JSON_EXISTS
MariaDB starting with 10.2.3
JSON functions were added in MariaDB 10.2.3.
Syntax
Description
Determines whether a specified JSON value exists in the given data. Returns 1 if found, 0 if not, or NULL if any of the inputs were NULL.
Examples
SELECT JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2");
+------------------------------------------------------------+
| JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2") |
+------------------------------------------------------------+
| 1 |
+------------------------------------------------------------+
SELECT JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key3");
+------------------------------------------------------------+
| JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key3") |
+------------------------------------------------------------+
| 0 |
+------------------------------------------------------------+
SELECT JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2[1]");
+---------------------------------------------------------------+
| JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2[1]") |
+---------------------------------------------------------------+
| 1 |
+---------------------------------------------------------------+
SELECT JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2[10]");
+----------------------------------------------------------------+
| JSON_EXISTS('{"key1":"xxxx", "key2":[1, 2, 3]}', "$.key2[10]") |
+----------------------------------------------------------------+
| 0 |
+----------------------------------------------------------------+
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https://mariadb.com/kb/en/json_exists/