I have table A:
+---------------+------------+-------+-------------+
| name | id_product | price | price_medium|
+---------------+------------+-------+-------------+
| phone | 1 | 300 | 300 |
| mouse | 2 | 50 | 75 |
| phone | 1 | 250 | 300 |
| keyboard | 3 | 100 | 100 |
| mouse | 2 | 100 | 75 |
| phone | 1 | 350 | 300 |
+---------------+------------+------+--------------+
In table B is a temporary table, products are added each time a purchase is made and then deleted. When it is sent, I want to update in table A the column "price_medium" that I have in table B whose product_id is the addition.
+---------------+------------+-------+-------------+
| name | id_product | price | price_medium|
+---------------+------------+-------+-------------+
| phone | 1 | 100 | 220 |
| mouse | 2 | 125 | 92 |
| phone | 1 | 100 | 220 |
+---------------+------------+------+--------------+
The final result would be in table A
+---------------+------------+-------+-------------+
| name | id_product | price | price_medium|
+---------------+------------+-------+-------------+
| phone | 1 | 300 | 220 |
| mouse | 2 | 50 | 92 |
| phone | 1 | 250 | 220 |
| keyboard | 3 | 100 | 100 |
| mouse | 2 | 100 | 92 |
| phone | 1 | 350 | 220 |
+---------------+------------+------+--------------+
Inner Join
between the two tables using id_product
Set
to update price_medium
in tableA (equal to price_medium
in tableB)Try:
UPDATE tableA AS tA
JOIN tableB AS tB ON tB.id_product = tA.id_product
SET tA.price_medium = tB.price_medium
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