535   ExprList *pEList,    /* The SET clause: list of column and new values */  in sqlite3TriggerUpdateStep()  argument
547       pTriggerStep->pExprList = pEList;  in sqlite3TriggerUpdateStep()
550       pEList = 0;  in sqlite3TriggerUpdateStep()
554       pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE);  in sqlite3TriggerUpdateStep()
560   sqlite3ExprListDelete(db, pEList);  in sqlite3TriggerUpdateStep()
738 static int checkColumnOverlap(IdList *pIdList, ExprList *pEList){  in checkColumnOverlap()  argument
740   if( pIdList==0 || NEVER(pEList==0) ) return 1;  in checkColumnOverlap()
741   for(e=0; e<pEList->nExpr; e++){  in checkColumnOverlap()
742     if( sqlite3IdListIndex(pIdList, pEList->a[e].zEName)>=0 ) return 1;  in checkColumnOverlap()
974   sSelect.pEList = sqlite3ExprListDup(db, pReturning->pReturnEL, 0);  in codeReturningTrigger()
984   sqlite3ExprListDelete(db, sSelect.pEList);  in codeReturningTrigger()