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December 12, 2015 09:19
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Gets the full domain of an attribute from a relation.
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| if exists | |
| ( | |
| select * | |
| from sys.objects | |
| where object_id = OBJECT_ID(N'[dbo].[getAttributeDomain]') | |
| ) | |
| begin | |
| drop procedure dbo.getAttributeDomain | |
| end | |
| go | |
| create procedure dbo.getAttributeDomain | |
| @table varchar(max), | |
| @column varchar(max), | |
| @outputString varchar(max) OUTPUT | |
| as | |
| /* Here's what's up | |
| Written By: Doug Wade | |
| On: 2013-03-04 | |
| Does: gets a comma-delimited string of all distinct values in a column. | |
| */ | |
| if OBJECT_ID(@table) is null or @column = '' | |
| begin | |
| return | |
| end | |
| declare @statement nvarchar(max) = N'select distinct ' + cast(@column as nvarchar) + N' from ' + cast(@table as nvarchar) | |
| declare @concatTable table | |
| ( | |
| valueToConcatenate varchar(max) | |
| ) | |
| insert into @concatTable | |
| execute sp_executesql @statement | |
| declare @counter int = 0 | |
| declare attributeCursor cursor | |
| for | |
| select valueToConcatenate | |
| from @concatTable | |
| declare @nextAttributeValue varchar(max) | |
| open attributeCursor | |
| fetch next from attributeCursor into @nextAttributeValue | |
| while (@@FETCH_STATUS <> -1) --cursor has reached the end of the array | |
| begin | |
| if @counter = 0 | |
| begin | |
| set @outputString = @nextAttributeValue | |
| end | |
| else | |
| begin | |
| set @outputString = @outputString + ',' + @nextAttributeValue | |
| end | |
| set @counter = @counter+1 | |
| fetch next from attributeCursor into @nextAttributeValue | |
| end | |
| close attributeCursor | |
| deallocate attributeCursor |
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