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Oracle two associated tables perform updates update

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UPDATET_ASN_DTL AD1SETAd1.cf03=(    SELECTAc. TH003 from"T_asn_dtl_copy" ACWHEREAc.udf06=Ad1. Inspecter_name andAc.udf05=Ad1. LINE_ITEM_NO)WHERE EXISTS(SELECT 1  from"T_asn_dtl_copy" acWHEREAc.udf06=Ad1. Inspecter_name andAc.udf05=Ad1. LINE_ITEM_NO)UPDATETable 2SETTable 2. C=     (SELECTB fromTable 1WHERETable 1. A=table 2. A)WHERE EXISTS     (SELECT 1        fromTable 1WHERETable 1. A=table 2.      A);

Oracle two associated tables perform updates update

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