Runtime components : Service components : Database services : Database Table Mapping : Tasks : Executing SQL statements
  
Executing SQL statements
There are two methods for executing an SQL statement: executeSQLQuery() and executeSQLUpdate().
The executeSQLQuery() method executes an SQL statement that returns a single result set, and also updates the operation context with the result set. It takes the literal SQL statement, an output formatter name, and a context instance as its arguments.
The executeSQLUpdate() method executes an SQL INSERT, UPDATE, or DELETE statement. It takes a literal SQL statement and returns the row count (the number of affected rows).
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