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How to structure some data in a MySQL database for easier retrieval?
You can use FIND_IN_SET to structure some data in a database for easier retrieval. Let us first create a table −
mysql> create table DemoTable
(
CountryName SET('US','UK','AUS')
);
Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −
mysql> insert into DemoTable values('US');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('UK');
Query OK, 1 row affected (0.09 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+ | CountryName | +-------------+ | US | | UK | +-------------+ 2 rows in set (0.00 sec)
Following is the query to fetch a value −
mysql> select *from DemoTable where find_in_set('UK',CountryName) > 0;This will produce the following output −
+-------------+ | CountryName | +-------------+ | UK | +-------------+ 1 row in set (0.00 sec)
Updated on: 03-Oct-2019
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