PostgreSQL CHR: Get Character Based on ASCII or Unicode Code Point

PostgreSQL CHR() Function

The PostgreSQL CHR() function converts an integer ASCII code to a character or a Unicode code point to a UTF8 character.

Syntax

The following shows the syntax of the CHR() function:

CHR(num)

The CHR() function requires one argument:

1) num

The num argument is an integer that is converted to the corresponding ASCII code.

It could be a Unicode code point which is converted to a UTF8 character.

The CHR() function returns a character that corresponds the the ASCII code value or Unicode code point.

The following example shows how to use the CHR() function to get the characters whose ASCII code value is 65 and 97:

SELECT
    CHR(65),
    CHR(97);

The query returns character A for 65 and a for 97:

PostgreSQL CHR - ASCII example Here is an example of getting the UTF8 character based on the Unicode code point 937:

SELECT
    CHR(937);

The output for the Unicode code point 937 is Ω, which is what we expected.

PostgreSQL CHR - Unicode example

To get the ASCII code or UTF-8 character of an integer, you use the ASCII() function.

In this tutorial, you have learned how to use the PostgreSQL CHR() function to get the character based on its ASCII value or Unicode code point.