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2009/10/5 -What you want is COUNT(DISTINCT <expression>) : evaluates expression for each row in a group and returns the number of unique, non-null values.
By using the COUNT() function with the DISTINCT keyword, we can count the number of unique countries. Example. SELECT COUNT(DISTINCT Country) FROM Customers;.
2021/1/5 -SELECT COUNT(DISTINCT Column1) FROM Table;. The distinct count will be based off the column in parenthesis. The result set should only be one ...
2024/9/23 -To count values in the specific column, simply write its name in the function's parentheses. SELECT COUNT(column_1) AS column_alias FROM table;.
2026/11/2 -USE ssawPDW; SELECT COUNT(DISTINCT Title) FROM dbo.DimEmployee;. Here's the result set. Output. Copy.
2026/2/16 -COUNT() function with distinct clause. In SQL, the COUNT() function is used to count the number of rows that match a specified condition.
The COUNT DISTINCT function returns the number of unique values in the column or expression, as the following example shows. SELECT COUNT (DISTINCT item_num) ...
2025/7/21 -Real examples of COUNT DISTINCT · Monthly active users · Products sold by each vendor · Routes an airline flies · Customers by the price of what ...
Here is the SQL code with count distinct for both columns. SELECT P.Yr ,P.YrMnth ,P.Market ,P.AType ,P.Groups ,P.Code ,P.Classification ,P.CType ,P.ServCategory
2026/6/4 -COUNT DISTINCT. Count unique values. This function returns the number of distinct, non-NULL values found in the specified column or expression.