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Retrieve from MySQL only if it contains two hyphen symbols?
For this, use the LIKE operator. Let us first create a table:
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Password varchar(100) ); Query OK, 0 rows affected (1.27 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(Password) values('John@--123');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable(Password) values('---Carol234');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable(Password) values('--David987');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable(Password) values('Mike----53443');
Query OK, 1 row affected (0.30 sec)
Display all records from the table using select statement:
mysql> select *from DemoTable;
Output
+----+---------------+ | Id | Password | +----+---------------+ | 1 | John@--123 | | 2 | ---Carol234 | | 3 | --David987 | | 4 | Mike----53443 | +----+---------------+ 4 rows in set (0.00 sec)
Following is the query to retrieve from MySQL if it only contains two hyphen symbols -
mysql> select *from DemoTable where Password like '%--%' and password not like '%---%';
Output
+----+------------+ | Id | Password | +----+------------+ | 1 | John@--123 | | 3 | --David987 | +----+------------+ 2 rows in set (0.06 sec)
Updated on: 2019-07-30T22:30:26+05:30
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