How do I sort by distinct in SQL?

How do I sort by distinct in SQL?

If we add the DISTINCT operation, it would be added between SELECT and ORDER BY :

1. FROM MonitoringJob.
2. SELECT Category, CreationDate.
3. DISTINCT.
4. ORDER BY CreationDate DESC.
5. SELECT Category.

How do you sort the results of an SQL query?

The ORDER BY statement in sql is used to sort the fetched data in either ascending or descending according to one or more columns.

1. By default ORDER BY sorts the data in ascending order.
2. We can use the keyword DESC to sort the data in descending order and the keyword ASC to sort in ascending order.

How can I get distinct data?

SQL SELECT DISTINCT Explanation SELECT DISTINCT returns only unique (i.e. distinct) values. SELECT DISTINCT eliminates duplicate values from the results. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. DISTINCT operates on a single column.

Can we use distinct in ORDER BY?

Without a transformation, a statement that contains both DISTINCT and ORDER BY would require two separate sorting steps-one to satisfy DISTINCT and one to satisfy ORDER BY. (Currently, Derby uses sorting to evaluate DISTINCT. There are, in theory, other ways to accomplish this.)

What does order by do in SQL?

The SQL ORDER BY Keyword The ORDER BY keyword is used to sort the result-set in ascending or descending order. The ORDER BY keyword sorts the records in ascending order by default. To sort the records in descending order, use the DESC keyword.

What is the use of distinct keyword?

The DISTINCT keyword is used to fetch distinct records from a database table. The DISTINCT clause is basically used to remove duplicates from the result set of a SELECT statement and only selects DIFFERENT values.

Is there a way to order by distinct in SQL?

SELECT Category i.e. remove the extended sort key column again from the result. So, thanks to the SQL standard extended sort key column feature, it is totally possible to order by something that is not in the SELECT clause, because it is being temporarily added to it behind the scenes. So, why doesn’t this work with DISTINCT?

How to use distinct in same SELECT statement?

Distinct will sort records in ascending order. If you want to sort in desc order use: If you want to sort records based on CreationDate field then this field must be in the select statement: Try next, but it’s not useful for huge data… Thanks for contributing an answer to Stack Overflow!

How to use order by in same SELECT statement?

Extended sort key columns. 1 FROM MonitoringJob. 2 SELECT Category, CreationDate i.e. add a so called extended sort key column. 3 ORDER BY CreationDate DESC. 4 SELECT Category i.e. remove the extended sort key column again from the result.

How to remove duplicates from a result set in SQL?

The primary key ensures that the table has no duplicate rows. However, when you use the SELECT statement to query a portion of the columns in a table, you may get duplicates. To remove duplicates from a result set, you use the DISTINCT operator in the SELECT clause as follows: SELECT DISTINCT column1, column2, FROM table1;