[Bug] fix replace function bug (#6605)

* fix replace function bug * fix replace docs
2021-09-14 09:59:13 +08:00
parent 6d94b7bde2
commit 225bdb1fda
4 changed files with 14 additions and 2 deletions
--- a/be/test/exprs/string_functions_test.cpp
+++ b/be/test/exprs/string_functions_test.cpp
@ -559,6 +559,11 @@ TEST_F(StringFunctionsTest, replace) {
    ASSERT_EQ(StringVal("http://华夏zhongguo:9090"),
              StringFunctions::replace(ctx, StringVal("http://中国hello:9090"),
                                       StringVal("中国hello"), StringVal("华夏zhongguo")));
+
+    //old substring is at the beginning of string
+    ASSERT_EQ(StringVal("ftp://www.baidu.com:9090"),
+              StringFunctions::replace(ctx, StringVal("http://www.baidu.com:9090"),
+                                       StringVal("http"), StringVal("ftp")));
 }

 TEST_F(StringFunctionsTest, parse_url) {