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How to find all uppercase strings in a MySQL table?
To find all upper case strings in a MySQL table, you need to use BINARY UPPER() function. The syntax is as follows:
SELECT *FROM yourTableName WHERE yourColumnName=BINARY UPPER(yourColumnName);
To understand the above syntax, let us create a table. The query to create a table is as follows:
mysql> create table FindUpperCaseDemo -> ( -> Id int, -> FirstName varchar(20), -> Age int -> ); Query OK, 0 rows affected (1.04 sec)
Insert some records in the table using insert command. The query is as follows:
mysql> insert into FindUpperCaseDemo values(1,'John',23); Query OK, 1 row affected (0.17 sec) mysql> insert into FindUpperCaseDemo values(2,'CAROL',21); Query OK, 1 row affected (0.29 sec) mysql> insert into FindUpperCaseDemo values(3,'JoHN',23); Query OK, 1 row affected (0.11 sec) mysql> insert into FindUpperCaseDemo values(4,'JOHN',26); Query OK, 1 row affected (0.22 sec) mysql> insert into FindUpperCaseDemo values(5,'sAM',26); Query OK, 1 row affected (0.18 sec) mysql> insert into FindUpperCaseDemo values(6,'SAM',28); Query OK, 1 row affected (0.18 sec) mysql> insert into FindUpperCaseDemo values(7,'MIKE',29); Query OK, 1 row affected (0.17 sec) mysql> insert into FindUpperCaseDemo values(8,'BOB',20); Query OK, 1 row affected (0.45 sec) mysql> insert into FindUpperCaseDemo values(9,'LARRY',22); Query OK, 1 row affected (0.39 sec) mysql> insert into FindUpperCaseDemo values(10,'LARRy',22); Query OK, 1 row affected (0.14 sec)
Display all records from the table using select statement. The query is as follows:
mysql> select *from FindUpperCaseDemo;
The following is the output:
+------+-----------+------+ | Id | FirstName | Age | +------+-----------+------+ | 1 | John | 23 | | 2 | CAROL | 21 | | 3 | JoHN | 23 | | 4 | JOHN | 26 | | 5 | sAM | 26 | | 6 | SAM | 28 | | 7 | MIKE | 29 | | 8 | BOB | 20 | | 9 | LARRY | 22 | | 10 | LARRy | 22 | +------+-----------+------+ 10 rows in set (0.00 sec)
Here is the query to find all uppercase strings in a MySQL table:
mysql> select *from FindUpperCaseDemo where FirstName=BINARY UPPER(FirstName);
The following is the output:
+------+-----------+------+ | Id | FirstName | Age | +------+-----------+------+ | 2 | CAROL | 21 | | 4 | JOHN | 26 | | 6 | SAM | 28 | | 7 | MIKE | 29 | | 8 | BOB | 20 | | 9 | LARRY | 22 | +------+-----------+------+ 6 rows in set (0.09 sec)
Updated on: 30-Jul-2019
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