T-SQL How to convert comma separated string of numbers to integer

Question

I get the error \"Conversion failed when converting the nvarchar value \'23,24,3,45,91,\' to data type int.\" The error seems to be occuring on the ON clause. E.ID is an int

Answer 1

Using xml datatype, you can explode your string to integers like this. Good candidate for a user defined function I would say :-)

declare @test varchar(max)

set @test = '1,2,3,4,5'

select 
     T2.item.value('(./text())[1]','int') 
from
     (select convert(xml,''+replace(@test,',','')+'') as xmldoc)
as xmltable
     CROSS APPLY xmltable.xmldoc.nodes('/items/t') as T2(item)