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LPAD(str,len,padstr)

If str is longer than len, the return value is shortened to len characters. mysql> mysql> SELECT LPAD('ABC',4,'??'); +--------------------+ | LPAD('ABC',4,'??') | +--------------------+ | ?ABC               | +--------------------+ 1 row in set (0.00 sec) mysql> mysql> SELECT LPAD('ABC',1,'??'); +--------------------+ | LPAD('ABC',1,'??') | +--------------------+ | A                  | +--------------------+ 1 row in set (0.00 sec) mysql>