你去掉Distinct看看正常否:
select a.planid as'计划组号', a.requiredate as'排产日期',f.date_paying as'交货期',c.deptcode as'部门编码',d.name as'部门名称',a.requiresumcontractno as'订单编号',a.id_contract as'合同编号',a.itemcode as'产品编码',b.name as'产品名称',b.unit as'单位',b.classcode as'分类编码',e.classname as'分类名称',a.plannum as'计划数量',a.finishnum as'完成数量',a.color as'颜色',a.remark as'商标',f.price_taxfree*g.rate_exchange as '单价' from aec00000 a,aaa00000 b,abb00000 c,zad00000 d,aam00000 e,eba00000 g,ebf00000 f where a.itemcode=b.code and a.centercode='0100' and c.itemcode=a.itemcode and c.deptcode=d.code and b.classcode=e.classcode and a.plannum<>a.finishnum and a.requiredate>getdate()-30 and g.id_contract=f.id_contract and a.id_contract=f.id_contract and f.id_product= a.itemcode and g.sellunit<>'0702' order by a.requiredate,c.deptcode,a.itemcode
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