2023-03-29 07:46:16

SQL can rename a table or a column. The name is the alias of the table or the column. Aliases are created to improve the readability of table names or column names. In SQL, AS is used to create an alias.

Syntax
Column alias syntax


```
SELECT 
{ * | [column [ AS ] output_name, ...] }
[ FROM from_item [, ...] ]
[ WHERE condition ];
```
Table alias syntax

```
SELECT column1, column2.... 
FROM table_name AS output_name 
WHERE [condition];
```

Parameter Description
output_name

You may use the AS output_name clause to give an alias for an output column. The alias is used for displaying the output column. The name, value, and type keywords can be used as column aliases.

Examples
Use C to indicate the alias of the customer_t1 table to query data in the table.

```
openGauss=# SELECT c.c_first_name,c.amount FROM customer_t1 AS c;
 c_first_name | amount
--------------+--------
 Grace        |   1000
 Grace        |
              |
 Joes         |   2200
 James        |   5000
 Local        |   3000
 Lily         |   1000
 Lily         |   2000
(8 rows)
```
Tags: opengauss
Published: 2023-03-29 07:45:33

NULL indicates unknown data. NULL and 0 cannot be compared because they are not equivalent to each other.

When creating a table, you can specify whether NULL can be stored in a column. For details, see NOT NULL. This section describes the IS NULL and IS NOT NULL operators.

Create the customer_t1 table. The data in the table is as follows:

```
openGauss=# SELECT * FROM customer_t1;
 c_customer_sk | c_customer_id | c_first_name | c_last_name | amount
---------------+---------------+--------------+-------------+--------
          3869 | hello         | Grace        |             |   1000
          3869 |               | Grace        |             |
          3869 | hello         |              |             |
          6985 | maps          | Joes         |             |   2200
          9976 | world         | James        |             |   5000
          4421 | Admin         | Local        |             |   3000
(6 rows)
```
IS NOT NULL
In the WHERE clause, locate the column whose value is NULL.

For example, list the column whose c_customer_id is not set to a null value in the customer_t1 table.


```
openGauss=# SELECT * FROM customer_t1 WHERE c_customer_id IS NOT NULL;
 c_customer_sk | c_customer_id | c_first_name | c_last_name | amount
---------------+---------------+--------------+-------------+--------
          3869 | hello         | Grace        |             |   1000
          3869 | hello         |              |             |
          6985 | maps          | Joes         |             |   2200
          9976 | world         | James        |             |   5000
          4421 | Admin         | Local        |             |   3000
(5 rows)
```

IS NULL
In the WHERE clause, locate the column whose value is NULL.

For example, list the column whose c_customer_id is set to a null value in the customer_t1 table.

```
openGauss=# SELECT * FROM customer_t1 WHERE c_customer_id IS NULL;
 c_customer_sk | c_customer_id | c_first_name | c_last_name | amount
---------------+---------------+--------------+-------------+--------
          3869 |               | Grace        |             |
(1 row)
```
UNION Clause
Tags: opengauss
Published: 2023-03-29 07:45:23

The UNION clause computes the set union of the rows returned by the involved SELECT statements. The SELECT statement inside the UNION clause must have the same number of columns, and the values of the columns must have similar data types. In addition, the sequence of columns in each SELECT statement must be the same.

Syntax
UNION: retains only one value if duplicate values exist in the results.

```
SELECT column_name(s) FROM table_name1
UNION
SELECT column_name(s) FROM table_name2;
UNION ALL: displays all results, including duplicate values.
```
 
```
SELECT column_name(s) FROM table_name1
UNION ALL
SELECT column_name(s) FROM table_name2;
```

Examples
Take table1 and table2 as an example. The table data is as follows:

```
openGauss=# SELECT * FROM table1;
 name  | city
-------+------
 Joes  | BJ
 Lily  | BJ
 James | SH
 Grace | SZ
(4 rows)
```

```
openGauss=# SELECT * FROM table2;
 id | name  | dept
----+-------+-------
  1 | Tommy | IT
  2 | Lily  | IT
  3 | Li    | sales
  4 | Grace | IT
(4 rows)
```

UNION

Lists the names of all employees in two tables and retains only one duplicate value.

```
openGauss=# SELECT name FROM table1 UNION SELECT name FROM table2;
 name
-------
 Li
 Lily
 James
 Grace
 Joes
 Tommy
(6 rows)
```
UNION ALL

Lists the names of all employees in two tables, including duplicate values.


```
openGauss=# SELECT name FROM table1 UNION ALL SELECT name FROM table2;
 name
-------
 Joes
 Lily
 James
 Grace
 Tommy
 Lily
 Li
 Grace
(8 rows)
```
What advice do you have for someone starting out as a developer and trying to build a portfolio of projects?
Tags: discuss, programming, codenewbie
Published: 2023-03-29 07:40:12

Building a portfolio of projects is a great way for new developers to showcase their skills and gain practical experience in software development. As someone who has experience in this field, what advice would you give to someone who is just starting out and trying to build their portfolio?

