查看實例上面無主鍵的表

select t1.table_schema,t1.table_name from information_schema.tables t1 left outer join information_schema.TABLE_CONSTRAINTS t2   

on t1.table_schema = t2.TABLE_SCHEMA  and t1.table_name = t2.TABLE_NAME  and t2.CONSTRAINT_NAME in( 'PRIMARY') 

where t2.table_name is  null   and t1.TABLE_SCHEMA not in ('information_schema','performance_schema','test','mysql')and 
t1.table_schema not like '%0%' and t1.table_name like '%0%';