On Mon, May 6, 2013 at 10:56 AM, Simon Slavin <slav...@bigfraud.org> wrote:
>
> Unless you include your collation code, it's hard to reproduce your
> behaviour. Can you please try to find a demonstration with a collation
> order that's native to SQLite ? Perhaps a three-row example using "COLLATE
> NOCASE" ?
>
>
You are correct, Simon, that Staffan's message was really just a vague hint
of something wrong. But based on that meager hint, I have been able to
come up with a suspicious-looking test script using the built-in "nocase"
collation. To wit:
CREATE TABLE t1(a);
INSERT INTO t1 VALUES('abc');
INSERT INTO t1 VALUES('def');
CREATE TABLE t2(a);
INSERT INTO t2 VALUES('DEF');
SELECT a FROM t1 EXCEPT SELECT a FROM t2 ORDER BY a;
SELECT '-----------------';
SELECT a FROM t1 EXCEPT SELECT a FROM t2 ORDER BY a COLLATE nocase;
SELECT '-----------------';
SELECT a FROM (SELECT a FROM t1 EXCEPT SELECT a FROM t2)
ORDER BY a COLLATE nocase;
--
D. Richard Hipp
d...@sqlite.org
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