## Consider sharing specific tips on the following topics:

**Choosing the right projects**

What types of projects should new developers focus on, and how can they choose projects that will help them build a strong portfolio?

**Setting achievable goals**

How can new developers set realistic goals for themselves and their projects, and avoid getting overwhelmed by the scope of their work?

**Finding resources and support**

What resources and support networks are available to help new developers learn and grow, and how can they take advantage of these resources?

**Developing good habits**

What habits and practices can new developers develop to stay focused, motivated, and organized while building their portfolio?

**Showcasing their work**

How can new developers effectively showcase their projects to potential employers, and what types of information and documentation should they include to make their portfolio stand out?

Be sure to provide specific examples and practical advice that new developers can implement right away. Also, consider sharing your own experiences and lessons learned, as well as any resources or tools that you have found helpful along the way.
Introduction
Published: 2023-03-29 07:38:09

<p>I’ve always been interested in technology and computers. When I was a kid, I spent hours playing games on my friend’s computer and learning how to use the mouse and keyboard. As I got older, my interest grew stronger and stronger until one day it hit me: I wanted to become an engineer who worked with computers!</p><p>I decided that civil engineering would be a good choice because it allowed me to work with both people and machines — and since then I’ve been working hard at my studies so that someday soon I might get paid for doing what I love most: creating new things with technology!</p><h3>My Background in Civil Engineering</h3><p>I have a Bachelor of Science in Civil Engineering from the University of California, Berkeley. I also have several years of experience working as a civil engineer in both the private and public sectors.</p><p>I worked on many different types of projects during my time as an engineer:</p><ul><li>Building bridges and roads</li><li>Designing water treatment plants and wastewater systems</li><li>Developing storm-water drainage systems for new developments (including detention ponds)</li></ul><figure><img alt="" src="https://cdn-images-1.medium.com/max/1024/1*PLkz2Y6ERrNSOSJPb4UlZA.png" /></figure><ul><li>I learned how to use AutoCAD software for designing structures like buildings or bridges, which was very helpful when I switched careers because it gave me some basic programming skills that could be applied to other areas like web development or mobile applications development!</li></ul><h3>My Transition to Software Engineering</h3><p>I’ll share with you the steps I took and the resources I used, as well as some of the challenges that came along with making this transition.</p><h3>My Experience Learning to Code</h3><p>I learned to code by building projects. I started with learning Python, which is a great language for beginners because it’s easy to read and write, has a large community of developers and there are lots of resources available online.</p><p>I then moved on to learning JavaScript, which is the most popular programming language in the world today (by far). It’s also used by many frontend frameworks like React Native and VueJS so if you want to build mobile apps or web apps then this will be important for you too!</p><p>In my journey as an engineer, I’ve worked on many different types of projects including:</p><ul><li>Building an app that helps people find their way around cities using GPS coordinates;</li><li>Working on data analytics tools for financial institutions;</li><li>Creating systems that monitor traffic patterns across multiple cities simultaneously;</li></ul><img src="https://medium.com/_/stat?event=post.clientViewed&referrerSource=full_rss&postId=79c181a3d87f" width="1" height="1" alt=""></br><p style="color:#757CF9;">This article is published w/ <a target="_blank" href="https://scattr.io?ref=dev">Scattr  ↗️</a></p>
Susmoy Debnath | Portfolio Website
Tags: thesusmoy, susmoydebnath, susmoyincrosoft, incrosoft
Published: 2023-03-29 07:27:15

Hi 👋🏼,

I'm [Susmoy](https://susmoydebnath.xyz), Founder & CEO at [Incrosoft](https://www.incrosoft.com) and also a Full Stack Web Application Developer from Bangladesh and a Programming Content Creator on [Youtube](https://youtube.com/@thesusmoy). I Spend most of time coding outstanding projects or recording tutorials.

[Incrosoft Inc](https://www.incrosoft.com). is the largest software solutions provider in Bangladesh. We are proud to be the trusted software development partner for businesses of all sizes in the world, helping them to achieve their goals through innovative and reliable software solutions.

I also founded a programmer's community group called [MERN Stack Developers](https://www.facebook.com/groups/mernstackdevelopers). Our aim is to bringing the programmers closer together.

