[英]How to update table value based on another table
我有一個名為Product
的表,它的數據和表結構如下所示,
+-----------+-------------+-----------+
| ProductId | ProductName | SortValue |
+-----------+-------------+-----------+
| 1157 | ABC | 7 |
+-----------+-------------+-----------+
| 1156 | DEF | 3 |
+-----------+-------------+-----------+
| 1155 | GHI | 4 |
+-----------+-------------+-----------+
| 1154 | JKL | 2 |
+-----------+-------------+-----------+
| 1153 | MNO | 1 |
+-----------+-------------+-----------+
| 1152 | PQR | 5 |
+-----------+-------------+-----------+
| 1151 | STU | 6 |
+-----------+-------------+-----------+
我有另一個名為LocationProdut
的表,它是參考產品表和位置表,對於每個位置productid
都有自己的排序值。示例數據和表結構如下,
+--------------+-------------+-----------+
| fkLocationId | fkProductId | Sortvalue |
+--------------+-------------+-----------+
| 19 | 1157 | 1 |
+--------------+-------------+-----------+
| 19 | 1156 | 2 |
+--------------+-------------+-----------+
| 19 | 1155 | 3 |
+--------------+-------------+-----------+
| 19 | 1154 | 4 |
+--------------+-------------+-----------+
| 19 | 1153 | 5 |
+--------------+-------------+-----------+
| 19 | 1152 | 6 |
+--------------+-------------+-----------+
| 19 | 1151 | 7 |
+--------------+-------------+-----------+
| 20 | 1155 | 3 |
+--------------+-------------+-----------+
| 20 | 1154 | 4 |
+--------------+-------------+-----------+
| 20 | 1153 | 5 |
+--------------+-------------+-----------+
| 20 | 1152 | 6 |
+--------------+-------------+-----------+
| 20 | 1151 | 7 |
+--------------+-------------+-----------+
| 21 | 1155 | 3 |
+--------------+-------------+-----------+
| 21 | 1154 | 4 |
+--------------+-------------+-----------+
| 21 | 1153 | 5 |
+--------------+-------------+-----------+
| 21 | 1152 | 6 |
+--------------+-------------+-----------+
| 21 | 1151 | 7 |
+--------------+-------------+-----------+
現在我需要更新LocationProdut
表中的SortValue
庫,以便僅fkLocationId = 19 & 20
的Product
表的SortValue
預期 output 如下。
+------------+-------------+-----------+
| fkBranchId | fkServiceId | Sortvalue |
+------------+-------------+-----------+
| 19 | 1157 | 7 |
+------------+-------------+-----------+
| 19 | 1156 | 3 |
+------------+-------------+-----------+
| 19 | 1155 | 4 |
+------------+-------------+-----------+
| 19 | 1154 | 2 |
+------------+-------------+-----------+
| 19 | 1153 | 1 |
+------------+-------------+-----------+
| 19 | 1152 | 5 |
+------------+-------------+-----------+
| 19 | 1151 | 6 |
+------------+-------------+-----------+
| 20 | 1155 | 4 |
+------------+-------------+-----------+
| 20 | 1154 | 2 |
+------------+-------------+-----------+
| 20 | 1153 | 1 |
+------------+-------------+-----------+
| 20 | 1152 | 5 |
+------------+-------------+-----------+
| 20 | 1151 | 6 |
+------------+-------------+-----------+
| 21 | 1155 | 3 |
+------------+-------------+-----------+
| 21 | 1154 | 4 |
+------------+-------------+-----------+
| 21 | 1153 | 5 |
+------------+-------------+-----------+
| 21 | 1152 | 6 |
+------------+-------------+-----------+
| 21 | 1151 | 7 |
+------------+-------------+-----------+
您可以使用簡單的inner join
來更新所需的行:
UPDATE LP
SET
LP.Sortvalue = P.SortValue
FROM LocationProduct LP
JOIN Product P ON LP.fkProductId = P.ProductId
WHERE fkLocationId IN(19, 20);
請在此處找到 db<>fiddle。
UPDATE targetTable
SET targetTable.targetColumn = s.sourceColumn
FROM targetTable t
INNER JOIN sourceTable s
ON t.matchingColumn = s.matchingColumn
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