WITH AS 與增刪改查結合用法

注意：1. with必須緊跟引用的select語句

2.with建立的臨時表必須被引用，否則報錯

4.1與select查詢語句結合使用

查詢同乙個單據編號對應的借款單和核銷單中，借款金額不相等的單據

with verificationinfo as

(select ment.fnumber,
sum(t.famount) vloansum,
ment.fnumber "單據編號",
sum(t.famount) "核銷單中借款總額"
from shenzhenjm.t_finance_expenseremburseitem t
left join shenzhenjm.t_finance_expenserembursement ment
on ment.fid = t.fkrembursementid
where 1 = 1
group by ment.fnumber),
loaninfo as
(select ment.fnumber,
sum(t.famount) loansum,
ment.fnumber "單據編號",
sum(t.famount) "借款單中借款總額"
from shenzhenjm.t_finance_expenseremburseitem2 t
left join shenzhenjm.t_finance_expenserembursement ment
on ment.fid = t.fkrembursementid
where 1 = 1
group by ment.fnumber)
select *
from verificationinfo v, loaninfo l
where l.fnumber = v.fnumber
and l.loansum != v.vloansum;

如下的with as語句，不能放在insert前，而是放在緊接著要呼叫的地方前

要求將同乙個單據編號對應的借款單和核銷單中，借款金額不相等的單據，對應的借款單刪除，並將對應的核銷單插入到借款單表中 （借款單和核銷單表結構完全一樣）

(fid,

fkrembursementid,

famount,

fkcreatebyid,

fcreatetime,

fkcuid,

fkcosttypeid,

fcosttypename)

with verificationinfo as

(select ment.fnumber,

sum(t.famount) vloansum,

ment.fnumber "單據編號",

sum(t.famount) "核銷單中借款總額"

from shenzhenjm.t_finance_expenseremburseitem t

left join shenzhenjm.t_finance_expenserembursement ment

on ment.fid = t.fkrembursementid

where 1 = 1

group by ment.fnumber),

loaninfo as

(select ment.fnumber,

sum(t.famount) loansum,

ment.fnumber "單據編號",

sum(t.famount) "借款單中借款總額"

from shenzhenjm.t_finance_expenseremburseitem2 t

left join shenzhenjm.t_finance_expenserembursement ment

on ment.fid = t.fkrembursementid

where 1 = 1

group by ment.fnumber)

select sys_guid(),

ment.fid,

t.famount,

ment.fkcreatebyid,

ment.fcreatetime,

ment.fkcuid,

t.fkcosttypeid,

t.fcosttypename

from t_finance_expenseremburseitem t

left join t_finance_expenserembursement ment

on ment.fid = t.fkrembursementid

where 1 = 1

and exists (select *

from verificationinfo v, loaninfo l

where l.fnumber = v.fnumber

and l.loansum != v.vloansum

and v.fnumber = ment.fnumber);

4.3 與delete刪除結合使用

delete from t_finance_expenseremburseitem2 item2

where exists(with temp as (select t.fnumber,
sum(item1.famount) vloansum,
sum(item1.frealityamount) vsum,
sum(item2.famount) loansum
from t_finance_expenserembursement t
left join t_finance_expenseremburseitem item1
on item1.fkrembursementid = t.fid
left join t_finance_expenseremburseitem2 item2
on item2.fkrembursementid = t.fid
where 1 = 1
and t.frembursementtype = 'loan_report'
and to_char(t.fcreatetime, 'yyyy') > '2017'
group by t.fnumber
order by t.fnumber asc)
select 1
from temp t
left join t_finance_expenserembursement ment
on t.fnumber = ment.fnumber
left join t_finance_expenseremburseitem2 item
on item.fkrembursementid = ment.fid
where t.vloansum != t.loansum
and item.fid = item2.fid);

update dest b

set b.name =
(with t as (select * from temp)
select a.name from temp a where a.id = b.id)

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