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数据库多表查询问题,请看图
1、select a.xh,a.xm,a.xb,b.bjmc from xsb a,bjb b where a.id=b.bjb_id2、select b.xh,b.xm,b.xb,a.bjmc,c.yw,c.sx from bjb a,x
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数据库多表查询问题,请看图
1、select a.xh,a.xm,a.xb,b.bjmc from xsb a,bjb b where a.id=b.bjb_id2、select b.xh,b.xm,b.xb,a.bjmc,c.yw,c.sx from bjb a,x