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HenryFulmer
Posting Yak Master
110 Posts |
 Posted - 2012-09-30 : 10:17:35
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Is it possible that I set the table name from which I want to select as a variable?DECLARE @table varchar(800)SET @table = RIGHT(CAST(MONTH(CURRENT_TIMESTAMP) AS VARCHAR),2)SELECT Column1, Column3, Column5 FROM @table I would like to always select the table based on the month value.Any help is appreciated. |
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sunitabeck
Master Smack Fu Yak Hacker
5155 Posts |
Posted - 2012-09-30 : 18:31:21
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| SQL Server does not allow that syntax. You would have to use dynamic SQL (which would come with the baggage of SQL injection risk).If you are still in the design stages and if you have a say in the design, instead of creating table names with the month as part of the table name, create a single table with another column that has the datestamp. That would make querying and managing the data much much easier. |
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Mike Jackson
Starting Member
37 Posts |
Posted - 2012-10-01 : 08:46:35
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| DECLARE @table varchar(800)DECLARE @sql varchar(800)SET @table = RIGHT(CAST(MONTH(CURRENT_TIMESTAMP) AS VARCHAR),2)set @sql = 'SELECT Column1, Column3, Column5 FROM ' + @tableprint @sqlexecute (@sql)dynamic SQL often does have an SQL injection risk but this particular code would not be exposed to the user so it should be safe.Mike |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2012-10-01 : 10:42:37
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| do you mean you maintain a different table for each month for same data format? I would have opted to keep them in same table with an additional column(date or month) to designate month value. In case the table is huge, You can always make use partitioning to partition table based on date and put partitions onto different file groups------------------------------------------------------------------------------------------------------SQL Server MVPhttp://visakhm.blogspot.com/ |
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retrieve table name