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SQL SELECT DISTINCT

The SQL DISTINCT command is used with SELECT key word to retrieve only distinct or unique data.

In a table, there may be a chance to exist a duplicate value and sometimes we want to retrieve only unique values. In such scenarios, SQL SELECT DISTINCT statement is used.

Note: SQL SELECT UNIQUE and SQL SELECT DISTINCT statements are same.

Let’s see the syntax of select distinct statement.

  1. SELECT DISTINCT column_name ,column_name
  2. FROM  table_name;

Let’s try to understand it by the table given below:

Student_Name Gender Mobile_Number HOME_TOWN
Rahul Ojha Male 1234567890 Lucknow
Disha Rai Female 9876543210 Varanasi
Sonoo Jaiswal Male 1234543210 Lucknow

Here is a table of students from where we want to retrieve distinct information For example: distinct home-town.

  1. SELECT DISTINCT home_town
  2. FROM students

Now, it will return two rows.

HOME_TOWN
Lucknow
Varanasi
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