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    <p>You are going to need to use dynamic SQL to figure out which columns you want to display, unless you know the full set of possible nationality values.</p> <pre><code>DECLARE @start DATETIME, @end DATETIME; SET @start = '20120802'; SET @end = '20120802'; DECLARE @sql NVARCHAR(MAX); SET @sql = N'SELECT Room_No, Study_Date, Male = SUM(CASE WHEN Student_Sex = ''Male'' THEN 1 ELSE 0 END), Female = SUM(CASE WHEN Student_Sex = ''Female'' THEN 1 ELSE 0 END)'; SELECT @sql = @sql + CHAR(13) + CHAR(10) + ',' + Nationality + ' = SUM(CASE WHEN Nationality = ''' + Nationality + ''' THEN 1 ELSE 0 END)' FROM dbo.vStudent WHERE Nationality IS NOT NULL GROUP BY Nationality; SET @sql = @sql + ' FROM dbo.vStudent WHERE Study_Date &gt;= ''' + CONVERT(CHAR(8), @start, 112) + ''' AND Study_Date &lt; ''' + CONVERT(CHAR(8), DATEADD(DAY, 1, @end), 112) + ''' GROUP BY Room_No, Study_Date;'; EXEC sp_executesql @sql; </code></pre> <p>If the set of nationalities is known, then you can simply say:</p> <pre><code>SELECT Room_No, Study_Date, Male = SUM(CASE WHEN Student_Sex = 'Male' THEN 1 ELSE 0 END), Female = SUM(CASE WHEN Student_Sex = 'Female' THEN 1 ELSE 0 END), Cambodian = SUM(CASE WHEN Nationality = 'Cambodian' THEN 1 ELSE 0 END), Chinese = SUM(CASE WHEN Nationality = 'Chinese' THEN 1 ELSE 0 END), Thailand = SUM(CASE WHEN Nationality = 'Thailand' THEN 1 ELSE 0 END) -- continue other nationalities here FROM dbo.vStudent WHERE Study_Date &gt;= @start AND Study_Date &lt; DATEADD(DAY, 1, @end) GROUP BY Room_No, Study_Date; </code></pre> <p>You could probably do this a little more elegantly with <code>PIVOT</code>, but it really depends on your definition of "elegant." See the <a href="http://msdn.microsoft.com/en-us/library/ms177410%28v=sql.90%29.aspx" rel="nofollow">docs here</a>.</p>
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    1. COThanks, full set of nationality is known. it was limited. anyway when I execute it error: Msg 102, Level 15, State 1, Line 4 Incorrect syntax near '='. (1 row(s) affected)
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    2. COIs it possible you have any NULL values for nationality?
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    3. COI tried the second proc; it worked. many thanks Aaron Bertand.
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