Asked by: Preston Bordonada
asked in category: General Last Updated: 29th February, 2020

How do I run a distinct query in SQL?

  1. SELECT DISTINCT returns only distinct (different) values.
  2. SELECT DISTINCT eliminates duplicate records from the results.
  3. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc.
  4. DISTINCT operates on a single column. DISTINCT for multiple columns is not supported.

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Keeping this in view, how does distinct work in SQL?

Introduction to SQL Server SELECT DISTINCT clause The query returns only distinct values in the specified column. In other words, it removes the duplicate values in the column from the result set. In other words, the DISTINCT clause treats all NULL “values” as the same value.

Also Know, how do I select multiple distinct columns in SQL? DISTINCT on multiple columns

  1. Sample Select statement.
  2. Select with distinct on two columns.
  3. Select with distinct on three columns.
  4. Select with distinct on all columns of the first query.
  5. Select with distinct on multiple columns and order by clause.
  6. Count() function and select with distinct on multiple columns.

can we use count and distinct together in SQL?

Yes, you can use COUNT() and DISTINCT together to display the count of only distinct rows. SELECT COUNT(DISTINCT yourColumnName) AS anyVariableName FROM yourTableName; To understand the above syntax, let us create a table. Display all records from the table using select statement.

How can I get unique records without using distinct in SQL?

The same result can be achieved without using the DISTINCT keyword, as below.

  1. SELECT col, COUNT(*) FROM.
  2. (SELECT col, other_col FROM tab GROUP BY col, other_col) t.
  3. GROUP BY col.

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