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Add support for an optional INTO clause to PL/PgSQL's EXECUTE command.

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This allows the result of executing a SELECT to be assigned to a row
variable, record variable, or list of scalars. Docs and regression tests
updated. Per Pavel Stehule, improvements and cleanup by Neil Conway.
This commit is contained in:
Neil Conway
2005-06-07 02:47:23 +00:00
parent 0f011f6daa
commit c59887f916
6 changed files with 169 additions and 25 deletions
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35
src/test/regress/expected/plpgsql.out
View File

@@ -2380,3 +2380,38 @@ ERROR: control reached end of function without RETURN
CONTEXT: PL/pgSQL function "missing_return_expr"
drop function void_return_expr();
drop function missing_return_expr();
--
-- EXECUTE ... INTO test
--
create table eifoo (i integer, y integer);
create type eitype as (i integer, y integer);
create or replace function execute_into_test(varchar) returns record as $$
declare
_r record;
_rt eifoo%rowtype;
_v eitype;
i int;
j int;
k int;
begin
execute 'insert into '||$1||' values(10,15)';
execute 'select (row).* from (select row(10,1)::eifoo) s' into _r;
raise notice '% %', _r.i, _r.y;
execute 'select * from '||$1||' limit 1' into _rt;
raise notice '% %', _rt.i, _rt.y;
execute 'select *, 20 from '||$1||' limit 1' into i, j, k;
raise notice '% % %', i, j, k;
execute 'select 1,2' into _v;
return _v;
end; $$ language plpgsql;
select execute_into_test('eifoo');
NOTICE: 10 1
NOTICE: 10 15
NOTICE: 10 15 20
execute_into_test
-------------------
(1,2)
(1 row)
drop table eifoo cascade;
drop type eitype cascade;

32
src/test/regress/sql/plpgsql.sql
View File

@@ -2018,3 +2018,35 @@ select missing_return_expr();
drop function void_return_expr();
drop function missing_return_expr();
--
-- EXECUTE ... INTO test
--
create table eifoo (i integer, y integer);
create type eitype as (i integer, y integer);
create or replace function execute_into_test(varchar) returns record as $$
declare
_r record;
_rt eifoo%rowtype;
_v eitype;
i int;
j int;
k int;
begin
execute 'insert into '||$1||' values(10,15)';
execute 'select (row).* from (select row(10,1)::eifoo) s' into _r;
raise notice '% %', _r.i, _r.y;
execute 'select * from '||$1||' limit 1' into _rt;
raise notice '% %', _rt.i, _rt.y;
execute 'select *, 20 from '||$1||' limit 1' into i, j, k;
raise notice '% % %', i, j, k;
execute 'select 1,2' into _v;
return _v;
end; $$ language plpgsql;
select execute_into_test('eifoo');
drop table eifoo cascade;
drop type eitype cascade;