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SQL: select * into b from a where 1<>1;
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SQL: insert into b(a, b, c) select d, e, f from b;
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SQL: SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE
     from TABLE1,(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE
                  from (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND
                        from TABLE2
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