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MySQL query to display all the fields that contain a capital letter?
To display all the fields that contain a capital letter, use the RLIKE that performs a pattern match of a string expression against a pattern.
Let us first create a table −
mysql> create table contains_capital_letterDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(100) -> ); Query OK, 0 rows affected (1.42 sec)
Following is the query to insert some records in the table using insert command −
mysql> insert into contains_capital_letterDemo(Name) values('Larry'); Query OK, 1 row affected (0.17 sec) mysql> insert into contains_capital_letterDemo(Name) values('larry'); Query OK, 1 row affected (0.12 sec) mysql> insert into contains_capital_letterDemo(Name) values('john'); Query OK, 1 row affected (0.13 sec) mysql> insert into contains_capital_letterDemo(Name) values('JOHN'); Query OK, 1 row affected (0.36 sec) mysql> insert into contains_capital_letterDemo(Name) values('mike'); Query OK, 1 row affected (0.14 sec) mysql> insert into contains_capital_letterDemo(Name) values('Mike'); Query OK, 1 row affected (0.27 sec)
Following is the query to display all records from the table using select statement −
mysql> select * from contains_capital_letterDemo;
This will produce the following output −
+----+-------+ | Id | Name | +----+-------+ | 1 | Larry | | 2 | larry | | 3 | john | | 4 | JOHN | | 5 | mike | | 6 | Mike | +----+-------+ 6 rows in set (0.00 sec)
Following is the query to display all the fields that contain a capital letter −
mysql> select * from contains_capital_letterDemo WHERE CAST(Name AS BINARY) RLIKE '[A-Z]';
This will produce the following output −
+----+-------+ | Id | Name | +----+-------+ | 1 | Larry | | 4 | JOHN | | 6 | Mike | +----+-------+ 3 rows in set (0.00 sec)
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