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;

Source: essentialsql.com

Merge clause with inner join

MERGE table1
USING (SELECT table3.keycolumn,
              table2.DataColumn1,
              table2.DataColumn2
       FROM table2
       INNER JOIN table3
           ON table2.anotherKey = table3.anotherKey
       WHERE table2.anotherKey = 'A1') tmpTable
ON 
   table1.keyColumn = tmpTable.keyColumn
WHEN MATCHED THEN
       UPDATE
       SET table1.DataColumn1 = tmpTable.DataColumn1
            ,table1.DataColumn2 = tmpTable.DataColumn2;

Source: stackoverflow.com

Similar codes

1 vote163 views1 answer
How to get previous year from sysdate in oracle
SQL
1 vote142 views1 answer
How to see logical reads in sql server
SQL
13 votes296 views4 answers
Sql joining 3 tables
SQL
6 votes152 views2 answers
Stored procedure to delete data from table in mysql
SQL
10 votes135 views3 answers
Sql limit results
SQL
4 votes160 views1 answer
Oracle nls_date_format
SQL
4 votes194 views1 answer
Postgresql list sequences
SQL
32 votes158 views6 answers
How to change column name in sql
SQL
0 vote136 views1 answer
Create new table pl sql
SQL
2 votes158 views2 answers
Sql lag
SQL