| --- |
| { |
| "title": "JSON_ARRAY", |
| "language": "en" |
| } |
| --- |
| |
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| |
| ## 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"] | |
| +------------------------------+ |
| ``` |
| ### keywords |
| json,array,json_array |