You can follow me on [Twitter](https://twitter.com/thesusmoy), [LinkedIn](https://www.linkedin.com/in/thesusmoy/) and [GitHub](https://github.com/thesusmoy).
HAVING Clause
Tags: opengauss
Published: 2023-03-29 07:21:59

The HAVING clause filters data after grouping.

The WHERE clause sets conditions on selected columns, while the HAVING clause sets conditions on groups created by the GROUP BY clause.

Syntax
 

```
SELECT 
{ * | [column, ...] }
[ FROM from_item [, ...] ]
[ WHERE condition ]
[ GROUP BY grouping_element [, ...] ]
[ HAVING condition [, ...] ]
[ ORDER BY {expression [ ASC | DESC ] }];
```

Parameter Description
HAVING clause

Selects special groups by working with the GROUP BY clause. The HAVING clause compares some attributes of groups with a constant. Only groups that match the logical expression in the HAVING clause are extracted.

Examples
In the following example, data is grouped based on the value of c_first_name which is less than 2.

 
openGauss=# SELECT c_first_name FROM customer_t1 GROUP BY c_first_name HAVING count(c_first_name) < 2;
The result is as follows:


```
 c_first_name
--------------
 James
 Local

 Joes
(4 rows)
```

In the following example, data is grouped based on the value of c_first_name which is greater than 1.

 
```
openGauss=# SELECT c_first_name FROM customer_t1 GROUP BY c_first_name HAVING count(c_first_name) > 1;
The result is as follows:
```

```
 c_first_name
--------------
 Grace
 Lily
(2 rows)

```
Active Listening
Tags: people, communication, activelistening, storybytes
Published: 2023-03-29 07:21:35


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/emperm8t77h0cr6srfol.png)
In many ways of progressing to be a better version of yourself, listening will drive you further than talking.  While listening, we learn about the opposite and ourselves. But why is it not always easy? Well, the biggest challenge starts with ourselves. The opposite might need to finish speaking out, but we are ready to reply or interrupt. So how can we be better at listening? Let’s be more Active while listening. Communication isn’t always easy; therefore, give the opposite person the pace to convey the message. How does the body communicate? Is the message clear? Can it be summarised? Are you paying the most attention without neglecting it? Are you judging, or are you listening? All that said try to convey your care by asking open-ended questions. We often assume it’s obvious that we’re practising active listening and that others know they’re being heard. But the reality is that we often struggle with tasks and roles that directly relate to active listening. Accepting criticism well, dealing with people’s feelings, and trying to understand what others think all require robust and active listening skills. Even with the best intentions, you may unconsciously signal that you aren’t listening. If you work to develop better active listening techniques, you’ll become known as a good listener and a better leader.
Susmoy Debnath | @thesusmoy
Tags: incrosoft, incrosoftbangladesh, incrosofteducation, thesusmoy
Published: 2023-03-29 07:21:12

[Susmoy Debnath](https://susmoydebnath.xyz) (born February 20, 2001), is a Bangladeshi Tech Entrepreneur, Software Developer & Programming Enthusiast. He is the Founder and CEO of [Incrosoft](https://www.incrosoft.com) .

**

## Early Life
**
[Susmoy Debnath](https://susmoydebnath.xyz) was born in Dhanbari, Dhaka, on February 20, 2001, the son of Haran Debnath and Kamona Debnath. He graduated SSC from Hazrabari High School in 2018 and HSC from Dhanbari Govt. College in 2020.

Growing up in Dhanbari, [Susmoy](https://susmoydebnath.xyz) showed an early interest in computer programming. He began to learn programming at a young age and quickly developed an interest in creating software applications. He completed his SSC from Hazrabari High School in 2018 and his HSC from Dhanbari Govt. College in 2020.

Throughout his education, [Susmoy](https://susmoydebnath.xyz) pursued his interest in computer science and honed his technical skills. After completing his HSC, he decided to pursue a career in software development. He began his professional career as a software developer and quickly gained a reputation for his technical skills and ability to deliver high-quality software products on time and within budget.

His passion for technology and entrepreneurship led him to start [Incrosoft Inc](https://www.incrosoft.com), where he continues to deliver innovative software solutions to clients. He is also actively involved in technology communities and shares his knowledge with others.

**

## Career
**
[Susmoy Debnath](https://susmoydebnath.xyz) is an accomplished Tech Entrepreneur, Software Developer & Programming Enthusiast. He is the founder and CEO of [Incrosoft Inc](https://www.incrosoft.com), a software company he founded in 2020. With a strong background in computer science and a passion for technology, [Susmoy](https://susmoydebnath.xyz) has built a successful career in the software development industry. He has a proven track record of delivering innovative solutions that meet the needs of his clients. In addition to his technical skills, Susmoy is a natural leader and is able to inspire and motivate his team to achieve their best. He is committed to delivering high-quality software products and services to his clients, and his dedication to his work has helped Incrosoft Inc. to become one of the most respected software companies in the industry.

