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|
-- test quoting functions
CREATE FUNCTION quote(t text, how text) RETURNS text AS $$
if how == "literal":
return plpy.quote_literal(t)
elif how == "nullable":
return plpy.quote_nullable(t)
elif how == "ident":
return plpy.quote_ident(t)
else:
raise plpy.Error("unrecognized quote type %s" % how)
$$ LANGUAGE plpython3u;
SELECT quote(t, 'literal') FROM (VALUES
('abc'),
('a''bc'),
('''abc'''),
(''),
(''''),
('xyzv')) AS v(t);
quote
-----------
'abc'
'a''bc'
'''abc'''
''
''''
'xyzv'
(6 rows)
SELECT quote(t, 'nullable') FROM (VALUES
('abc'),
('a''bc'),
('''abc'''),
(''),
(''''),
(NULL)) AS v(t);
quote
-----------
'abc'
'a''bc'
'''abc'''
''
''''
NULL
(6 rows)
SELECT quote(t, 'ident') FROM (VALUES
('abc'),
('a b c'),
('a " ''abc''')) AS v(t);
quote
--------------
abc
"a b c"
"a "" 'abc'"
(3 rows)
|
