(3) DELE FROM 订购单WERE职工号IN (SELE职工号FROM职工,仓库; WRE仓库.城市=”上海 AND仓库.仓库号=职工.仓库号) (4) UPDATE仓库SET面积=面积+100 WHERE城市=”北京 (5) UPDATE职工SET工资=工资*1.1 WHERE工资<( SELE AVG(工资)FROM职工(3) DELE FROM 订购单 WHERE 职工号 IN; (SELE 职工号 FROM 职工,仓库; WHERE 仓库.城市="上海"; AND 仓库.仓库号=职工.仓库号) (4) UPDATE 仓库 SET 面积=面积+100 WHERE 城市="北京" (5) UPDATE 职工 SET 工资=工资*1.1 WHERE 工资<(SELE AVG(工资) FROM 职工)