On 04/03/2012 07:01 AM, leaf_yxj wrote:
***********************************************************
CREATE OR REPLACE FUNCTION truncate_t (IN tablename text)
RETURNS VOID
AS
$$
BEGIN
EXECUTE 'TRUNCATE TABLE ' || quote_ident(tablename) || 'CASCADE;';
EXCEPTION
WHEN undefined_table THEN
RAISE EXCEPTION 'Table "%" does not exists', tablename;
END;
$$
LANGUAGE plpgsql SECURITY DEFINER STRICT;
***********************************************************
This works . Thank you very much.
***********************************************************
CREATE OR REPLACE FUNCTION truncate_t (tablename text)
RETURNS VOID
AS
$$
BEGIN
EXECUTE 'TRUNCATE TABLE ' || quote_ident(tablename) || 'CASCADE;';
EXCEPTION
WHEN undefined_table THEN
RAISE EXCEPTION 'Table "%" does not exists', tablename;
END;
$$
LANGUAGE plpgsql SECURITY DEFINER STRICT;
***********************************************************
This works,too. Thank you very much. What's the difference between ( IN
tablename text)
and ( tablename text).
---------- one more questions thanks.
After I created the function sucessfully , I want to execute the function. I
get errors as follows :
rrp=> select truncate_t(t1);
ERROR: column "t1" does not exist
LINE 1 : select truncate_t(t1);
^
You need to pass in a text value:
select truncate_t('t1');
rrp=> select truncate_t(rrp.t1);
ERROR:missing FROM-clause entry for table "rrp"
LINE 1 : select truncate_t(rrp.t1);
^
Same above.
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Adrian Klaver
adrian.klaver@xxxxxxxxx
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