Looking for multiples substrings within a SQL string - sql

Question

I have several occurrences of differences strings in the columns, like this example
'dsasdasdsd'+'ewewewew'+'45454545'+(avg('uuuuuuu'))
I need to split this string into several columns with the substrings that are between
aphostropes
like this:
Column 1 = dsasdasdsd
Column 2 = ewewewew
Column 3 = 45454545
Column 4 = uuuuuuu
The numbers of apperances are random, thefore the length of the original column is also not fixed (from 50 char to > 1000)

Answer 1

DECLARE #InStr VarChar(1000) = '''dsasdasdsd''+''ewewewew''+''45454545''+(avg(''uuuuuuu''))'''
DECLARE #intStart INT = 0
DECLARE #intEnd INT = 1
DECLARE #ColNo INT = 1
DECLARE #MyString VARCHAR(2000)
DECLARE #SelectString VARCHAR(8000) = 'SELECT '
WHILE(#intStart < LEN(#InStr) )
BEGIN
SELECT #intStart = CHARINDEX(CHAR(39), #InStr, 0) + 1
SELECT #intEnd = CHARINDEX(CHAR(39), #InStr, #intStart)
SELECT #SelectString = #SelectString + CHAR(39) + SUBSTRING(#InStr, #intStart, #intEnd - #intStart) + CHAR(39) + ' As [Column ' + CAST(#ColNo As Varchar) + '],'
SELECT #InStr = SUBSTRING(#InStr, #intEnd + 1, LEN(#InStr)-#intEnd )
SET #ColNo = #ColNo +1
END
SELECT #SelectString = LEFT(#SelectString, Len(#SelectString) -1)
EXEC (#SelectString)
I have been playing with this and this does run but unfortunately I don't have time right now to carry on with it but maybe you can improve on this?
HTH

Answer 2

You can try this:
create table tSqlStrings (sText nvarchar(1000))
insert tSqlStrings values('''dsasdasdsd''+''ewewewew''+''45454545''+(avg(''uuuuuuu''))')
create table tResults (
sColumn1 nvarchar(1000)
,sColumn2 nvarchar(1000)
,sColumn3 nvarchar(1000)
,sColumn4 nvarchar(1000)
)
and
DELETE tResults
DECLARE #sText nvarchar(1000) = (
SELECT
sText
FROM
tSqlStrings
)
DECLARE #lBegin int = CHARINDEX('''',#sText)
DECLARE #lEnd int = charindex('''',
substring(#sText,
CHARINDEX('''',#sText)+1,
len(#sText)))
DECLARE #sText0 nvarchar(1000)
DECLARE #sColumn1 nvarchar(1000)
DECLARE #sColumn2 nvarchar(1000)
DECLARE #sColumn3 nvarchar(1000)
DECLARE #sColumn4 nvarchar(1000)
DECLARE #iCnt int = 1
while #iCnt<=4
--(0<len(#sText) and 0<#lBegin and 0<#lEnd)
BEGIN
SET #sText0 = substring(#sText,#lBegin+1,#lEnd-2)
IF #iCnt=1 begin SET #sColumn1=#sText0 end
IF #iCnt=2 begin SET #sColumn2=#sText0 end
IF #iCnt=3 begin SET #sColumn3=#sText0 end
IF #iCnt=4 begin SET #sColumn4=#sText0 end
set #sText = substring(#sText,#lBegin + #lEnd+2,len(#sText))
SET #lBegin = CHARINDEX('''',#sText)
SET #lEnd = charindex('''',
substring(#sText,
CHARINDEX('''',#sText)+1,
len(#sText)))
SET #iCnt = #iCnt+1
END
INSERT
tResults (sColumn1,sColumn2,sColumn3,sColumn4)
VALUES (#sColumn1,#sColumn2,#sColumn3,#sColumn4)
SELECT * FROM tResults
on sql fiddle

Answer 3

You will be able to achieve this using CHARINDEX() and SUBSTRING()
Following example shows for splitting to 2 columns. When it has more columns, query will be get little more complicated. However, you can follow this to build your query.
SELECT OriginalColumn
, SUBSTRING(OriginalColumn, 1,CHARINDEX('x',OriginalColumn,1)-1) AS Column1
, SUBSTRING(OriginalColumn, CHARINDEX('x',OriginalColumn,1) + 1 ,CHARINDEX('x',OriginalColumn,CHARINDEX('x',OriginalColumn,1)-1)) AS Column2
FROM YourTable
I have used "x" as the delimiter in the example. Following is a sample result

Answer 4

try this:
declare #delim char
set #delim = ''''
declare #str nvarchar(max)
declare #substr nvarchar(max)
declare #newstr nvarchar(max)
declare #tmpTable table (partStrings nvarchar(max))
declare #count int
set #count = 0
select #str = <***Your String***>
while(charindex(#delim,#str) != 0)
begin
set #count = #count + 1
Select #substr = substring(#str,1,charindex(#delim,#str)-1)
if((#count % 2) = 0)
begin
insert into #tmpTable values(#substr)
end
Set #newstr = substring(#str,charindex(#delim,#str)+1,len(#str)-charindex(#delim,#str))
set #str = #newstr
end
select partStrings from #tmpTable