PostgreSQL STRPOS() Function

The PostgreSQL STRPOS() function returns the location of the first occurrence of a specified substring in a given string. If the substring is not found within the given string, this function returns 0.

This function performs a case-sensitive search. Note that the first position in string starts with 1.

Syntax

STRPOS(string, substring)

Parameters

Return Value

Returns the location of the first occurrence of the substring in the string.

Example 1:

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

SELECT STRPOS('AlphaCodingSkills.com', 'A');
Result: 1

SELECT STRPOS('AlphaCodingSkills.com', 'Coding');
Result: 6

SELECT STRPOS('AlphaCodingSkills.com', '.com');
Result: 18

SELECT STRPOS('AlphaCodingSkills.com', 'Z');
Result: 0

SELECT STRPOS('AlphaCodingSkills.com', 'ABC');
Result: 0

Example 2:

Consider a database table called Employee with the following records:

In the query below, the STRPOS() function is used to extract the country code from the PhoneNumber column records.

SELECT *, 
SUBSTR(PhoneNumber, 1, STRPOS(PhoneNumber, '-') - 1) AS CountryCode 
FROM Employee;

This will produce the result as shown below: