merge two tables ssms code example
Example 1: tsql merge example
MERGE esqlProductTarget T
USING esqlProductSource S
ON (S.ProductID = T.ProductID)
WHEN MATCHED
THEN UPDATE
SET T.Name = S.Name,
T.ProductNumber = S.ProductNumber,
T.Color = S.Color
WHEN NOT MATCHED BY TARGET
THEN INSERT (ProductID, Name, ProductNumber, Color)
VALUES (S.ProductID, S.Name, S.ProductNumber, S.Color)
WHEN NOT MATCHED BY SOURCE
THEN DELETE;
Example 2: t-sql merge example
MERGE sales.category t
USING sales.category_staging s
ON (s.category_id = t.category_id)
WHEN MATCHED
THEN UPDATE SET
t.category_name = s.category_name,
t.amount = s.amount
WHEN NOT MATCHED BY TARGET
THEN INSERT (category_id, category_name, amount)
VALUES (s.category_id, s.category_name, s.amount)
WHEN NOT MATCHED BY SOURCE
THEN DELETE;