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PostgreSQL - sort in ascending or descending order

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Created by:
Dirask Admin - Marwin
1430

In this article, we would like to show you how to sort records in ascending and descending order in PostgreSQL.

Quick solution:

SELECT "column1", "column2", "columnN"
FROM "table_name"
ORDER BY "column1", "column2", "columnN" ASC;
SELECT "column1", "column2", "columnN"
FROM "table_name"
ORDER BY "column1", "column2", "columnN" DESC;

Practical example

To show how to sort records in ascending and descending order, we will use the following table:

PostgreSQL - example data used to sort records in ascending / descending order
PostgreSQL - example data used to sort records in ascending / descending order
 

Note:

At the end of this article you can find database preparation SQL queries.

Example 1

In this example, we will display information about the users in ascending salary order.

Query:

SELECT "name", "surname", "salary"
FROM "users"
ORDER BY "salary" ASC;

Result:

PostgreSQL - GROUP BY column_name in ascending order - result
PostgreSQL - GROUP BY column_name in ascending order

Example 2

In this example, we will display information about the users in descending salary order.

Query:

SELECT "name", "surname", "salary"
FROM "users"
ORDER BY "salary" DESC;

Result:

PostgreSQL - GROUP BY column_name in descending order - result
PostgreSQL - GROUP BY column_name in descending order - result

Database preparation

create_tables.sql file:

CREATE TABLE "users" (
    "id" SERIAL,
    "name" VARCHAR(50) NOT NULL,
    "surname" VARCHAR(50) NOT NULL,
    "department_id" INTEGER,
    "salary" DECIMAL(15,2) NOT NULL,
    PRIMARY KEY ("id")
);

insert_data.sql file:

INSERT INTO "users"
    ( "name", "surname", "department_id", "salary")
VALUES
    ('John', 'Stewart', 1, '3512.00'),
    ('Chris', 'Brown', 2, '1344.00'),
    ('Kate', 'Lewis', 3, '6574.00'),
    ('Ailisa', 'Gomez', NULL, '6500.00'),
    ('Gwendolyn', 'James', 2, '4200.00'),
    ('Simon', 'Collins', 4, '3320.00'),
    ('Taylor', 'Martin', 2, '1500.00'),
    ('Andrew', 'Thompson', NULL, '2100.00');

PostgreSQL - problems

PostgreSQL - sort in ascending or descending order
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