UPDATE trd_sess A SET A.rec_updt_la_dt_tm = SYSDATE, A.trd_sess_end_tm = (SELECT B.trd_sess_end_tm FROM trd_sess B WHERE B.prod_type = 'LEQU' AND B.wkdy_tdy_cde = A.wkdy_tdy_cde AND B.trd_sess_cde = A.trd_sess_cde AND B.trd_sb_sess_cde = A.trd_sb_sess_cde AND B.grp_prod_type_prim_cde = A.grp_prod_type_prim_cde) WHERE A.prod_type = 'ZZZZ' AND A.wkdy_tdy_cde IN ( 1, 2, 3, 4, 5 ) AND A.trd_sess_cde = 'AFTMTH' AND A.trd_sb_sess_cde = 'SESS01' AND A.grp_prod_type_prim_cde = 'L';
Update两表(多表)关联update -- 被修改值由另一个表运算而来
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转载自buralin.iteye.com/blog/2332272
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