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[单选] WM_ASN_HEADER表和WM_ASN_DETAIL表都带有ORG_ID和PROJECT_ID字段,两表关联时做法正确的是()
A.WM_ASN_HEADER WAH JOIN WM_ASN_DETAIL WAD ON WAD.ASN_NO=WAH.ASN_NO AND WAD.PROJECT_ID=WAH.PROJECT_ID B.WM_ASN_HEADER WAH JOIN WM_ASN_DETAIL WAD ON WAD.ASN_NO=WAH.ASN_NO AND WAD.PROJECT_ID=WAH.PROJECT_ID AND WAD.ORG_ID=WAH.ORG_ID C.WM_ASN_HEADER WAH JOIN WM_ASN_DETAIL WAD ON WAD.ASN_NO=WAH.ASN_NO AND WAD.ORG_ID=WAH.ORG_ID D.WM_ASN_HEADER WAH JOIN WM_ASN_DETAIL WAD ON WAD.ASN_NO=WAH.ASN_NO
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