sqlite-users,
Can anyone please explain the results of the query below? I have tried
create a very simple test case. In brief returning 9 rows each starting
with an integer between zero and nine. Then check if it less than or equal
to five, between zero and five and then less than six. I expect all of
these comparisons to have the same result. I can't understand the results,
and '.explain' isn't any help.
SQLite version 3.18.0 2017-03-28 18:48:43
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite>
sqlite> WITH
...> t1(X) AS (
...> SELECT 1
...> UNION ALL
...> SELECT X+1 FROM t1
...> LIMIT 9
...> )
...> ,t2(Y) AS (
...> SELECT abs(random() % 10) FROM t1
...> )
...> SELECT Y, Y <= 5, Y BETWEEN 0 AND 5, Y < 6 FROM t2;
7|1|1|0
3|1|0|0
2|1|1|1
2|0|0|1
0|1|1|1
3|1|1|0
5|1|1|0
6|1|1|0
0|1|1|1
sqlite>
Thanks in advance for your assistance.
Kind Regards
Keith Maxwell
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