[cherry-pick](branch-2.1) add function regexp_extract_or_null (#39561)

# Proposed changes pick https://github.com/apache/doris/pull/38296
2024-08-21 09:14:58 +08:00
parent 8e9bc7449b
commit bb687bd69c
7 changed files with 148 additions and 6 deletions
--- a/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_regexp.out
+++ b/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_regexp.out
@ -49,6 +49,18 @@ b
 -- !sql --
 d

+-- !sql --
+
+
+-- !sql --
+b
+
+-- !sql --
+d
+
+-- !sql --
+\N
+
 -- !sql --
 ['18','17']