Sql distinct one column

DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. This will work with only one registered mail as well. You have selected the distinct column in the subquery but the where clause gets all those columns with that value. You can use an order by clause in select statement with distinct on multiple columns.

I have a query which uses three lookup tables to get all the information I need. The syntax varies between vb. I need to select one of each version in the data (using the code field) while keeping all the columns in the final output.

I am selecting distinct on a code field but I cannot figure how to return the rest of the columns. Ask Question Asked years, months ago. Active years, months ago. How do you query for three unique customers with the largest Purchase_Cost? There have been numerous times I have wanted to do this, but have not found an easy way.

You will need another identifier, like an insert date or something. Now, we have only one NULL value included in the result set. The following will make all three columns. How can I select all fields with a distinct on only one field of that table?

SQL COUNT( ) with All. Guys, how do i make the following only bring back one value for each REGNO? As you can see some of then are bring back in the total column ? It may be one or more. Select Distinct shows the same.

We can count during aggregation using GROUP BY to make distinct when needed after the select statement to show the data with counts. Remember that you must include. This is a simple question : I want to create a table selecting distinct observations from an existing table based on combination of three columns but I want to retain. Max of CColumn record should be fine.

Aus der Formulierung Ihrer Frage verstehe ich, dass Sie die verschiedenen Werte für ein bestimmtes Feld auswählen und für jeden solchen Wert. Basically I am wanting to be distinct on one row, but view different rows. Can anyone show me the sql statement to do this.

In a much easier way of telling it. I am trying to find the distinct values of column A, then the values in column B will be summed up. Hello, How to get distinct rows based on only one column ? I have tried distinct and group by but none of them working.

Example: I have three columns (col col col3). Distinct is ran on the selected columns after records are found (all joins are evaluated and columns are retrieved), so when using distinct it should not be possible to get duplicates (across all columns ), no matter what you do. If the selected columns result in duplicate rows, they will be removed.

When the query is selecting the rows it discards any row which is a duplicate of any other row already selected by the query. EXISTS You can use the EXISTS predicate in conjunction with a subquery to determine whether the subquery returns.