Pxl 1943a5da5f [docs] fix some document error and adjust some function document location ...

1. move `group_concat` from string-functions to aggregate-functions.
2. add `json_array`/`json_object`/`json_quote` to sidebar file.
3. move  `json_array`/`json_object`/`json_quote`/`get_json_double`/`get_json_int`/`get_json_string` to json-functions.
4.  change `group_concat` document to uppercase

2022-02-19 11:59:55 +08:00

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sql-functions

[docs] fix some document error and adjust some function document location

2022-02-19 11:59:55 +08:00

sql-statements

[doc] update alter table docs (#8076)

2022-02-17 10:52:59 +08:00