/* 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);
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