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In SQL I want to add 0 in front and , at the end of each character.
Example: A30F1 -> 0A,03,00,0F,01
I don't want to use cursor if possible.
Thanks!
EIDT:
I apologize for not asking the most appropriate question at the beginning.
In short, I have a table and for each value in the column name I have to convert it to the desired format. For example, we have a #Temp table:
CREATE TABLE #Temp (id INT, name VARCHAR(25))
INSERT INTO #Temp VALUES (1, 'A30F1'), (2, 'B51R9'), (3, 'L1721')
SELECT * FROM #Temp
One method would be to use a Tally to split the string into it's individual characters, and then use concatenation to add the 0 to the start, and STRING_AGG to comma delimit the results:
DECLARE #YourValue varchar(5) = 'A30F1';
WITH N AS(
SELECT N
FROM (VALUES(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL))N(N)),
Tally AS(
SELECT TOP (LEN(#YourValue))
ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) AS I
FROM N N1, N N2) --Up to 100 characters, add more cross joins for more characters
SELECT STRING_AGG(CONCAT('0',SS.C),',') WITHIN GROUP (ORDER BY T.I) AS NewString
FROM (VALUES(#YourValue))V(YourValue)
CROSS JOIN Tally T
CROSS APPLY (VALUES(SUBSTRING(V.YourValue,T.I,1)))SS(C);
It appears this is meant to be against a table, not a single value. This needs, however, very few changes to work against a table:
WITH N AS(
SELECT N
FROM (VALUES(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL))N(N)),
Tally AS(
SELECT TOP (SELECT MAX(LEN(YourColumn)) FROM dbo.YourTable)
ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) AS I
FROM N N1, N N2) --Up to 100 characters, add more cross joins for more characters
SELECT STRING_AGG(CONCAT('0',SS.C),',') WITHIN GROUP (ORDER BY T.I) AS NewString
FROM dbo.YourTable YT
JOIN Tally T ON LEN(YT.YourColumn) >= T.I
CROSS APPLY (VALUES(SUBSTRING(YT.YourColumn,T.I,1)))SS(C)
GROUP BY YT.YourColumn;
db<>fiddle
I solved the simplest possible with a few variables, WHILE and SUBSTRING
DECLARE #var VARCHAR(20) = 'A30F1', #i INT = 1, #res NVARCHAR(20)
WHILE (#i <= LEN(#var))
BEGIN
SET #res = #res + '0' + SUBSTRING(#var, #i, 1) + ','
SET #i = #i + 1
END
SELECT LEFT(#res, LEN(#res) - 1) output
Check demo on DB<>FIDDLE.
Original answer:
A recursive CTE and a STRING_AGG() call is also an option (SQL Server 2017+ is needed):
DECLARE #text varchar(max) = 'A30F1';
WITH rCTE AS
(
SELECT 1 AS CharacterPosition, SUBSTRING(#text, 1, 1) AS Character
UNION ALL
SELECT CharacterPosition + 1, SUBSTRING(#text, CharacterPosition + 1, 1)
FROM rCTE
WHERE CharacterPosition < LEN(#text)
)
SELECT STRING_AGG('0' + Character, ',') WITHIN GROUP (ORDER BY CharacterPosition)
FROM rCTE
OPTION (MAXRECURSION 0);
Update:
You need a different statement, if the names are stored in a table, again using recursion and STRING_AGG():
Table:
CREATE TABLE #Temp (id INT, name VARCHAR(25))
INSERT INTO #Temp VALUES (1, 'A30F1'), (2, 'B51R9'), (3, 'L1721')
Statement:
; WITH rCTE AS (
SELECT
t.id AS id,
LEFT(t.name, 1) AS Character,
STUFF(t.name, 1, 1, '') AS CharactersRemaining,
1 AS CharacterPosition
FROM #Temp t
UNION ALL
SELECT
r.id,
LEFT(r.CharactersRemaining, 1),
STUFF(r.CharactersRemaining, 1, 1, ''),
CharacterPosition + 1
FROM rCTE r
WHERE LEN(r.CharactersRemaining) > 0
)
SELECT
id,
STRING_AGG('0' + Character, ',') WITHIN GROUP (ORDER BY CharacterPosition) AS name
FROM rCTE
GROUP BY id
OPTION (MAXRECURSION 0);
Result:
id name
1 0A,03,00,0F,01
2 0B,05,01,0R,09
3 0L,01,07,02,01
If you are only applying this to English alphabet characters and digits as in your example you could do this.
