PostgreSQL RTRIM() Function

The PostgreSQL RTRIM() function removes all specified characters from the right-hand side of a string.

Syntax

RTRIM(string, trim_character)

Parameters

Return Value

Returns the trimmed version of the specified string.

Example 1:

The example below shows the usage of RTRIM() function.

SELECT RTRIM('SQL Tutorial    ');
Result: 'SQL Tutorial'

SELECT RTRIM('  SQL Tutorial    ');
Result: '  SQL Tutorial'

SELECT RTRIM('Learning  SQL  is  fun.    ');
Result: 'Learning  SQL  is  fun.'

SELECT RTRIM('  Learning  SQL  is  fun.    ');
Result: '  Learning  SQL  is  fun.'

SELECT RTRIM('TRIMxxzy', 'xyz');
Result: 'TRIM'

Example 2:

Consider a database table called Employee. When the following INSERT statements are executed, the Name column will contain records with trailing spaces.

INSERT INTO Employee VALUES ('John        ', 'London', 3000);
INSERT INTO Employee VALUES ('Marry        ', 'New York', 2750);
INSERT INTO Employee VALUES ('Jo      ', 'Paris', 2800);
INSERT INTO Employee VALUES ('Kim      ', 'Amsterdam', 3100);

-- see the result
SELECT * FROM Employee;

The query will produce the following result:

To remove the trailing spaces from the Name column of the Employee table, the following query can be used:

UPDATE Employee SET Name = RTRIM(Name);

-- see the result
SELECT * FROM Employee;

This will produce the following result: