Substract string index
/* mysql> select substring_index('1,2,3,4,5,6,7,8,9',",",2); +--------------------------------------------+ | substring_index('1,2,3,4,5,6,7,8,9',",",2) | +--------------------------------------------+ | 1,2 | +--------------------------------------------+ 1 row in set (0.01 sec) */ select substring_index('1,2,3,4,5,6,7,8,9',",",2);
1. | Extracting Parts of Character Strings |