如何解决SQL Selects组合-第二个选择位于Where子句
我有2个选择。第一个:
select purs.t_orno as purchased
from ttisfc001201 sls
inner join twhinr110201 sfc on sfc.t_orno = sls.t_pdno
inner join twhltc100201 purs on purs.t_clot=sfc.t_clot
left join twhltc220201 items on items.t_clot = sfc.t_clot
left join twhltc210201 cert_num on cert_num.t_item = items.t_item
left join twhltc200201 cert on cert.t_ltft = cert_num.t_ltft
where sls.t_cprj = 'SLS004336' and purs.t_orno like N'PUR%'
and sfc.t_koor = 1 and sfc.t_kost = 5
正在给我这些结果:
PUR007833
PUR008544
PUR008698
PUR008963
PUR009048
PUR009304
PUR009611
PUR009912
PUR009913
PUR010006
PUR010110
PUR010400
PUR010465
PUR010539
PUR010664
所以基本上这些是我必须在where子句的第二个select中使用的结果。第二个选择中来自表的字段必须等于其中之一。为了更好地了解我,它应该看起来像这样:
select distinct fac.t_isup
from ttfacp200201 fac
inner join ttfacp250201 mid on mid.t_ityp = fac.t_ttyp and mid.t_idoc=fac.t_ninv
where mid.t_orno ='PUR010400' or mid.t_orno='PUR009912'or mid.t_orno='PUR009913'or mid.t_orno='PUR010465'or mid.t_orno='PUR008544'or mid.t_orno='PUR008963'or mid.t_orno='PUR009048'or mid.t_orno='PUR010110'or mid.t_orno='PUR007833'or mid.t_orno='PUR009304'or mid.t_orno='PUR009611'or mid.t_orno='PUR010664'or mid.t_orno='PUR010006'or mid.t_orno='PUR010539'or mid.t_orno='PUR008698'or mid.t_orno='PUR010667'
所有这些OR均为首次选择的结果。如何合并它们(第一个选择进入第二个选择where子句),以便我可以一次获得结果?
解决方法
您可以在第二个查询中使用IN
子句
select distinct fac.t_isup
from ttfacp200201 fac
inner join ttfacp250201 mid on mid.t_ityp = fac.t_ttyp and mid.t_idoc=fac.t_ninv
where mid.t_orno IN (
select purs.t_orno
from ttisfc001201 sls
inner join twhinr110201 sfc on sfc.t_orno = sls.t_pdno
inner join twhltc100201 purs on purs.t_clot=sfc.t_clot
left join twhltc220201 items on items.t_clot = sfc.t_clot
left join twhltc210201 cert_num on cert_num.t_item = items.t_item
left join twhltc200201 cert on cert.t_ltft = cert_num.t_ltft
where sls.t_cprj = 'SLS004336' and purs.t_orno like N'PUR%'
and sfc.t_koor = 1 and sfc.t_kost = 5
)
,
类似这样的东西
;with first_query_cte(purchased) as (
select purs.t_orno
from ttisfc001201 sls
inner join twhinr110201 sfc on sfc.t_orno = sls.t_pdno
inner join twhltc100201 purs on purs.t_clot=sfc.t_clot
left join twhltc220201 items on items.t_clot = sfc.t_clot
left join twhltc210201 cert_num on cert_num.t_item = items.t_item
left join twhltc200201 cert on cert.t_ltft = cert_num.t_ltft
where sls.t_cprj = 'SLS004336' and purs.t_orno like N'PUR%'
and sfc.t_koor = 1 and sfc.t_kost = 5)
select distinct fac.t_isup
from ttfacp200201 fac
inner join ttfacp250201 mid on mid.t_ityp = fac.t_ttyp and mid.t_idoc=fac.t_ninv
inner join first_query_cte fqc on mid.t_orno=fqc.purchased;
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