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POSql Server Query Date Issue
 

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  1. POSql Server Query Date Issue
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    <p>This executes correctly: (It is weird that I needed to use '' by the date for it to actually execute)</p> <pre><code>DECLARE @cols AS NVARCHAR(MAX), @query AS NVARCHAR(MAX); select @cols = STUFF((SELECT distinct ',' + QUOTENAME(c.statcolumnname) FROM [85137_PHY_Long_PG] c FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,1,'') set @query = 'SELECT statdate, ' + @cols + ' from ( select statdate, statcolumnname, statcolumnvalue from [85137_PHY_Long_PG] ) x pivot ( min(statcolumnvalue) for statcolumnname in (' + @cols + ') ) p WHERE statdate BETWEEN ''2012-04-01 12:15:00'' AND ''2012-04-01 12:45:00'' ORDER BY statdate' execute(@query) </code></pre> <p>Now I want to replace the dates with variables:</p> <pre><code>DECLARE @cols AS NVARCHAR(MAX), @query AS NVARCHAR(MAX), @from AS NVARCHAR(MAX), @to AS NVARCHAR(MAX); set @from = '2012-04-01 12:15:00' set @to = '2012-04-01 12:45:00' select @cols = STUFF((SELECT distinct ',' + QUOTENAME(c.statcolumnname) FROM [85137_PHY_Long_PG] c FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,1,'') set @query = 'SELECT statdate, ' + @cols + ' from ( select statdate, statcolumnname, statcolumnvalue from [85137_PHY_Long_PG] ) x pivot ( min(statcolumnvalue) for statcolumnname in (' + @cols + ') ) p WHERE statdate BETWEEN ''+@from+'' AND ''+@to+'' ORDER BY statdate' execute(@query) </code></pre> <p>I get the following error:<strong>Conversion failed when converting character string to smalldatetime data type</strong></p> <p>Changing the where statement to the following:</p> <pre><code>WHERE statdate BETWEEN ''+convert(smalldatetime,@from)+'' AND ''+convert(smalldatetime,@to)+'' ORDER BY statdate' </code></pre> <p>Still gives me the same error, just can't seem to replace the dates as variables</p>
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    1. USThomas
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    1. COYou're missing one set of apostrophes.
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    2. COI have tried it multiple ways to no avail, the sp_executesql seems to work quite well
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