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

0 vote275 views3 answers
Drop multiple columns in sql
SQL
0 vote289 views1 answer
Mysql persistence.xml
SQL
1 vote306 views2 answers
Maximum number of tables in mysql
SQL
0 vote304 views1 answer
SQL query to verify the size of the table
SQL
0 vote235 views1 answer
Ms sql print more than 1 variable
SQL
0 vote314 views1 answer
Mysql bash execute sql file
SQL
2 votes283 views1 answer
Sql update alias
SQL
10 votes309 views2 answers
What is database
SQL
4 votes331 views3 answers
Postgres drop all tables
SQL
0 vote288 views1 answer
Avoid duplicate in one to many relationship join in sql
SQL