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SQL LCASE Function

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The LCASE function converts the fields value into the lowercase.

SQL LCASE Function

     

The LCASE function converts the fields value into the lowercase.

Understand with Example

The Tutorial illustrate an example from SQL L CASE Function. In order to understand the concept of SQL L CASE Function, we create a table name Stu_Table. The create statement helps you to create a table Stu_Table.

Create Table Stu_Table

SQL statement to create table:

create table Stu_Table(Stu_Id varchar(2), Stu_Name varchar(15), 
Stu_Class  varchar(10),sub_id varchar(2),marks varchar(3));

Insert Data into Stu_Table

The insert into insert records, rows to the Table' Stu_Table'.

SQL statement to insert data into table:

insert into Stu_Table values(1,'Komal',10,1,45);
insert into Stu_Table values(2,'Ajay',10,1,56);
insert into Stu_Table values(3,'Rakesh',10,1,67);

insert into Stu_Table values(1,'Komal',10,2,47);
insert into Stu_Table values(2,'Ajay',10,2,53);
insert into Stu_Table values(3,'Rakesh',10,2,57);

insert into Stu_Table values(1,'Komal',10,3,45);
insert into Stu_Table values(2,'Ajay',10,3,56);
insert into Stu_Table values(3,'Rakesh',10,3,67);

insert into Stu_Table values(1,'Komal',10,4,65);
insert into Stu_Table values(2,'Ajay',10,4,56);
insert into Stu_Table values(3,'Rakesh',10,4,37);

insert into Stu_Table values(1,'Komal',10,5,65);
insert into Stu_Table values(2,'Ajay',10,5,46);
insert into Stu_Table values(3,'Rakesh',10,5,63);

Stu_Table

Records in the table:

+--------+----------+-----------+--------+-------+
| Stu_Id | Stu_Name | Stu_Class | sub_id | marks |
+--------+----------+-----------+--------+-------+
| 1      | Komal    | 10        | 1      | 45    |
| 2      | Ajay     | 10        | 1      | 56    |
| 3      | Rakesh   | 10        | 1      | 67    |
| 1      | Komal    | 10        | 2      | 47    |
| 2      | Ajay     | 10        | 2      | 53    |
| 3      | Rakesh   | 10        | 2      | 57    |
| 1      | Komal    | 10        | 3      | 45    |
| 2      | Ajay     | 10        | 3      | 56    |
| 3      | Rakesh   | 10        | 3      | 67    |
| 1      | Komal    | 10        | 4      | 65    |
| 2      | Ajay     | 10        | 4      | 56    |
| 3      | Rakesh   | 10        | 4      | 37    |
| 1      | Komal    | 10        | 5      | 65    |
| 2      | Ajay     | 10        | 5      | 46    |
| 3      | Rakesh   | 10        | 5      | 63    |
+--------+----------+-----------+--------+-------+

Query

The SQL Query want to select the content of the "stu_id" and "stu_name", column above ,and convert the "stu_name" column to lowercase.

select stu_id, lcase(stu_name)
from stu_table group by stu_id;

Result

+--------+----------+
| stu_id | stu_name |
+--------+----------+
| 1      | komal    |
| 2      | ajay     |
| 3      | rakesh   |
+--------+----------+
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Posted on: December 20, 2008

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