Prompt
NewCustomers :=
CALCULATE (
DISTINCTCOUNT ( Sales[CustomerID] ),
FILTER (
ALL ( Sales ),
Sales[CustomerID]
IN CALCULATETABLE (
VALUES ( Sales[CustomerID] ),
FILTER (
ALL ( Sales[Date] ),
Sales[Date] <= MAX ( Sales[Date]) && Sales[SalesAmount] > 0
)
)
)
)
Answer
The given DAX code can be translated to SQL as follows:
SELECT COUNT(DISTINCT CustomerID) AS NewCustomers
FROM Sales
WHERE CustomerID IN (
SELECT DISTINCT CustomerID
FROM Sales
WHERE Date <= (SELECT MAX(Date) FROM Sales)
AND SalesAmount > 0
)
Explanation:
- The outer
SELECT
statement is used to calculate the distinct count of customer IDs, which will be the result of the NewCustomers calculation. - The
FROM
clause specifies the Sales table. - The
WHERE
clause filters the rows based on the condition that the CustomerID is included in the subquery. - The subquery selects distinct CustomerIDs from the Sales table where the Date is less than or equal to the maximum date in the Sales table and the SalesAmount is greater than 0.
Note:
- The SQL translation assumes that the Sales table has columns CustomerID, Date, and SalesAmount.
- The subquery in SQL ensures that only distinct CustomerIDs are included in the final count, similar to the DISTINCTCOUNT function in DAX.
- The ALL function in DAX is replaced with the subquery to retrieve all rows from the Sales table in SQL.
Description
The provided DAX code is translated into SQL to calculate the count of new customers. The SQL query selects all distinct CustomerIDs from the Sales table where the Date is less than or equal to the maximum date in the Sales table and the SalesAmount is greater than 0. The outer query then calculates the distinct count of CustomerIDs, which represents the number of new customers. This translation assumes that the Sales table has columns for CustomerID, Date, and SalesAmount.
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