'Select query where exists intersection of two list
I have one table that contains two columns:
id (integer)
list_colum (longtext)
- contains json array (e.g. [1, 2, 3])
I want to select all records that have an intersection of my input list.
Let me explain:
My input is a list - [2, 3]
Pseudo code:
SELECT *
FROM table
WHERE intersection of [2, 3] and table.list_column is not empty list;
Is it possible to do this in SQL?
I am using the newest version of MariaDB.
Solution 1:[1]
Edit: The answer doesn't give a true intersection: it only checks if the given JSON array is the intersection and not whether there is an intersection between it and the stored value.
JSON_CONTAINS
should work:
MariaDB [(none)]> SET @json = '[1,2,3,4,5,6]';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> SELECT JSON_CONTAINS(@json, '[1, 3, 5]');
+-----------------------------------+
| JSON_CONTAINS(@json, '[1, 3, 5]') |
+-----------------------------------+
| 1 |
+-----------------------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> SELECT JSON_CONTAINS(@json, '[1, 2, 3]');
+-----------------------------------+
| JSON_CONTAINS(@json, '[1, 2, 3]') |
+-----------------------------------+
| 1 |
+-----------------------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> SELECT JSON_CONTAINS(@json, '[7]');
+-----------------------------+
| JSON_CONTAINS(@json, '[7]') |
+-----------------------------+
| 0 |
+-----------------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> SELECT JSON_CONTAINS(@json, '[5, 6, 7]');
+-----------------------------------+
| JSON_CONTAINS(@json, '[5, 6, 7]') |
+-----------------------------------+
| 0 |
+-----------------------------------+
1 row in set (0.00 sec)
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
Solution | Source |
---|---|
Solution 1 |