Passing dynamic select values to cursor in SQL (cursor usage) - sql

Question

I'm new to cursors,
How should I write my below code in cursor to pass column value to variable #str
Basically #str in below code is taking static value, need to pass table column values
DECLARE #str VARCHAR(1000),
#str1 VARCHAR(1000),
#str2 VARCHAR(1000),
#pos INT,
#counter INT
SET #str = '45 | 00055 | 9/30/2016 | Vodafone | Randy Singh | Newyork | Test Msg | TBL101 | PC | 1.00 | COMP101 | CS | 1.00.............. etc'
(Here i need to pass table column value like--- select name from Order so every time it takes new value)
--select #str = temp FROM OrderTemp
SET #counter = 0
SET #pos = 0
WHILE #counter <= 6
BEGIN
SET #pos = CHARINDEX('|', #str, #pos + 1)
SET #counter = #counter + 1
END
SET #str1 = SUBSTRING(#str, 1, #pos)
SET #str2 = SUBSTRING(#str, #pos+1, LEN(#str)-#pos)
insert into OrderInterface (name)(SELECT #str2)
insert into OrderInterface (Id)(SELECT #str1)
Input
#str :-- '45 | 00055 | 9/30/2016 | Vodafone | Randy Singh | Newyork | Test Msg | TBL101 | PC | 1.00 | COMP101 | CS | 1.00.............. etc'
Now i need to pass Input value from table like : Select name from tablename instead of static values.
Ouput
#str1 :-- '45 | 00055 | 9/30/2016 | Vodafone | Randy Singh | Newyork | Test Msg'
#str2 :-- 'TBL101 | PC | 1.00 | COMP101 | CS | 1.00.............. etc'

Answer 1

OK, Assuming #Temp looks something like this:
Then we can do the following:
;with cte as (
Select A.RN,B.*
From (Select *,RN = Row_Number() over(Order By (Select NULL)) From #Temp) A
Cross Apply [dbo].[udf-Str-Parse](A.Temp,' | ') B
)
-- Insert Into OrderInterface (Name,ID)
Select Name = (Select String1=Stuff((Select ' | ' + RetVal From cte Where RN=A.RN and RetSeq<=7 For XML Path ('')),1,3,'') )
,ID = (Select String1=Stuff((Select ' | ' + RetVal From cte Where RN=A.RN and RetSeq>7 For XML Path ('')),1,3,'') )
From cte A
Group By A.RN
Which Returns
The UDF if Needed
CREATE FUNCTION [dbo].[udf-Str-Parse] (#String varchar(max),#Delimiter varchar(10))
Returns Table
As
Return (
Select RetSeq = Row_Number() over (Order By (Select null))
,RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>'+ Replace(#String,#Delimiter,'</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
);
--Select * from [dbo].[udf-Str-Parse]('Dog,Cat,House,Car',',')
--Select * from [dbo].[udf-Str-Parse]('John Cappelletti was here',' ')

Answer 2

I think what you are trying to do is find the 6th element in a string deliminated by |.
If that is the case you should not use a loop (as is always the case in SQL) instead in SQL Server you can use the STRING_SPLIT function (https://msdn.microsoft.com/en-us/library/mt684588.aspx) like this:
SELECT value
FROM STRING_SPLIT(#sql, ' | ')
OFFSET ROWS 5 FETCH FIRST 1 ROW ONLY