[chore](function) add alias for split functions (#59200)

### What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

### Release note

None

### Check List (For Author)

- Test <!-- At least one of them must be included. -->
    - [ ] Regression test
    - [ ] Unit Test
    - [ ] Manual test (add detailed scripts or steps below)
    - [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
        - [ ] Previous test can cover this change.
        - [ ] No code files have been changed.
        - [ ] Other reason <!-- Add your reason?  -->

- Behavior changed:
    - [ ] No.
    - [ ] Yes. <!-- Explain the behavior change -->

- Does this need documentation?
    - [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
apache/doris-website#1214 -->

### Check List (For Reviewer who merge this PR)

- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
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Author: jacktengg

fe/fe-core/src/main/java/org/apache/doris/catalog/BuiltinScalarFunctions.java

@@ -993,8 +993,8 @@ public class BuiltinScalarFunctions implements FunctionHelper {
             scalar(Soundex.class, "soundex"),
             scalar(Space.class, "space"),
             scalar(SplitByChar.class, "split_by_char"),
-            scalar(SplitByRegexp.class, "split_by_regexp"),
-            scalar(SplitByString.class, "split_by_string"),
+            scalar(SplitByRegexp.class, "split_by_regexp", "regexp_split_to_array"),
+            scalar(SplitByString.class, "split_by_string", "split"),
             scalar(SplitPart.class, "split_part"),
             scalar(Sqrt.class, "sqrt"),
             scalar(StAsBinary.class, "st_asbinary"),

regression-test/data/nereids_p0/sql_functions/string_functions/test_split_by_string.out

@@ -1,9 +1,12 @@
 -- This file is automatically generated. You should know what you did if you want to edit this
 -- !sql --
-['a', 'b', 'c', 'd', 'e']
+["a", "b", "c", "d", "e"]
 
 -- !sql --
-['1', '2', '5', '5', '3']
+["你", "a", "好", "b", "世", "c", "界"]
+
+-- !sql --
+["1", "2", "5", "5", "3"]
 
 -- !sql --
 []
@@ -15,25 +18,25 @@
 []
 
 -- !sql --
-['a', 'b', 'c', 'd']
+["a", "b", "c", "d"]
 
 -- !sql --
-['', '', '', '']
+["", "", "", ""]
 
 -- !sql --
-['a', 'b', 'c', 'abcde']
+["a", "b", "c", "abcde"]
 
 -- !sql --
-['', '', 'a', 'b', 'c', '']
+["", "", "a", "b", "c", ""]
 
 -- !sql --
-['null']
+["null"]
 
 -- !sql --
-['1', '2,3', '4,5', 'abcde']
+["1", "2,3", "4,5", "abcde"]
 
 -- !sql --
-['a', 'b', 'c', 'd', 'e']
+["a", "b", "c", "d", "e"]
 
 -- !sql --
 []
@@ -45,45 +48,132 @@
 []
 
 -- !sql --
-['1', '2,3', '', '', '4,5, abcde']
+["1", "2,3", "", "", "4,5, abcde"]
 
 -- !sql --
-['', '', '']
+["", "", ""]
 
 -- !sql --
-['a', 'b', 'c']
+["a", "b", "c"]
 
 -- !sql --
-['a', 'b', 'c', '']
+["a", "b", "c", ""]
 
 -- !sql --
-['', 'a', 'b', 'c', '']
+["", "a", "b", "c", ""]
 
 -- !sql --
-['null']
+["null"]
 
 -- !sql --
-1	abcde		['a', 'b', 'c', 'd', 'e']
-2	12553		['1', '2', '5', '5', '3']
+1	abcde		["a", "b", "c", "d", "e"]
+2	12553		["1", "2", "5", "5", "3"]
 3			[]
 4		,	[]
 5		a	[]
-6	a1b1c1d	1	['a', 'b', 'c', 'd']
-7	,,,	,	['', '', '', '']
-8	a,b,c	,	['a', 'b', 'c']
-9	a,b,c,	,	['a', 'b', 'c', '']
+6	a1b1c1d	1	["a", "b", "c", "d"]
+7	,,,	,	["", "", "", ""]
+8	a,b,c	,	["a", "b", "c"]
+9	a,b,c,	,	["a", "b", "c", ""]
 10	\N	,	\N
-11	a,b,c,12345,	,	['a', 'b', 'c', '12345', '']
+11	a,b,c,12345,	,	["a", "b", "c", "12345", ""]
+12	你a好b世c界		["你", "a", "好", "b", "世", "c", "界"]
 
 -- !sql --
-1	1,,2,3,,4,5,,abcde	,,	['1', '2,3', '4,5', 'abcde']
-2	abcde		['a', 'b', 'c', 'd', 'e']
+1	1,,2,3,,4,5,,abcde	,,	["1", "2,3", "4,5", "abcde"]
+2	abcde		["a", "b", "c", "d", "e"]
 3			[]
 4		,	[]
 5		a	[]
-6	1,,2,3,,,,,,4,5,,abcde	,,	['1', '2,3', '', '', '4,5', 'abcde']
-7	,,,	,	['', '', '', '']
-8	a,b,c	,	['a', 'b', 'c']
-9	a,b,c,	,	['a', 'b', 'c', '']
+6	1,,2,3,,,,,,4,5,,abcde	,,	["1", "2,3", "", "", "4,5", "abcde"]
+7	,,,	,	["", "", "", ""]
+8	a,b,c	,	["a", "b", "c"]
+9	a,b,c,	,	["a", "b", "c", ""]
 10	\N	,	\N
 
+-- !sql_1 --
+1	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]
+2	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]
+
+-- !sql_2 --
+3	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]
+4	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]	["a", "b", "c"]
+
+-- !sql_3 --
+1	[]	[]	[]	[]
+2	[]	[]	[]	[]
+3	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]
+4	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]	["a", ",", "b", ",", "c"]
+
+-- !sql_4 --
+1	[]	[]	[]	[]
+2	[]	[]	[]	[]
+3	[]	[]	[]	[]
+4	[]	[]	[]	[]
+
+-- !sql_alias --
+["a", "b", "c", "d", "e"]
+
+-- !sql_alias --
+["你", "a", "好", "b", "世", "c", "界"]
+
+-- !sql_alias --
+["1", "2", "5", "5", "3"]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+["a", "b", "c", "d"]
+
+-- !sql_alias --
+["", "", "", ""]
+
+-- !sql_alias --
+["a", "b", "c", "abcde"]
+
+-- !sql_alias --
+["", "", "a", "b", "c", ""]
+
+-- !sql_alias --
+["null"]
+
+-- !sql_alias --
+["1", "2,3", "4,5", "abcde"]
+
+-- !sql_alias --
+["a", "b", "c", "d", "e"]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+[]
+
+-- !sql_alias --
+["1", "2,3", "", "", "4,5, abcde"]
+
+-- !sql_alias --
+["", "", ""]
+
+-- !sql_alias --
+["a", "b", "c"]
+
+-- !sql_alias --
+["a", "b", "c", ""]
+
+-- !sql_alias --
+["", "a", "b", "c", ""]
+
+-- !sql_alias --
+["null"]
+

regression-test/data/query_p0/sql_functions/string_functions/test_split_by_regexp.out

@@ -94,3 +94,15 @@ a	["a"]
 ,	[","]
 ,	[","]
 
+-- !select_alias1 --
+["a", "b", "c", "d", "e"]
+
+-- !select_alias2 --
+["a", "bc", "de", "f"]
+
+-- !select_alias3 --
+\N
+
+-- !select_alias4 --
+\N
+