但现在我们需要将它们放在一个查询中,该查询当然会附带'time‘、'warehouse_id’等查询条件,结果也需要进行排序。解决方案是将这两个表合并,然后排序,查询如下所示: select * from
(select ... from warehouse_in left join ... where ...select ... from warehouse_out left join ... where ...) as tmp order by 'sto
在我的表中,有一个timestamp命令的条目。我想返回一个具有最高timestamp的条目。SELECT max(`timestamp`) FROM `messages`SELECT max(`timestamp`), `message` FROM `messages`In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'data
我把这些放在SQLFiddle上,它按预期工作,但在大学的MySQL引擎上,它的工作方式不同:id, word, category2,例如:蓝色,帽子,岩石,红色,砖块,手套,杯子,披风(颜色,项目,项目,颜色,项目,项目)SELECT * FROM (SELECT * FROM word WHERE id I