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How to search JSON array in MySQL?

You may search an array of integers as follows: JSON_CONTAINS(‘[1,2,3,4,5]’,’7′,’$’) Returns: 0 JSON_CONTAINS(‘[1,2,3,4,5]’,’1′,’$’) Returns: 1 You may search an array of strings as follows: JSON_CONTAINS(‘[“a”,”2″,”c”,”4″,”x”]’,'”x”‘,’$’) Returns: 1 JSON_CONTAINS(‘[“1″,”2″,”3″,”4″,”5”]’,'”7″‘,’$’) Returns: 0 Note: JSON_CONTAINS returns either 1 or 0 In your case you may search using a query like so: SELECT * from my_table WHERE JSON_CONTAINS(data, ‘2’, … Read more

JSON vs. Serialized Array in database [closed]

JSON encode() & decode() PHP Version >= 5.0.0 Nesting Limit of 20. PHP Version >= 5.2.3 Nesting Limit of 128. PHP Version >= 5.3.0 Nesting Limit of 512. Small footprint vs PHP’s serialize’d string. serialize() & unserialize() PHP Version >= 4.0.0 Methods are not lost on PHP Datatype Object. __wakeup() magic method called on any … Read more

MySQL search json value by key in array

[*] You’re essentially meaning to apply selection and projection to the array elements and object fields of your JSON document. You need to do something like a WHERE clause to select a “row” within the array, and then do something like picking one of the fields (not the one you used in your selection criteria). … Read more

How to update JSON data type column in MySQL 5.7.10?

Thanks @wchiquito for pointing me right direction. I solved the problem. Here is how I did it. mysql> select * from t1; +—————————————-+——+ | data | id | +—————————————-+——+ | {“key1”: “value1”, “key2”: “VALUE2”} | 1 | | {“key2”: “VALUE2”} | 2 | | {“key2”: “VALUE2”} | 1 | | {“a”: “x”, “b”: “y”, “key2”: … Read more

Using MySQL JSON field to join on a table

With the help of Feras’s comment and some fiddling: SELECT u.user_id, u.user_name, g.user_group_id, g.group_name FROM user u LEFT JOIN user_group g on JSON_CONTAINS(u.user_groups, CAST(g.user_group_id as JSON), ‘$’) This appears to work, let me know if there’s a better way.

MySQL JSON: How to find object from key value

[*] MySQL 8.0 provides JSON_TABLE() to help with cases like this. select field_options.* from fields cross join json_table(fields.options, ‘$[*]’ columns( text text path ‘$.text’, value text path ‘$.value’ ) ) as field_options where field_options.value = 1; +——-+——-+ | text | value | +——-+——-+ | Grass | 1 | +——-+——-+ But you have to do this … Read more

How to search JSON data in MySQL?

If you have MySQL version >= 5.7, then you can try this: SELECT JSON_EXTRACT(name, “$.id”) AS name FROM table WHERE JSON_EXTRACT(name, “$.id”) > 3 Output: +——————————-+ | name | +——————————-+ | {“id”: “4”, “name”: “Betty”} | +——————————-+ Please check MySQL reference manual for more details: https://dev.mysql.com/doc/refman/5.7/en/json-search-functions.html