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sqliteÀÏÊDZ¨´íno such column

SELECT qsmallClass.Sname, qproducts.pmodel, qproducts.punit, qmaintain.mcount from qsmallClass INNER JOIN (qproducts INNER JOIN qmaintain ON qproducts.pid = qmaintain.pid) ON qsmallClass.Sid = qproducts.Sid

±¨´í  no such column: qproducts.pmodel

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qproducts.±íÖÐÓÐÕâÒ»ÁÐpmodelÂð£¿

.schema qproducts

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create table qmaintain(mid integer primary key,mvid,pid,mcount);
create table qsmallclass(sid integer primary key,sname,bid);
create table qproducts(pid integer primary key,sid,pmodel,pbrand,punit,pmoney,pcount,pmaintains,preturns,pdesc);


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