SQL statement data access indication in routines

The following table indicates whether or not an SQL statement (specified in the first column) is allowed to execute in a function or procedure with the specified SQL data access indication. If an executable SQL statement is encountered in a function or procedure defined with NO SQL, SQLSTATE 38001 is returned. For other executions contexts, SQL statements that are not supported in any context return SQLSTATE 38003. For other SQL statements not allowed in a CONTAINS SQL context, SQLSTATE 38004 is returned and in a READS SQL DATA context, SQLSTATE 38002 is returned. During creation of an SQL function or SQL procedure, a statement that does not match the SQL data access indication will cause SQLSTATE 42895 to be returned.

Table 83. SQL Statement and SQL Data Access Indication
SQL Statement NO SQL CONTAINS SQL READS SQL DATA MODIFIES SQL DATA
ALLOCATE DESCRIPTOR     Y Y
ALTER ...       Y
BEGIN DECLARE SECTION Y1 Y Y Y
CALL   Y Y Y
CLOSE     Y Y
COMMENT       Y
COMMIT3   Y Y Y
CONNECT (Type 1 and Type 2)3        
CREATE ...       Y
DEALLOCATE DESCRIPTOR     Y Y
DECLARE CURSOR Y1 Y Y Y
DECLARE GLOBAL TEMPORARY TABLE       Y
DECLARE PROCEDURE Y1 Y Y Y
DECLARE STATEMENT Y1 Y Y Y
DECLARE VARIABLE Y1 Y Y Y
DELETE       Y
DESCRIBE     Y Y
DESCRIBE INPUT     Y Y
DESCRIBE TABLE     Y Y
DISCONNECT3        
DROP ...       Y
END DECLARE SECTION Y1 Y Y Y
EXECUTE   Y2 Y2 Y
EXECUTE IMMEDIATE   Y2 Y2 Y
FETCH     Y Y
FREE LOCATOR   Y Y Y
GET DESCRIPTOR     Y Y
GET DIAGNOSTICS   Y Y Y
GRANT ...       Y
HOLD LOCATOR   Y Y Y
INCLUDE Y1 Y Y Y
INSERT       Y
LABEL       Y
LOCK TABLE   Y Y Y
OPEN     Y Y
PREPARE   Y Y Y
REFRESH TABLE       Y
RELEASE CONNECTION3        
RELEASE SAVEPOINT       Y
RENAME       Y
REVOKE ...       Y
ROLLBACK3   Y Y Y
ROLLBACK TO SAVEPOINT       Y
SAVEPOINT       Y
SELECT INTO     Y Y
SET CONNECTION3        
SET SESSION AUTHORIZATION     Y Y
SET CURRENT DEBUG MODE     Y Y
SET CURRENT DEGREE     Y Y
SET DESCRIPTOR     Y Y
SET ENCRYPTION PASSWORD   Y Y Y
SET OPTION Y1 Y Y Y
SET PATH   Y Y Y
SET RESULT SETS   Y Y Y
SET SCHEMA     Y Y
SET TRANSACTION   Y Y Y
SET variable   Y Y Y
SIGNAL   Y Y Y
UPDATE       Y
VALUES        
VALUES INTO     Y Y
WHENEVER Y1 Y Y Y
Notes:
  1. Although the NO SQL option implies that no SQL statements can be specified, non-executable statements are not restricted.
  2. It depends on the statement being executed. The statement specified for the EXECUTE statement must be a statement that is allowed in the context of the particular SQL access level in effect. For example, if the SQL access level in effect is READS SQL DATA, the statement must not be an INSERT, UPDATE, or DELETE.
  3. Connection management and transaction statements are not allowed in a procedure running on a remote server. COMMIT and ROLLBACK are not allowed in an ATOMIC SQL procedure.

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