select sum(data_length+index_length+data_free)/1024/1024/1024,table_rows,table_name from information_schema.tables group by table_name having sum(data_length+index_length+data_free)/1024/1024/1024 >15
记录数大于1kw的表:
select TABLE_ROWS,table_name from information_schema.tables where table_rows>10000000;