\set VERBOSITY terse
SET client_encoding = utf8;
SET search_path TO public, oracle;
--
-- test type modifier related rules
--
-- ERROR (typmod >= 1)
CREATE TABLE bar (a NVARCHAR2(0));
ERROR:  length for type varchar must be at least 1 at character 21
-- ERROR (number of typmods = 1)
CREATE TABLE bar (a NVARCHAR2(10, 1));
ERROR:  invalid type modifier at character 21
-- OK
CREATE TABLE bar (a VARCHAR(5000));
CREATE INDEX ON bar(a);
-- cleanup
DROP TABLE bar;
-- OK
CREATE TABLE bar (a NVARCHAR2(5));
--
-- test that no value longer than maxlen is allowed
--
-- ERROR (length > 5)
INSERT INTO bar VALUES ('abcdef');
ERROR:  input value too long for type nvarchar2(5)
-- ERROR (length > 5);
-- NVARCHAR2 does not truncate blank spaces on implicit coercion
INSERT INTO bar VALUES ('abcde  ');
ERROR:  input value too long for type nvarchar2(5)
-- OK
INSERT INTO bar VALUES ('abcde');
-- OK
INSERT INTO bar VALUES ('abcdef'::NVARCHAR2(5));
-- OK
INSERT INTO bar VALUES ('abcde  '::NVARCHAR2(5));
--OK
INSERT INTO bar VALUES ('abc'::NVARCHAR2(5));
--
-- test whitespace semantics on comparison
--
-- equal
SELECT 'abcde   '::NVARCHAR2(10) = 'abcde   '::NVARCHAR2(10);
 ?column? 
----------
 t
(1 row)

-- not equal
SELECT 'abcde  '::NVARCHAR2(10) = 'abcde   '::NVARCHAR2(10);
 ?column? 
----------
 f
(1 row)

-- null safe concat (disabled by default)
SELECT NULL || 'hello'::varchar2 || NULL;
 ?column? 
----------
 
(1 row)

SET orafce.varchar2_null_safe_concat TO true;
SELECT NULL || 'hello'::varchar2 || NULL;
 ?column? 
----------
 hello
(1 row)