Can you SUM distinct?

Can you SUM distinct?

DISTINCT instructs the SUM() function to calculate the sum of the only distinct values. expression is any valid expression that returns an exact or approximate numeric value. Note that aggregate functions or subqueries are not accepted in the expression.

Can we use distinct in case statement?

In general whenever we have to use ‘distinct’ clause along with case statement, it always resides outside the case statement unless we are using a sub-query in the case statement. If we put ‘distinct’ clause inside case statement, we will get ora-00936, missing expression error.

Can we use SUM in case statement?

A CASE WHEN expression is often used with a SUM() function in more complex reports, which can be quite challenging for beginners. Even though you’re probably used to using the SUM() function for summing values, it can also be used for counting.

Can we use aggregate function in case statement?

The CASE statement can also be used in conjunction with the GROUP BY statement in order to apply aggregate functions. In the script above we use the COUNT aggregate function with the CASE statement.

How do you sum distinct values in tableau?

How to calculate sum of distinct values in Tableau?

1. SUM() – this function will sum the result of the expression.
2. {FIXED [ProductID],[DueDate]: – here we indicate the level of detail you can use any other in your data.
3. AVG([OrderQty]) – averaging within each ProductID and DueDate will eliminate the duplicates in your sum.

What does SELECT distinct do in SAS?

DISTINCT. eliminates duplicate rows. A row is considered a duplicate when all of its values are the same as the values of another row. The DISTINCT argument applies to all columns in the SELECT list.

How do you write a case statement in SAS?

A CASE expression returns a single value that is conditionally evaluated for each row of a table (or view). Use the WHEN-THEN clauses when you want to execute a CASE expression for some but not all of the rows in the table that is being queried or created.

When to use distinct count in select case in SQL?

If your “case” variable is unique, you can certainly put the distinct keyword in the SQL CASE syntax directly: Count(distinct CASE when yearsold between 6 and 12 then case else null end) That way, each unique value of the case variable is counted only once.

When to use distinct keyword in select case?

Active Oldest Votes. 9. If your “case” variable is unique, you can certainly put the distinct keyword in the SQL CASE syntax directly: Count (distinct CASE when yearsold between 6 and 12 then case else null end) That way, each unique value of the case variable is counted only once.

When to use case when with sum ( )?

There’s no “Poor result” category anymore. Instead, there are NULL values. Remember: when the rows don’t match any of the conditions defined, the CASE statement will return NULL values. If you want to delve more into the syntax, this very thorough article on the CASE WHEN logic could be quite helpful.

How is unique value of case variable counted?

That way, each unique value of the case variable is counted only once. Just a note on column naming, I would suggest not using a word that has meaning in SQL if you have a choice (I.e. use ‘case_num’ instead of case).