---
{
    "title": "json_array",
    "language": "zh-CN"
}
---

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# json_array
## description
### Syntax

`VARCHAR json_array(VARCHAR,...)`


生成一个包含指定元素的json数组,未指定时返回空数组

## 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