FIND_IN_SET()

Description

This function FIND_IN_SET() returns a value in the range of 1 to N if the string str is in the string list strlist consisting of N substrings. A string list is a string composed of substrings separated by , characters. If the first argument is a constant string and the second is a column of type SET, the FIND_IN_SET() function is optimized to use bit arithmetic. Returns 0 if str is not in strlist or if strlist is the empty string. Returns NULL if either argument is NULL. This function does not work properly if the first argument contains a comma (,) character.

Syntax

> FIND_IN_SET(str,strlist)

Arguments

Examples

select find_in_set('b','a,b,c,d');
+-------------------------+
| find_in_set(b, a,b,c,d) |
+-------------------------+
|                       2 |
+-------------------------+