name.out

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

--
-- NAME
-- all inputs are silently truncated at NAMEDATALEN-1 (63) characters
--
-- fixed-length by reference
SELECT name 'name string' = name 'name string' AS "True";
 True 
------
 t
(1 row)

SELECT name 'name string' = name 'name string ' AS "False";
 False 
-------
 f
(1 row)

--
--
--
CREATE TABLE NAME_TBL(f1 name);
INSERT INTO NAME_TBL(f1) VALUES ('1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR');
INSERT INTO NAME_TBL(f1) VALUES ('1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopqr');
INSERT INTO NAME_TBL(f1) VALUES ('asdfghjkl;');
INSERT INTO NAME_TBL(f1) VALUES ('343f%2a');
INSERT INTO NAME_TBL(f1) VALUES ('d34aaasdf');
INSERT INTO NAME_TBL(f1) VALUES ('');
INSERT INTO NAME_TBL(f1) VALUES ('1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ');
SELECT '' AS seven, * FROM NAME_TBL;
 seven |                               f1                                
-------+-----------------------------------------------------------------
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
       | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
       | asdfghjkl;
       | 343f%2a
       | d34aaasdf
       | 
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(7 rows)

SELECT '' AS six, c.f1 FROM NAME_TBL c WHERE c.f1 <> '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 six |                               f1                                
-----+-----------------------------------------------------------------
     | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
     | asdfghjkl;
     | 343f%2a
     | d34aaasdf
     | 
(5 rows)

SELECT '' AS one, c.f1 FROM NAME_TBL c WHERE c.f1 = '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 one |                               f1                                
-----+-----------------------------------------------------------------
     | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
     | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(2 rows)

SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 < '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 three | f1 
-------+----
       | 
(1 row)

SELECT '' AS four, c.f1 FROM NAME_TBL c WHERE c.f1 <= '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 four |                               f1                                
------+-----------------------------------------------------------------
      | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
      | 
      | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(3 rows)

SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 > '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 three |                               f1                                
-------+-----------------------------------------------------------------
       | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
       | asdfghjkl;
       | 343f%2a
       | d34aaasdf
(4 rows)

SELECT '' AS four, c.f1 FROM NAME_TBL c WHERE c.f1 >= '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQR';
 four |                               f1                                
------+-----------------------------------------------------------------
      | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
      | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
      | asdfghjkl;
      | 343f%2a
      | d34aaasdf
      | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(6 rows)

SELECT '' AS seven, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*';
 seven |                               f1                                
-------+-----------------------------------------------------------------
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
       | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
       | asdfghjkl;
       | 343f%2a
       | d34aaasdf
       | 
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(7 rows)

SELECT '' AS zero, c.f1 FROM NAME_TBL c WHERE c.f1 !~ '.*';
 zero | f1 
------+----
(0 rows)

SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '[0-9]';
 three |                               f1                                
-------+-----------------------------------------------------------------
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
       | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
       | 343f%2a
       | d34aaasdf
       | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
(5 rows)

SELECT '' AS two, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*asdf.*';
 two |     f1     
-----+------------
     | asdfghjkl;
     | d34aaasdf
(2 rows)

DROP TABLE NAME_TBL;