LOCATE

Purpose

This function returns the position in string at which search_string appears. If this is not contained, the value 0 is returned.

Usage Notes

• The optional parameter position defines the search direction and at which position the search shall start:

  • If position is positive, the string is searched from the beginning to the end, starting at the character position counted from the beginning (the first character has position 1).

  • If position is negative, the string is searched from the end to the beginning, starting at character position counted from the end (the last character has position -1). The return value is counted from the beginning to the end, so the function will never return a negative value.

    Example: LOCATE(string,'abc',-3) will search backwards starting from the third last character in the string.

• LOCATE(string,search_string) is similar to LOCATE(string,search_string,1).

• The functions POSITION and LOCATE are similar.

Example

SELECT LOCATE('cab','abcabcabc') LOCATE1,
       LOCATE('user','user1,user2,user3,user4,user5', -1) LOCATE2;

Result