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SELECT COUNT(1)
INTO OR_NUM
FROM BOM.BOM_OPERATIONAL_ROUTINGS BOR, BOM.BOM_OPERATION_SEQUENCES BOS
WHERE BOR.ASSEMBLY_ITEM_ID = 65634
AND BOR.ALTERNATE_ROUTING_DESIGNATOR IS NULL
AND BOR.ROUTING_SEQUENCE_ID = BOS.ROUTING_SEQUENCE_ID
AND BOS.DISABLE_DATE IS NULL
觉着你可以把外面的那层查询拿掉 select count(tb.*) into or_num from (
select * from BOM.BOM_OPERATIONAL_ROUTINGS BOR
,BOM.BOM_OPERATION_SEQUENCES BOS where bor.assembly_item_id=65634
and bor.alternate_routing_designator is null
and bor.routing_sequence_id=bos.routing_sequence_id
AND BOS.DISABLE_DATE IS NULL
) tb ;
加个别名试试看看