CREATE TABLE #Temp (id INT, name VARCHAR(25))
INSERT INTO #Temp VALUES (1, 'A30F1'), (2, 'B51R9'), (3, 'L1721'), (4, 'A')
SELECT SUBSTRING(REPLACE(
0x00 + CAST(CAST(name AS NVARCHAR(25)) AS BINARY(50)), CHAR(0), '0,')
, 3
, LEN(name) * 3 - 1)
FROM #Temp
returns
0A,03,00,0F,01
0B,05,01,0R,09
0L,01,07,02,01
0A
This takes advantage of the fact that the binary representation of the nvarchar and varchar is the same for this limited character set except for padding out with 0x00
'A30F1' -> 0x4133304631
N'A30F1' -> 0x41003300300046003100
There are some objects encoded as key:value strings and stored in a table, I'd like to increase sequence number of all objects, which is one field in the object.
For example:
ID Value
--------------------------
504 s:0;d:n;e:test;
506 s:1;d:y;e:branch;
507 s:2;d:y;e:;
I'd like to change them to:
ID Value
--------------------------
504 s:1;d:n;e:test;
506 s:2;d:y;e:branch;
507 s:3;d:y;e:;
Is there a simple way to do this?
Is there a simple way to do this?
No not really.
You can find the positions of s: and d: and then use that to extract the number inbetween, increase it by one and stuff it back into where it belongs.
declare #T table
(
ID int,
Value varchar(50)
);
insert into #T values
(504, 's:0;d:n;e:test;'),
(506, 's:1;d:y;e:branch;'),
(507, 's:2;d:y;e:;');
select T.ID,
stuff(T.Value, P.S, P.D - P.S - 1, S.Value) as NewValue
from #T as T
cross apply (values(charindex('s:', T.Value) + 2,
charindex('d:', T.Value))) as P(S, D)
cross apply (values(substring(T.Value, P.S, P.D - P.S - 1) + 1)) as S(Value)
A version where you find the ; after s: instead of d: as suggested by Eric in a comment.
select T.ID,
stuff(T.Value, S.Pos, SEnd.Pos - S.Pos, V.NewValue) as NewValue
from #T as T
cross apply (values(charindex('s:', T.Value) + 2)) as S(Pos)
cross apply (values(charindex(';', T.Value, S.Pos))) as SEnd(Pos)
cross apply (values(substring(T.Value, S.Pos, SEnd.Pos - S.Pos) + 1)) as V(NewValue)
DECLARE #val nvarchar(200)
SET #val = 's:1;d:y;e:branch;'
SELECT 's:' + CONVERT(nvarchar(100), CONVERT(INT, SUBSTRING(#val, charindex(':', #val) + 1, charindex(';', #val) - charindex(':', #val) -1)) + 1) + SUBSTRING(#val, charindex(':', #val),1000)
You can use what's in the SELECT's query in an UPDATE statement to change the table values
Using the split string functions from here:Split strings the right way – or the next best way
declare #string varchar(max)
set #string='504 s:0;d:n;e:test;'
;with cte as(select * from
[dbo].[SplitStrings_Numbers]
(#string,':'))
select b.item+1 from cte c
cross apply
(select * from [dbo].[SplitStrings_Numbers](c.item,';')) b
where isnumeric(b.item)=1
This accounts for empty or non-integer values; it will ignore them in the event they can't be incremented by one.