**

## External Link
**
Website : https://susmoydebnath.xyz

Facebook : https://www.facebook.com/thesusmoy

Instagram : https://www.instagram.com/thesusmoy

Twitter : https://twitter.com/thesusmoy

Youtube : https://www.youtube.com/@thesusmoy

LinkedIn : https://www.linkedin.com/in/thesusmoy
GROUP BY Clause
Tags: opengauss
Published: 2023-03-29 07:19:22

The GROUP BY clause is used together with the SELECT statement to group the same data. You can group one or more columns, but the columns to be grouped must exist.

Syntax
 

```
SELECT 
{ * | [column, ...] }
[ FROM from_item [, ...] ]
[ WHERE condition ]
[ GROUP BY grouping_element [, ...] ]
[ ORDER BY {expression [ ASC | DESC ] }];
```

Parameter Description
GROUP BY clause

Groups the query results based on the values of one or more columns. The query results with the same value are in the same group.

The GROUP BY clause is placed after the WHRER clause and before the ORDER BY clause in the SELECT statement.

Examples
The customer_t1 table contains duplicate values of c_first_name. The duplicate values of c_first_name are in the same group, and the sum of the values of Amount is calculated.

 

```
openGauss=# SELECT c_first_name, sum(Amount)  FROM customer_t1 GROUP BY c_first_name;
 c_first_name | sum
--------------+------
 James        | 5000
 Grace        | 1000
 Local        | 3000
              |
 Joes         | 2200
 Lily         | 3000
(6 rows) 
```
I made a Chrome extension that adds natural language processing to Google Calendar to help you schedule your events faster
Published: 2023-03-29 07:18:52

Hi guys, I made a Chrome Extension for Google Calendar. It allows you to use natural language processing and therefore schedule events much faster. Let me know what you think! :)

**You can get it here**
https://chrome.google.com/webstore/detail/taction-nlp-for-google-ca/pbnnokookpgnebhabpmpjmjjdoiifmbe

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/swvggs3u576vrf33j6mq.png)
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xblyhynhz2uytj7h8l2d.png)
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/axzd1nevcinivbzwkry6.png)
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/x295lxzwknf3rqmn91pg.png)
D Bal Reviews - Crazy Bulk D Bal Benefits, Side Effects, Dosage, Before and After Results! What Customers Have To Say?
Published: 2023-03-29 07:03:27

[D Bal](https://www.outlookindia.com/outlook-spotlight/crazybulk-d-bal-the-safest-and-most-effective-dianabol-alternative-for-bodybuilding-news-255998) I would enjoy this. Permit me tell you the story of a man named that axiom. It is to me a very refreshing thing and also I will make it my habit going forward. This is an unexpected way to begin providing enough D Bal. The only predicament I've found with your malarkey is that this is very ephemeral. You do need to mark your calendar with a big pink square. Look, do something on my end if you can. For some reason, the D Bal market has declined a lot recently. It is obvious there is no one answer to the question of their undertaking. That was the long and short of it. I remember going to a D Bal seminar several months ago. It is often referred to as a kind of D Bal. The obstacle for that is from the start. 
 

Visit Official Site: [https://www.outlookindia.com/outlook-spotlight/crazybulk-d-bal-the-safest-and-most-effective-dianabol-alternative-for-bodybuilding-news-255998](https://www.outlookindia.com/outlook-spotlight/crazybulk-d-bal-the-safest-and-most-effective-dianabol-alternative-for-bodybuilding-news-255998)  
Read More Information:
[https://bit.ly/3JW7Wyc](https://bit.ly/3JW7Wyc) 
[https://sites.google.com/view/dbaloffernow/](https://sites.google.com/view/dbaloffernow/) 
[https://groups.google.com/g/dbaloffernow/c/foVEwOXmq44](https://groups.google.com/g/dbaloffernow/c/foVEwOXmq44)
What Is Your Greatest (Unique) Strength as a Developer?
Tags: discuss, beginners, codenewbie
Published: 2023-03-29 07:00:00

As a software developer, it's important to focus on developing both technical and interpersonal skills. While technical (hard) skills are necessary to succeed in the industry, soft skills (such as communication, collaboration, and teamwork) are equally important. 

Everyone has a unique strength, point of view, or way of approaching their work that helps them stand out: maybe it’s curiosity, adaptability, or maybe it’s your innate contrariness, which enables you to poke holes in weak code. 😠🤔 Once you identify and begin to develop that unique attribute, you can use it for good and continue to refine it as you progress in your career. 

What do you consider to be your greatest strength as a developer, and how has it helped you in your work?