SQL update query using joins

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SQL update query using joins

[ForumBot]

```
UPDATE im
SET mf_item_number = gm.SKU --etc
FROM item_master im
JOIN group_master gm
ON im.sku = gm.sku
JOIN Manufacturer_Master mm
ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
gm.manufacturerID = 34

```

To make it clear... The `UPDATE` clause can refer to an table alias specified in the `FROM` clause. So `im` in this case is valid

Generic example

```
UPDATE A
SET foo = B.bar
FROM TableA A
JOIN TableB B
ON A.col1 = B.colx
WHERE ...

```