-- Build Test Data
IF OBJECT_ID('tempdb..#test') IS NOT NULL DROP TABLE #test
CREATE TABLE #test (ID INT, Value VARCHAR(100))
INSERT #test
VALUES
(504,'s:0;d:n;e:test;'),
(506,'s:1;d:y;e:branch;'),
(507,'s:2;d:y;e:;'),
(508,'s:;d:y;e:;'),
(509,'s:xyz;d:y;e:;');
-- Update S: values
WITH sVals AS
(
SELECT ID, Value, TRY_PARSE(SUBSTRING(Value,CHARINDEX('s:',Value)+2,CHARINDEX(';',Value,CHARINDEX('s:',Value))-(CHARINDEX('s:',Value)+2)) AS INT) AS sVal
FROM #test AS t
)
UPDATE s
SET Value = IIF(sVal IS NOT NULL, STUFF(Value,CHARINDEX('s:',Value)+2,CHARINDEX(';',Value,CHARINDEX('s:',Value))-(CHARINDEX('s:',Value)+2),sVal+1), Value)
FROM sVals AS s
-- Check the results
SELECT *
FROM #test
You can as the below:
DECLARE #val VARCHAR(100) = 's:12;d:n;e:test;'
SELECT REPLACE(#val, ':' + SUBSTRING(#val, 3, PATINDEX('%;d:%', #val) - 3) + ';', ':' + CAST(SUBSTRING(#val, 3, PATINDEX('%;d:%', #val) - 3)+ 1 AS VARCHAR(MAX)) + ';')
Result: s:13;d:n;e:test;
I got a table Test with columns A and B.
The A column contains different values in one entry, e.g. abc;def;ghi, all separated by ;. And the B column contains numeric values, but only one.
What I want is to seperate the values from column A into multiple rows.
So:
abc;def;ghi;jkl
-->
abc
def
ghi
jkl
In column B is one value, e.g. 20 and I want that value split to the amount of rows,
So the final result shut be:
abc 5
def 5
ghi 5
jkl 5
The issue is that the amount of values in column A must be variable.
First you need to create this function
REATE FUNCTION Split
(
#delimited nvarchar(max),
#delimiter nvarchar(100)
) RETURNS #t TABLE
(
-- Id column can be commented out, not required for sql splitting string
id int identity(1,1), -- I use this column for numbering splitted parts
val nvarchar(max),
origVal nvarchar(max)
)
AS
BEGIN
declare #xml xml
set #xml = N'<root><r>' + replace(#delimited,#delimiter,'</r><r>') + '</r></root>'
insert into #t(val,origval)
select
r.value('.','varchar(max)') as item, #delimited
from #xml.nodes('//root/r') as records(r)
RETURN
END
GO
then this query might help
Select x.Val, test.B / (len(test.A) - len(replace(Test.A, ';', '')) + 1) from Test
inner join dbo.Split(Test.A,';') x on x.origVal = Test.A
this part len(test.A) - len(replace(Test.A, ';', '')) will count the number of ; in string
Be aware this query might have some malfunctioning if there will be duplicate strings in A column, in this situation you need to pass the unique value (for example ID) to split function and return it in the result table, then join it by this value (ie. x.origVal = Test.A => x.origID = Test.ID)
