Developer Transformation Guide

10.5
- 10.5.2
- 10.4.1
- 10.4.0

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Query Statement Processing

The type of SQL query determines how many rows the SQL transformation returns. The SQL transformation can return zero, one, or multiple rows. When the query contains a SELECT statement, the SQL transformation returns each column from the database to an output port. The transformation returns all qualifying rows.

The following table lists the output rows that the SQL transformation generates for different types of query statements when no errors occur in query mode:

Query Statement	Output Rows
UPDATE, INSERT, DELETE only	One row for each statement in the query.
One or more SELECT statements	Total number of database rows retrieved.
DDL queries such as CREATE, DROP, TRUNCATE	One row for each statement in the query.