Sergey,
On Nov 14, 2005, at 2:03 AM, Sergey Karin wrote:
I have found a strange error.
Perhaps your f_is_table_exist function is not working correctly.
Using variables for table references is not supported in plpgsql (any
version). You must use execute. Here is my test on 8.0.4:
create table test_table(a text, b integer);
create or replace function del_table(varchar) returns boolean as '
declare
tname alias for $1;
begin
drop table tname;
return true;
end;
' language plpgsql;
select del_table('test_table');
CREATE TABLE
CREATE FUNCTION
psql:16: ERROR: syntax error at or near "$1" at character 13
QUERY: drop table $1
CONTEXT: PL/pgSQL function "del_table" line 4 at SQL statement
psql:16: LINE 1: drop table $1
psql:16:
It works Ok if you change the drop line to
execute ''drop table '' || tname;
Also, the example that you indicate is working with execute is not
quoted correctly.
Best,
John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL
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