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PostgreSQL - select last N rows
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In this article, we would like to show you how to select last N rows from a table in PostgreSQL.
Ascending order:
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SELECT * FROM (2
SELECT * FROM "table_name" 3
ORDER BY "column_name" DESC4
LIMIT N5
) subquery6
ORDER BY "column_name" ASC;Descending order:
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SELECT * FROM "table_name" 2
ORDER BY "column_name" DESC 3
LIMIT N;To show how to select last N rows from a table, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will select last three users from the users table in ascending order.
Query:
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SELECT * FROM (2
SELECT * FROM "users" 3
ORDER BY "id" DESC4
LIMIT 35
) subquery6
ORDER BY "id" ASC;Output:
In this example, we will select last three users from the users table in descending order.
Query:
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SELECT * FROM "users" ORDER BY "id" DESC LIMIT 3;Output:
create_tables.sql file:
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CREATE TABLE "users" (2
"id" SERIAL PRIMARY KEY,3
"name" VARCHAR(100) NOT NULL,4
"country" VARCHAR(15) NOT NULL5
);insert_data.sql file:
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INSERT INTO "users"2
("name", "country")3
VALUES4
('Tom', 'Poland'),5
('Chris', 'Spain'),6
('Jack', 'Spain'),7
('Kim', 'Vietnam'),8
('Marco', 'Italy'),9
('Kate', 'Spain'),10
('Nam', 'Vietnam');