You can use some tricks with CTE, STUFF and windows functions
DECLARE #t TABLE
(
ID INT ,
A NVARCHAR(MAX) ,
B INT
)
INSERT INTO #t
VALUES ( 1, 'a;b;c;d;', 20 ),
( 2, 'x;y;z;', 40 );
WITH cte ( ID, B, D, A )
AS ( SELECT ID ,
B ,
LEFT(A, CHARINDEX(';', A + ';') - 1) ,
STUFF(A, 1, CHARINDEX(';', A + ';'), '')
FROM #t
UNION ALL
SELECT ID ,
B ,
LEFT(A, CHARINDEX(';', A + ';') - 1) ,
STUFF(A, 1, CHARINDEX(';', A + ';'), '')
FROM cte
WHERE A > ''
)
SELECT ID ,
B ,
D,
CAST(B AS DECIMAL) / COUNT(*) OVER (PARTITION BY ID) AS Portion
FROM cte
Output:
ID B D Portion
1 20 a 5.00000000000
1 20 b 5.00000000000
1 20 c 5.00000000000
1 20 d 5.00000000000
2 40 x 13.33333333333
2 40 y 13.33333333333
2 40 z 13.33333333333
this an example how you can achieve required result
DECLARE #table AS TABLE
(
ColumnA VARCHAR(100) ,
ColumnB FLOAT
)
INSERT INTO #table
( ColumnA, ColumnB )
VALUES ( 'abc;def;ghi;jkl', 20 ),
( 'asf;ret;gsd;jas', 30 ),
( 'dfa;aef;gffhi;fjfkl', 40 );
WITH C AS ( SELECT n = 1
UNION ALL
SELECT n + 1
FROM C
WHERE n <= 100
),
SetForSplit
AS ( SELECT T.ColumnA ,
T.ColumnB ,
C.n ,
( CASE WHEN LEFT(SUBSTRING(T.ColumnA, n, 100), 1) = ';'
THEN SUBSTRING(T.ColumnA, n + 1, 100) + ';'
ELSE SUBSTRING(T.ColumnA, n, 100) + ';'
END ) AS SomeText
FROM #table AS T
JOIN C ON C.n <= LEN(T.ColumnA)
WHERE SUBSTRING(T.ColumnA, n, 1) = ';'
OR n = 1
)
SELECT ROW_NUMBER() OVER ( PARTITION BY columnA ORDER BY LEFT(SomeText,
CHARINDEX(';',
SomeText) - 1) ) AS RowN,
LEFT(SomeText, CHARINDEX(';', SomeText) - 1) AS ColA ,
ColumnB / COUNT(*) OVER ( PARTITION BY ColumnA ) AS ColB
FROM SetForSplit
ORDER BY ColumnA
This is full working exmaple:
DECLARE #DataSource TABLE
(
[A] VARCHAR(MAX)
,[B] INT
);
INSERT INTO #DataSource ([A], [B])
VALUES ('a;b;c;d', 20 ),
('x;y;z', 40 );
SELECT T.c.value('.', 'VARCHAR(100)')
,[B] / COUNT([B]) OVER (PARTITION BY [B])
FROM #DataSource
CROSS APPLY
(
SELECT CONVERT(XML, '<t>' + REPLACE([A], ';', '</t><t>') + '</t>')
) DS([Bxml])
CROSS APPLY [Bxml].nodes('/t') AS T(c)
and of couse you can ROUND the devision as you like.
I have the following table:
Object Field Values
------------------------------------
1 1 A;A;A;B;A;A
2 1 A;B;C;C
2 2 X
3 1 X;Y;Z
3 2 V;V;V;V;V;V;V;V;V;V;V
How can I select from this table only the unique values from the concatenated values? So:
Object Field Values
---------------------
1 1 A;B
2 1 A;B;C
2 2 X
3 1 X;Y;Z
3 2 V
In any scripting language, I would loop through the values from Values, explode on ; and loop through that array with some logic filtering out duplicates. However, I need to do this only using SQL (Server 2008).
Can anybody tell me if and how this can be done?
