lyne7-sc commented on code in PR #22727:
URL: https://github.com/apache/datafusion/pull/22727#discussion_r3360143705
##########
datafusion/sqllogictest/test_files/predicates.slt:
##########
@@ -204,12 +204,65 @@ SELECT * FROM test WHERE column1 ~ 'z'
----
Bazzz
+query T
+SELECT * FROM test WHERE column1 ~ '^Bazzz$'
+----
+Bazzz
+
+query T
+SELECT * FROM test WHERE column1 ~ '^(foo|Bazzz)$'
+----
+foo
+Bazzz
+
+statement ok
+CREATE TABLE test_regex_utf8view(s VARCHAR) AS VALUES ('foo'), ('Bazzz');
+
+query T
+SELECT * FROM test_regex_utf8view WHERE s ~ '^Bazzz$'
+----
+Bazzz
+
+query T
+SELECT * FROM test_regex_utf8view WHERE s ~ '^(foo|Bazzz)$'
+----
+foo
+Bazzz
+
+# Case-insensitive anchored match over Utf8View: must be simplified to ILIKE
+# (not a case-sensitive Eq) and must keep operand types as Utf8View.
+query T
+SELECT * FROM test_regex_utf8view WHERE s ~* '^bazzz$'
+----
+Bazzz
+
+# Case-insensitive anchored alternation over Utf8View
+query T rowsort
+SELECT * FROM test_regex_utf8view WHERE s ~* '^(foo|bazzz)$'
+----
+Bazzz
+foo
+
+statement ok
+DROP TABLE test_regex_utf8view;
+
query T
SELECT * FROM test WHERE column1 ~* 'z'
----
Bazzz
ZZZZZ
+query T
+SELECT * FROM test WHERE column1 ~* '^barrr$'
+----
+Barrr
+
+query T
+SELECT * FROM test WHERE column1 ~* '^(barrr|bazzz)$'
Review Comment:
added `!~` and `!~*` coverage.
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