/*mysql> select FLOOR(12.345);+---------------+| FLOOR(12.345) |+---------------+| 12 |+---------------+1 row in set (0.00 sec)mysql> select FLOOR(-12.3456);+-----------------+| FLOOR(-12.3456) |+-----------------+| -13 |+-----------------+1 row in set (0.00 sec)*/ select FLOOR(12.345);select FLOOR(-12.3456);
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