Any help is greatly appreciated :-)
To do this first create a split function. This is the one I use but if you search the internet (or even SO) for "SQL Server Split Function" you will find a number of alternatives if you don't like this:
ALTER FUNCTION [dbo].[Split](#StringToSplit NVARCHAR(MAX), #Delimiter NCHAR(1))
RETURNS TABLE
AS
RETURN
(
SELECT ID = ROW_NUMBER() OVER(ORDER BY n.Number),
Position = Number,
Value = SUBSTRING(#StringToSplit, Number, CHARINDEX(#Delimiter, #StringToSplit + #Delimiter, Number) - Number)
FROM ( SELECT TOP (LEN(#StringToSplit) + 1) Number = ROW_NUMBER() OVER(ORDER BY a.object_id)
FROM sys.all_objects a
CROSS JOIN sys.all_objects b
) n
WHERE SUBSTRING(#Delimiter + #StringToSplit + #Delimiter, n.Number, 1) = #Delimiter
);
Then you can split your field, So running:
SELECT t.Object, t.Field, s.Value
FROM T
CROSS APPLY dbo.Split(t.[Values], ';') AS s
Will turn this:
Object Field Values
------------------------------------
1 1 A;A;A;B;A;A
into:
Object Field Values
------------------------------------
1 1 A
1 1 A
1 1 A
1 1 B
1 1 A
1 1 A
Then you can apply the DISTINCT Operator:
SELECT DISTINCT t.Object, t.Field, s.Value
FROM T
CROSS APPLY dbo.Split(t.[Values], ';') AS s;
To give:
Object Field Values
------------------------------------
1 1 A
1 1 B
Then you can concatenate your rows back into a single column giving a final query:
SELECT t.Object, t.Field, [Values] = STUFF(x.value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM T
CROSS APPLY
( SELECT DISTINCT ';' + s.Value
FROM dbo.Split(t.[Values], ';') AS s
FOR XML PATH(''), TYPE
) AS s (x)
SQL Fiddle appears to be down, but once you have the Split function created the below is a full working example:
CREATE TABLE #T (Object INT, Field INT, [Values] VARCHAR(MAX));
INSERT #T
VALUES
(1, 1, 'A;A;A;B;A;A'),
(2, 1, 'A;B;C;C'),
(2, 2, 'X'),
(3, 1, 'X;Y;Z'),
(3, 2, 'V;V;V;V;V;V;V;V;V;V;V');
SELECT t.Object, t.Field, [Values] = STUFF(x.value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM #T AS T
CROSS APPLY
( SELECT DISTINCT ';' + s.Value
FROM dbo.Split(t.[Values], ';') AS s
FOR XML PATH(''), TYPE
) AS s (x);
EDIT
Based on your comment that you can't create tables or modify the DDL, I thought I would account for the situation where you can't create a function either. You can expand the above split function out into your query, so you don't actually need to create a function:
CREATE TABLE #T (Object INT, Field INT, [Values] VARCHAR(MAX));
INSERT #T
VALUES
(1, 1, 'A;A;A;B;A;A'),
(2, 1, 'A;B;C;C'),
(2, 2, 'X'),
(3, 1, 'X;Y;Z'),
(3, 2, 'V;V;V;V;V;V;V;V;V;V;V');
SELECT t.Object,
t.Field,
[Values] = STUFF(x.value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM #T AS T
CROSS APPLY
( SELECT DISTINCT ';' + SUBSTRING(t.[Values], Number, CHARINDEX(';', t.[Values] + ';', Number) - Number)
FROM ( SELECT TOP (LEN(t.[Values]) + 1) Number = ROW_NUMBER() OVER(ORDER BY a.object_id)
FROM sys.all_objects a
CROSS JOIN sys.all_objects b
) n
WHERE SUBSTRING(';' + t.[Values] + ';', n.Number, 1) = ';'
FOR XML PATH(''), TYPE
) AS s (x);
Here is a standalone solution:
DECLARE #t table(Object int, Field int, [Values] varchar(max))
INSERT #t values
(1, 1, 'A;A;A;B;A;A'),
(2, 1, 'A;B;C;C'),
(3, 1, 'X'),
(4, 1, 'X;Y;Z'),
(5, 1, 'V;V;V;V;V;V;V;V;V;V;V')
SELECT t.Object, t.Field, x.[NewValues]
FROM #t t
CROSS APPLY
(
SELECT STUFF((
SELECT distinct ';'+t.c.value('.', 'VARCHAR(2000)') value
FROM (
SELECT x = CAST('<t>' +
REPLACE([Values], ';', '</t><t>') + '</t>' AS XML)
) a
CROSS APPLY x.nodes('/t') t(c)
for xml path(''), type
).value('.', 'varchar(max)'), 1, 1, '') [NewValues]
) x
Result:
Object Field NewValues
1 1 A;B
2 1 A;B;C
3 1 X
4 1 X;Y;Z
5 1 V
According to #GarethD's comment this may perform slow.
