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RAND()

RAND() 用于返回一个随机浮点值,范围在 0 ~ 1 之间

mysql> SELECT RAND(), RAND(), RAND();+--------------------+--------------------+---------------------+| RAND()             | RAND()             | RAND()              |+--------------------+--------------------+---------------------+| 0.7393965169222994 | 0.5185907432051289 | 0.37476419599239175 |+--------------------+--------------------+---------------------+

 

 

 

 

   

RAND()