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doris/docs/en/sql-reference/sql-functions/json-functions/json_array.md
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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title, language
title language
json_array en

json_array

Description

Syntax

VARCHAR json_array(VARCHAR,...)

Generate a json array containing the specified values, return empty if no values

example

MySQL> select json_array();
+--------------+
| json_array() |
+--------------+
| []           |
+--------------+

MySQL> select json_array(null);
+--------------------+
| json_array('NULL') |
+--------------------+
| [NULL]             |
+--------------------+


MySQL> SELECT json_array(1, "abc", NULL, TRUE, CURTIME());
+-----------------------------------------------+
| json_array(1, 'abc', 'NULL', TRUE, curtime()) |
+-----------------------------------------------+
| [1, "abc", NULL, TRUE, "10:41:15"]            |
+-----------------------------------------------+


MySQL> select json_array("a", null, "c");
+------------------------------+
| json_array('a', 'NULL', 'c') |
+------------------------------+
| ["a", NULL, "c"]             |
+------------------------------+

keyword

json_array