Test data:
create table #t(Object int identity(1,1), Field int, [Values] varchar(max))
INSERT #t values
(1, 'A;A;A;B;A;A'),(1, 'A;B;C;C'), (1, 'X'), (1, 'X;Y;Z'),(1, 'V;V;V;V;V;V;V;V;V;V;V')
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
insert #t select field, [values] from #t union all select field, [values] from #t union all select field, [values] from #t
Performance testing my script:
SELECT t.Object, t.Field, x.[NewValues]
FROM #t t
CROSS APPLY
(
SELECT STUFF((
SELECT distinct ';'+t.c.value('.', 'VARCHAR(2000)') value
FROM (
SELECT x = CAST('<t>' +
REPLACE([Values], ';', '</t><t>') + '</t>' AS XML)
) a
CROSS APPLY x.nodes('/t') t(c)
for xml path(''), type
).value('.', 'varchar(max)'), 1, 1, '') [NewValues]
) x
Result less than 1 sec.
Performance testing Garath script
(had to edit testdata to get all rows. Identical rows were considered as 1 row):
WITH CTE AS
( SELECT DISTINCT t.Object, t.Field, s.Value
FROM #T AS T
CROSS APPLY
( SELECT ID = ROW_NUMBER() OVER(ORDER BY n.Number),
Position = Number,
Value = SUBSTRING(t.[Values], Number, CHARINDEX(';', t.[Values] + ';', Number) - Number)
FROM ( SELECT TOP (LEN(t.[Values]) + 1) Number = ROW_NUMBER() OVER(ORDER BY a.object_id)
FROM sys.all_objects a
CROSS JOIN sys.all_objects b
) n
WHERE SUBSTRING(';' + t.[Values] + ';', n.Number, 1) = ';'
) AS s
)
SELECT Object,
Field,
[Values] = STUFF((SELECT ';' + Value
FROM CTE AS T2
WHERE T2.Object = T.Object
AND T2.Field = T.Field
FOR XML PATH(''), TYPE
).value('.', 'VARCHAR(MAX)'), 1, 1, '')
FROM CTE AS T
GROUP BY Object, Field;
Result 6 seconds
If any row has null in values this script will also crash.
Just as a Scalar Value Function alternative without the CTE...
ALTER FUNCTION [SplitRemoveDupes] (
#String VARCHAR(MAX)
,#Delimiter VARCHAR(5)
)
RETURNS VARCHAR(MAX)
AS
BEGIN
DECLARE #SplitLength INT
DECLARE #DedupedValues VARCHAR(MAX)
DECLARE #SplittedValues TABLE
(
OccurenceId SMALLINT IDENTITY(1,1),
SplitValue VARCHAR(200)
)
WHILE LEN(#String) > 0
BEGIN
SELECT #SplitLength = (
CASE CHARINDEX(#Delimiter, #String)
WHEN 0
THEN LEN(#String)
ELSE CHARINDEX(#Delimiter, #String) - 1
END
)
INSERT INTO #SplittedValues
SELECT SUBSTRING(#String, 1, #SplitLength)
SELECT #String = (
CASE (LEN(#String) - #SplitLength)
WHEN 0
THEN ''
ELSE RIGHT(#String, LEN(#String) - #SplitLength - 1) END)
END
SET #DedupedValues=(SELECT DISTINCT STUFF((
SELECT DISTINCT (#Delimiter + SplitValue)
FROM #SplittedValues s
ORDER BY (#Delimiter + SplitValue)
FOR XML PATH('')
), 1, 1, '') AS a
FROM #SplittedValues ss)
RETURN #DedupedValues
END
Call it inline...
