[英]Mysql SELECT … WHERE IN (multiple sub selects from multiple tables)
Mysql需要從一個表中獲取數據,其中id與另一表中的列值相同。 但是必須從另一個表中僅獲取列值,其ID與其他兩個表中的列值相同( IN
)。
表如下:
具有列的表名稱sales_invoices
(在下面,我未顯示所有列,而是顯示了該問題所需的列)。
IdInvoices
| Date
表名稱purchase_invoices
與列
IdInvoicesP
| Date
帶列的表名稱items
IdI
| IdGoodsServices
| IdInvoices
表名稱goods_services
與列
IdGs
(唯一值)
這是表格之間的鏈接
IdGs
= IdGoodsServices
IdInvoices
( items
)= IdInvoices
( sales_invoices
)= IdInvoicesP
嘗試了代碼的多種變體。 在所有情況下,都會出錯。 下面是最后使用的代碼。
SELECT count(DISTINCT `IdGs`) FROM `goods_services` WHERE `IdGs` IN
( SELECT `IdGoodsServices` FROM `items` WHERE `IdInvoices` IN
( SELECT `IdInvoices`, `IdInvoicesP` FROM
`sales_invoices`, `purchase_invoices` WHERE `Date` <= ? )
)
想要計算在特定日期之前發出(寫)的銷售和購買發票中包含的IdGs
(產品或商品/服務代碼)。
goods_services
和sales_invoices
/ purchase_invoices
之間沒有直接鏈接。 表items
被鏈接到兩個goods_services
和( sales_invoices
/ purchase_invoices
)
與上面的代碼得到錯誤
SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'Date' in where clause is ambiguous
嘗試從子表中僅選擇一個子表,獲得一些結果且沒有錯誤。
這是查詢
SELECT count(DISTINCT `IdGs`) FROM `goods_services` WHERE `IdGs` IN
( SELECT `IdGoodsServices` FROM `30u2s5r_items` WHERE `IdInvoices` IN
( SELECT `IdInvoicesP` FROM
`30u2s5r_purchase_invoices` WHERE `Date` <= ? )
)
下面是工作代碼 (如我到目前為止測試的那樣)。
SELECT count(DISTINCT `IdGs`) FROM `goods_services` WHERE `IdGs` IN
(SELECT `IdGoodsServices` FROM `items` WHERE
`IdInvoices` IN
(SELECT DISTINCT `IdInvoices` FROM `sales_invoices`
WHERE `sales_invoices`.`Date` <= ? )
OR
`IdInvoices` IN
( SELECT DISTINCT `IdInvoicesP` FROM `purchase_invoices`
WHERE `purchase_invoices`.`Date` <= ? )
)
使用Purchase_invoices.Date或sales_invoices.Date
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