xtern commented on code in PR #2282:
URL: https://github.com/apache/ignite-3/pull/2282#discussion_r1254590091
##########
modules/runner/src/integrationTest/java/org/apache/ignite/internal/sql/engine/ItSecondaryIndexTest.java:
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@@ -993,4 +993,60 @@ public void testSaturatedBoundsHashIndex() {
assertQuery("SELECT * FROM t200 WHERE val =
1024").returnNothing().check();
}
+
+ @Test
+ public void testScanBooleanField() {
+ try {
+ sql("CREATE TABLE t(i INTEGER PRIMARY KEY, b BOOLEAN)");
+ sql("INSERT INTO t VALUES (0, TRUE), (1, TRUE), (2, FALSE), (3,
FALSE), (4, null)");
+ sql("CREATE INDEX t_idx ON t(b)");
+
+ assertQuery("SELECT i FROM t WHERE b = TRUE")
+ .matches(containsIndexScan("PUBLIC", "T", "T_IDX"))
+ .returns(0)
+ .returns(1)
+ .check();
+
+ assertQuery("SELECT i FROM t WHERE b = FALSE")
+ .matches(containsIndexScan("PUBLIC", "T", "T_IDX"))
+ .returns(2)
+ .returns(3)
+ .check();
+
+ assertQuery("SELECT i FROM t WHERE b IS TRUE")
+ .matches(containsIndexScan("PUBLIC", "T", "T_IDX"))
+ .returns(0)
+ .returns(1)
+ .check();
+
+ assertQuery("SELECT i FROM t WHERE b IS FALSE")
+ .matches(containsIndexScan("PUBLIC", "T", "T_IDX"))
+ .returns(2)
+ .returns(3)
+ .check();
+
+ // Support index scans for IS TRUE, IS FALSE but not for IS NOT
TRUE, IS NOT FALSE,
+ // since it requires multi-bounds scan and may not be effective.
Review Comment:
@lowka We can rewrite `a IS NOT TRUE` to `a = FALSE or a is NULL`. If I
understand correctly, then this will require several index scans, which (at
least for boolean) are less efficient than a single table scan :thinking:
What is the bug here?
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