SQL Language Extension: EXECUTE BLOCK Function: Allow execute PL-SQL block as if it is stored procedure. Supports input and output parameters Autor: Vlad Khorsun <hvlad at users.sourceforge.net> Syntax: EXECUTE BLOCK [ (param datatype = ?, param datatype = ?, ...) ] [ RETURNS (param datatype, param datatype, ...) } AS [DECLARE VARIABLE var datatype; ...] BEGIN ... END Client-side: The call isc_dsql_sql_info with parameter isc_info_sql_stmt_type returns - isc_info_sql_stmt_select, if block has output parameters. Semantics of a call is similar to SELECT query - client has open cursor, can fetch data from it, and must close it after use. - isc_info_sql_stmt_exec_procedure, if block has no output parameters. Semantics of a call is similar to EXECUTE query - client has no cursor, execution runs until first SUSPEND or end of block The client should preprocess only head of the SQL statement or use '?' instead of ':' as parameter indicator because in a body of the block may be links to local variables and \ or parameters with a colon ahead. Example: User SQL is EXECUTE BLOCK (X INTEGER = :X) RETURNS (Y VARCHAR) AS DECLARE V INTEGER; BEGIN INSERT INTO T(...) VALUES (... :X ...); SELECT ... FROM T INTO :Y; SUSPEND; END Preprocessed SQL is EXECUTE BLOCK (X INTEGER = ?) RETURNS (Y VARCHAR) AS DECLARE V INTEGER; BEGIN INSERT INTO T(...) VALUES (... :X ...); SELECT ... FROM T INTO :Y; SUSPEND; END