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[英]insert 1 row into another table and the update the original row. for multiple rows
[英]Insert multiple rows for each row in another table
我正在尋找一個 SQL 查詢,它為表 A 中的每一行將多行數據插入表 B
表 A
ID BillNo TAX Amount TotalAmount
-------------------------------------------------------
1 001 5 100 105
2 002 20 400 420
我需要像這種格式一樣將數據插入表B
表 B
ID Type Billno Amount
-----------------------------------
1 Sales 001 100
2 Cash 001 105
3 Tax 001 5
4 sales 002 400
5 Cash 002 420
6 Tax 002 20
我試過這個
insert into tableB
select 'Sales', billno, Amount
from TableA
insert into tableB
select 'Cash', billno, TotalAmount
from TableA
insert into tableB
select 'Tax', billno, tax
from TableA
但它首先插入所有“銷售”行,然后是“現金”,然后是“稅”。 我沒有把它放在一組中。 像這樣:
1 Sales 001 100
2 sales 002 400
3 Cash 001 105
4 Cash 002 420
5 Tax 001 5
6 Tax 002 20
請幫我解決。
你能測試一下這個 sql:
INSERT INTO `tableB` (`Type`, `Billno`, `Amount`)
SELECT 'Sales', `billno`, `Amount`
FROM `TableA`
你是什么意思“得到它在一個集合”? 您想按順序插入嗎? 然后你可以做這樣的事情:
將查詢與聯合鏈接在一起並對其進行排序
insert into tableB ([Type], BillNo, AMount)
select 'sales' as [Type], BillNo, amount as AMount from TableA union
select 'cash' as [Type], BillNo, TotalAmount as AMount from TableA union
select 'tax' as [Type], BillNo, tax as AMount from TableA
order by BillNo, [Type]
可能是您提出這樣的查詢:
select t.Type, billno,
case t.Type
when 'Sales' then Amount
when 'Cash' then TotalAmount
when 'Tax' then tax
end as Amount
from TableA
cross join (values ('Sales'), ('Cash'), ('Tax')) as t(Type)
我會使用apply
:
insert into tableB (Type, BillNo, AMount)
select tt.type, t.billno, tt.amount
from table t cross apply
( values ('sales', t.Amount),
('cash', t.TotalAmount),
('Tax', t.tax)
) tt(type, amount)
order by t.billno;
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