CREATE INDEX PIPURINV_COMPSUPINVNO_IN ON oa_jk_purinv.pi_pur_invoice_hdr ( comp_code,sup_code,purinv_no)
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ALTER TABLE oa_jk_purinv.pi_pur_invoice_hdr
ADD CONSTRAINT PIPURINV_COMPSUPINVNO_UK UNIQUE ( comp_code,sup_code,purinv_no) ENABLE NOVALIDATE
CREATE TABLE regions ( region_id NUMBER CONSTRAINT region_id_nn NOT NULL , region_name VARCHAR2(25) ); ...
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