MySQL Tutorial/Date Time Functions/PERIOD ADD
PERIOD_ADD(P,N) adds N months to period P (in the format YYMM or YYYYMM).
Returns a value in the format YYYYMM.
The period argument P is not a date value.
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mysql> mysql> SELECT PERIOD_ADD(9803,2); +--------------------+ | PERIOD_ADD(9803,2) | +--------------------+ | 199805 | +--------------------+ 1 row in set (0.00 sec) mysql> mysql></source>