Languages
[Edit]
EN

PostgreSQL - Comments

0 points
Created by:
Kelly
394

In this article, we would like to show you how to use comments in PostgreSQL.

Quick solution:

-- Single-line comment
/* 
  Multi-line
  comment
*/

Practical examples

Example 1

In this example, we use a single-line comment as a code fragment explanation:

-- Select all users
SELECT * FROM "users";

Example 2

In this we use a single-line comment to ignore a statement at the end of the line:

SELECT * FROM "users" -- WHERE "name"='Tom';

Example 3

In this example we use a multi-line comment as a code fragment explanation:

/* Select all
 from the "users" table: */
SELECT * FROM "users";

Example 4

In this example, we use a multi-line comment to ignore many statements:

/*SELECT * FROM "users";
SELECT * FROM "products";
SELECT * FROM "orders";*/
SELECT * FROM "departments";

Example 5

In this example, we use a multi-line comment to ignore part of a line:

SELECT "name", /*"surname"*/ "country" FROM "users";
Donate to Dirask
Our content is created by volunteers - like Wikipedia. If you think, the things we do are good, donate us. Thanks!
Join to our subscribers to be up to date with content, news and offers.

PostgreSQL

Native Advertising
🚀
Get your tech brand or product in front of software developers.
For more information Contact us
Dirask - we help you to
solve coding problems.
Ask question.

❤️💻 🙂

Join