View provides a list of Prior operations for a specific operation in a work order depends upon the Dependency Definition defined in WIP_OPERATION_NETWORKS
SELECT WO.OPERATION_SEQ_NUM , WO.DESCRIPTION , BD.DEPARTMENT_CODE , LKP.MEANING , WO.FIRST_UNIT_START_DATE , WO.LAST_UNIT_COMPLETION_DATE , ROUND((WO.LAST_UNIT_COMPLETION_DATE-WO.FIRST_UNIT_START_DATE)*24) , DECODE(UPPER(WO.OPERATION_COMPLETED) , 'Y' , EOCT.ACTUAL_START_DATE , NULL) , DECODE(UPPER(WO.OPERATION_COMPLETED) , 'Y' , EOCT.ACTUAL_END_DATE , NULL) , WON.WIP_ENTITY_ID , WON.NEXT_OPERATION FROM WIP_OPERATIONS WO , EAM_OP_COMPLETION_TXNS EOCT , WIP_OPERATION_NETWORKS WON , BOM_DEPARTMENTS BD , FND_LOOKUP_VALUES LKP WHERE (WO.WIP_ENTITY_ID=WON.WIP_ENTITY_ID AND WON.WIP_ENTITY_ID=EOCT.WIP_ENTITY_ID(+)) AND (WO.OPERATION_SEQ_NUM=WON.PRIOR_OPERATION AND WON.PRIOR_OPERATION=EOCT.OPERATION_SEQ_NUM(+)) AND BD.DEPARTMENT_ID=WO.DEPARTMENT_ID AND NVL(EOCT.TRANSACTION_ID , 0)=(SELECT NVL(MAX(TRANSACTION_ID) , 0) FROM EAM_OP_COMPLETION_TXNS WHERE WIP_ENTITY_ID=WON.WIP_ENTITY_ID AND OPERATION_SEQ_NUM=WON.PRIOR_OPERATION) AND LKP.LANGUAGE=USERENV('LANG') AND LKP.LOOKUP_TYPE='EAM_YES_NO' AND LKP.LOOKUP_CODE=NVL(WO.OPERATION_COMPLETED , 'N')