something gone wrong the same...
REATE OR REPLACE FUNCTION check_if_if_exist(id integer, table_name
character, table_column character)
RETURNS boolean AS
$BODY$
DECLARE res BOOLEAN;
BEGIN
EXECUTE 'SELECT EXISTS(SELECT * FROM'||table_name||
'WHERE'||table_column||'='||$1||')' INTO res USING id;
RETURN res;
END;
select check_if_exist(10, 'prova', 'identificatore');
RROR: function check_if_exist(integer, unknown, unknown) does not exist
LINE 1: select check_if_exist(10, 'prova', 'identificatore');
^
HINT: No function matches the given name and argument types. You might need
to add explicit type casts.
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