ThreeLee

Results 2 issues of ThreeLee

the radixSort code has waste a lot of space. please focus on my change.

### Description In practical application scenarios, it is often necessary to extract different keys from a JSON data. For example: ``` select json_extract(col, jsonPath_1),json_extract(col, jsonPath_2),..., Json_extract(col, jsonPath_n) from values (json)...

enhancement