## Proposed changes
https://github.com/apache/doris/pull/39358
```
CREATE TABLE testdb (
K1 BIGINT,
K2 FLOAT
) properties("replication_num" = "1");
insert into testdb values(1,1.1);
select mod(k1,k2) from testdb;
mysql [test10]>select mod(k1,k2) from testdb;
ERROR 1105 (HY000): errCode = 2, detailMessage = (127.0.0.1)[INTERNAL_ERROR]Function mod get failed, expr is VectorizedFnCall[mod](arguments=K1, K2,return=Nullable(Float32)) and return type is Nullable(Float32).
```
<!--Describe your changes.-->
## Proposed changes
Issue Number: close #xxx
<!--Describe your changes.-->
## Proposed changes
Issue Number: close #xxx
add testcases like:
```groovy
qt_notnull1 "select covar_samp(non_nullable(x), non_nullable(y)) from test_covar_samp"
qt_notnull2 "select covar_samp(x, non_nullable(y)) from test_covar_samp"
qt_notnull3 "select covar_samp(non_nullable(x), y) from test_covar_samp"
```
before they will all coredump in 2.1
1. fix the return type dcheck error:
```
mysql [test]>select (json_replace(a, '$.fparam.nested_2', "qwe")) from json_table_2 limit 1;
ERROR 1105 (HY000): errCode = 2, detailMessage = (10.16.10.8)[INTERNAL_ERROR]Function json_replace get failed, expr is VectorizedFnCall[json_replace](arguments=a, String, String, String,return=Nullable(String)) and return type is Nullable(String).
```
2. improve the json_replace/json_insert/json_set function execute of not
convert const column, test about could faster 1s on 1000w table rows
## Proposed changes
Issue Number: close #xxx
<!--Describe your changes.-->
## Proposed changes
Issue Number: close #xxx
For the latest published 2.1 version `2.1.5`:
```
max_be_exec_version=4;
AGG_FUNCTION_NEW=2;
```
and `branch-2.1`:
```
max_be_exec_version=5;
AGG_FUNCTION_NEW=2;
```
It will cause problem when upgrading.
This PR fix the problem, set `AGG_FUNCTION_NEW` to `5`.
## Proposed changes
this PR https://github.com/apache/doris/pull/39270 have change the agg
of window funnel
and max_be_exec_version is update to 5, in order to compatibility of the
agg function when upgrade.
<!--Describe your changes.-->
