PSQL Blocks

A self-contained, unnamed (“anonymous”) block of PSQL code can be executed dynamically in DSQL, using the EXECUTE BLOCK syntax. The header of an anonymous PSQL block may optionally contain input and output parameters. The body may contain local variable and cursor declarations; and a block of PSQL statements follows.

An anonymous PSQL block is not defined and stored as an object, unlike stored procedures and triggers. It executes in run-time and cannot reference itself.

Just like stored procedures, anonymous PSQL blocks can be used to process data and to retrieve data from the database.

Syntax (incomplete):

EXECUTE BLOCK
[(<inparam> = ? [, <inparam> = ? ...])]
[RETURNS (<outparam> [, <outparam> ...])]
AS
[<declarations>]
BEGIN
[<PSQL_statements>]
END

Table 7.2. PSQL Block Parameters

Argument	Description
inparam	Input parameter description
outparam	Output parameter description
declarations	A section for declaring local variables and named cursors
PSQL statements	PSQL and DML statements

Read more: See EXECUTE BLOCK for details.