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Old August 30th, 2007, 12:34 PM
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Default Nested Loops in SQL Query values from table/set

Nested Loops in SQL Query with values fetched from table/set

I am a newbie SQL programmer. I need to know the syntax/example for using nested loops with condition values fetched from a table/group of fixed values etc.

The SQL Query needs creates an XML file for each combination of 3 parameters District, Month, RepType.

District values need be fetched from a table “district” and column “dist_code”. The dist_code is of type “tinyint” and its value is between 1-70.

Month values can be either fetched from a table or a fixed set. Its value is from 1-12. The table is “month” and the column name is “stat_month”. The stat_month is of type char(2).

RepType values are 1-11 need to be fetched from a fixed set.

The SQL query is below (with hard coded parameter values)
*************Begin Code************
USE test

Declare @TblName1 varchar(10)
Declare @District varchar(6)
Declare @Month varchar(3)
Declare @RepType varchar(2)

SET @TblName1 = '2006exp'
SET @District = 21
SET @Month = 6
SET @RepType = 2

Declare @fName varchar(50)
SET @fName = 'C:\XMLDump\'+@TblName1+'-'+@District+'-'+@Month+'-'+@Reptype+'.xml'

SET @TblName1 = '['+@TblName1+']'

Declare @SQuery nvarchar(3000)

Set @SQuery = 'bcp "EXEC test..free_CustomsDistrict_HS4_TEST '+@TblName1+', '+@District+', '+@Month+', '+@RepType+'" QueryOut "' + @fName + '" -c -T -r -t'

Exec master..xp_cmdshell @SQuery
************End Code*************
When I execute this query, it creates a file “2006exp-21-6-2.xml”.

The need the query to create 46x12x11 = 6072 files for all the combinations of 3 parameters.

Old August 31st, 2007, 12:35 AM
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Asked and fully answered here

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