ERROR 1104 (42000): The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay

最近做個大表查詢報錯如下：ERROR 1104 (42000): The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay
大表280萬行。提示描述的很清楚。
我查詢show variables like '%MAX_JOIN_SIZE%'，是100萬。
按照提示修改后，可以查詢。