MySQL如何使用JSON函数
作者:WeekendLife
时间:2023-04-27
浏览:2
JSON函数(5.7版本才支持)命令:json_object(函数)作用:转换json字符串应用场景:指定数据转换json字符串例子:mysql>selectjson_object("name","andyqian","database","MySQL");+---------------------------------------------------+|json_object("name","andyqian","database","MySQL")|+---------------------
JSON函数(5.7版本才支持)
命令:json_object(函数)
作用:转换json字符串
应用场景:指定数据转换json字符串
例子:
mysql> select json_object("name","andyqian","database","MySQL");
+---------------------------------------------------+
| json_object("name","andyqian","database","MySQL") |
+---------------------------------------------------+
| {"name": "andyqian", "database": "MySQL"} |
+---------------------------------------------------+
1 row in set (0.00 sec)其中包括json_array:
mysql> select json_array("name","andyqian","database","MySQL");
+--------------------------------------------------+
| json_array("name","andyqian","database","MySQL") |
+--------------------------------------------------+
| ["name", "andyqian", "database", "MySQL"] |
+--------------------------------------------------+
1 row in set (0.00 sec)判断是否为json字符串的json_valid():
select json_valid('{"name": "andyqian", "database": "MySQL"}');其中为有效json字符串时为1。
无效json字符串时为0.
还有很多方法,不再一一演示。
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