| -- |
| -- VARCHAR |
| -- |
| CREATE TABLE VARCHAR_TBL(f1 varchar(1)); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('a'); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('A'); |
| -- any of the following three input formats are acceptable |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('1'); |
| INSERT INTO VARCHAR_TBL (f1) VALUES (2); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('3'); |
| -- zero-length char |
| INSERT INTO VARCHAR_TBL (f1) VALUES (''); |
| -- try varchar's of greater than 1 length |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('cd'); |
| ERROR: value too long for type character varying(1) |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('c '); |
| SELECT * FROM VARCHAR_TBL; |
| f1 |
| ---- |
| a |
| A |
| 1 |
| 2 |
| 3 |
| |
| c |
| (7 rows) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 <> 'a'; |
| f1 |
| ---- |
| A |
| 1 |
| 2 |
| 3 |
| |
| c |
| (6 rows) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 = 'a'; |
| f1 |
| ---- |
| a |
| (1 row) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 < 'a'; |
| f1 |
| ---- |
| A |
| 1 |
| 2 |
| 3 |
| |
| (5 rows) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 <= 'a'; |
| f1 |
| ---- |
| a |
| A |
| 1 |
| 2 |
| 3 |
| |
| (6 rows) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 > 'a'; |
| f1 |
| ---- |
| c |
| (1 row) |
| |
| SELECT c.* |
| FROM VARCHAR_TBL c |
| WHERE c.f1 >= 'a'; |
| f1 |
| ---- |
| a |
| c |
| (2 rows) |
| |
| DROP TABLE VARCHAR_TBL; |
| -- |
| -- Now test longer arrays of char |
| -- |
| CREATE TABLE VARCHAR_TBL(f1 varchar(4)); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('a'); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('ab'); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd'); |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('abcde'); |
| ERROR: value too long for type character varying(4) |
| INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd '); |
| SELECT * FROM VARCHAR_TBL; |
| f1 |
| ------ |
| a |
| ab |
| abcd |
| abcd |
| (4 rows) |
| |