想要实现mysql>drop table like "prefix_%"
没有直接可用的命令,不过可以通过mysql语法来组装,
SELECT CONCAT( 'DROP TABLE ', GROUP_CONCAT(table_name) , ';' ) AS statement FROM information_schema.tables WHERE table_schema = 'database_name' AND table_name LIKE 'myprefix_%';
然后执行该组装后的命令,比如从slowquery表中删除掉所有tmp_开头的表:
SELECT CONCAT( 'DROP TABLE ', GROUP_CONCAT(table_name) , ';' ) AS statement FROM information_schema.tables WHERE table_schema = 'slowquery' AND table_name LIKE 'tmp_%';
输出结果:
drop table tmp_201301,tmp_201302,tmp_201351,tmp_201352;
我自己现实中的例子:
/*自动生成删除动态表SQL语句用法:拷贝到查询分析器中执行,把结果拷贝出来再执行就OK了。*/SELECT REPLACE(GROUP_CONCAT(a.dropSql),',','') AS dropSqlFROM(SELECT CONCAT( 'drop table ', table_name, ';' ) AS dropSqlFROM information_schema.tables WHERE table_name LIKE 'slavetablemgr%'UNIONSELECT CONCAT( 'drop table ', table_name, ';' ) AS dropSqlFROM information_schema.tables WHERE table_name LIKE 'DevicePlugin_%'UNIONSELECT CONCAT( 'drop table ', table_name, ';' ) AS dropSqlFROM information_schema.tables WHERE table_name LIKE 'historyrecordhour%'UNIONSELECT CONCAT( 'drop table ', table_name, ';' ) AS dropSqlFROM information_schema.tables WHERE table_name LIKE 'historyrecordminute%'UNIONSELECT CONCAT( 'drop table ', table_name, ';' ) AS dropSqlFROM information_schema.tables WHERE table_name LIKE 'historyrecordsecond%') a;