ALTER TABLE PERIOD ADD CONSTRAINT PERIOD_X PRIMARY KEY (CODE)
   
ALTER TABLE GST_AUTH_INFO ADD CONSTRAINT GST_AUTH_INFO_X PRIMARY KEY (GSTIN_NO)
   
ALTER TABLE USERTYPE_LIC_CHRGS ADD CONSTRAINT USERTYPE_LIC_CHRGS_PK PRIMARY KEY (USER_LIC_TYPE)
   
ALTER TABLE WO_OBSRV_DET ADD CONSTRAINT WO_OBSRV_DET_X PRIMARY KEY (TRAN_ID, LINE_NO)
   
ALTER TABLE TRANSPORTER_BILL_CHGS ADD CONSTRAINT TRANSPORTER_BILL_CHGS_X PRIMARY KEY (TRAN_ID, LINE_NO)
   

-- No of Rows = 5
