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New test cases and minor fixes for the optimization on this branch.

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FossilOrigin-Name: 70ac9ea1a6cb2f4906f00f1a04f668e5ba5eeed8d4d0fa4be57a9c9eb0683697
This commit is contained in:
dan
2017-04-13 18:33:33 +00:00
parent 839fa6d814
commit a74f5c2923
4 changed files with 85 additions and 18 deletions
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56
test/distinct2.test
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@ -85,4 +85,60 @@ do_execsql_test 600 {
SELECT DISTINCT x, x FROM t6a, t6b;
} {1 1}
do_execsql_test 700 {
CREATE TABLE t7(a, b, c);
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s WHERE (i+1)<200
)
INSERT INTO t7 SELECT i/100, i/50, i FROM s;
}
do_execsql_test 710 {
SELECT DISTINCT a, b FROM t7;
} {
0 0 0 1
1 2 1 3
}
do_execsql_test 720 {
SELECT DISTINCT a, b+1 FROM t7;
} {
0 1 0 2
1 3 1 4
}
do_execsql_test 730 {
CREATE INDEX i7 ON t7(a, b+1);
ANALYZE;
SELECT DISTINCT a, b+1 FROM t7;
} {
0 1 0 2
1 3 1 4
}
do_execsql_test 800 {
CREATE TABLE t8(a, b, c);
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s WHERE (i+1)<100
)
INSERT INTO t8 SELECT i/40, i/20, i/40 FROM s;
}
do_execsql_test 820 {
SELECT DISTINCT a, b, c FROM t8;
} {
0 0 0 0 1 0
1 2 1 1 3 1
2 4 2
}
do_execsql_test 820 {
SELECT DISTINCT a, b, c FROM t8 WHERE b=3;
} {1 3 1}
do_execsql_test 830 {
CREATE INDEX i8 ON t8(a, c);
ANALYZE;
SELECT DISTINCT a, b, c FROM t8 WHERE b=3;
} {1 3 1}
finish_test