You can pass the full SQL query through an input port in the transformation. To pass the full query, create a query in the SQL Editor that consists of one string variable to represent the full query:
~Query_Port~
The transformation receives the query in the Query_Port input port.
The following figure shows ports in the SQL transformation:
The Integration Service replaces the ~Query_Port~ variable in the dynamic query with the SQL statements from the source. It prepares the query and sends it to the database to process. The database executes the query. The SQL transformation returns database errors to the SQLError port.
The following mapping shows how to pass the query to the SQL transformation:
When you pass the full query, you can pass more than one query statement for each input row. For example, the source might contain the following rows:
DELETE FROM Person WHERE LastName = ‘Jones’; INSERT INTO Person (LastName, Address) VALUES ('Smith', '38 Summit Drive')
DELETE FROM Person WHERE LastName = ‘Jones’; INSERT INTO Person (LastName, Address) VALUES ('Smith', '38 Summit Drive')
DELETE FROM Person WHERE LastName = ‘Russell’;
You can pass any type of query in the source data. When you configure SELECT statements in the query, you must configure output ports for the database columns you retrieve from the database. When you mix SELECT statements and other types of queries, the output ports that represent database columns contain null values when no database columns are retrieved.
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