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--
-- 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 ('');
INSERT INTO VARCHAR_TBL (f1) VALUES ('c ');
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
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2
3
(5 rows)
SELECT c.*
FROM VARCHAR_TBL c
WHERE c.f1 <= 'a';
f1
----
a
A
1
2
3
(6 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 ('abcd ');
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