sqlite老是报错no 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
报错 no such column: qproducts.pmodel
请问这是怎么回事,要如何解决?