SELECT Object, Field, [dbo].[SplitRemoveDupes](Values,';') From Table
I have a bit of a tricky situation. I have a column that contains a pipe delimited set of numbers in numerous rows in a table. For example:
Courses
-------------------
1|2
1|2|3
1|2|8
10
11
11|12
What I want to achieve is to return rows where the number only appears once in my output.
Ideally, I want to try and carry this out using SQL rather than having to carry out checks at a web application level. Carrying out a DISTINCT does not achieve what I want.
The desired output would be:
Courses
-------------------
1
2
3
8
10
11
12
I would appreciated if anyone can guide me in the right direction.
Thanks.
Please try:
declare #tbl as table(Courses nvarchar(max))
insert into #tbl values
('1|2'),
('1|2|3'),
('1|2|8'),
('10'),
('11'),
('11|12')
select * from #tbl
SELECT
DISTINCT CAST(Split.a.value('.', 'VARCHAR(100)') AS INT) AS CVS
FROM
(
SELECT CAST ('<M>' + REPLACE(Courses, '|', '</M><M>') + '</M>' AS XML) AS CVS
FROM #tbl
) AS A CROSS APPLY CVS.nodes ('/M') AS Split(a)
ORDER BY 1
Try this one -
SET NOCOUNT ON;
DECLARE #temp TABLE
(
string VARCHAR(500)
)
DECLARE #Separator CHAR(1)
SELECT #Separator = '|'
INSERT INTO #temp (string)
VALUES
('1|2'),
('1|2|3'),
('1|2|8'),
('10'),
('11'),
('11|12')
-- 1. XML
SELECT p.value('(./s)[1]', 'VARCHAR(500)')
FROM (
SELECT field = CAST('<r><s>' + REPLACE(t.string, #Separator, '</s></r><r><s>') + '</s></r>' AS XML)
FROM #temp t
) d
CROSS APPLY field.nodes('/r') t(p)
-- 2. CTE
;WITH a AS
(
SELECT
start_pos = 1
, end_pos = CHARINDEX(#Separator, t.string)
, t.string
FROM #temp t
UNION ALL
SELECT
end_pos + 1
, CHARINDEX(#Separator, string, end_pos + 1)
, string
FROM a
WHERE end_pos > 0
)
SELECT d.name
FROM (
SELECT
name = SUBSTRING(
string
, start_pos
, ABS(end_pos - start_pos)
)
FROM a
) d
WHERE d.name != ''
Try this :
create table course (courses varchar(100))
insert into course values('1|2')
insert into course values('1|2|3')
insert into course values('1|2|8')
insert into course values('10')
insert into course values('11')
insert into course values('11|12')
Declare #col varchar(200)
SELECT
#col=(
SELECT DISTINCT c.courses + '|'
FROM course c
FOR XML PATH('')
);
select * from course
;with demo as(
select cast(substring(#col,1,charindex('|',#col,1)-1) AS INT) cou,charindex('|',#col,1) pos
union all
select cast(substring(#col,pos+1,charindex('|',#col,pos+1)-pos-1)AS INT) cou,charindex('|',#col,pos+1) pos
from demo where pos<LEN(#col))
select distinct cou from demo
Could not manage without recursion :( Something like this could do the trich?
WITH splitNum(num, r)
AS
(
SELECT
SUBSTRING(<field>,1, CHARINDEX('|', <field>)-1) num,
SUBSTRING(<field>,CHARINDEX('|', <field>)+1, len(<field>)) r
FROM <yourtable> as a
UNION ALL
SELECT
SUBSTRING(r,1, CHARINDEX('|', r)-1) num,
SUBSTRING(r,CHARINDEX('|', r)+1, len(r)) r
FROM <yourtable> b
WHERE CHARINDEX('|', r) > 0
inner join splitNum as c on <whatevertheprimarykeyis>
)
SELECT distinct num FROM splitNum
Didn't make it run, but it should do the trick, just replace the and with the correct info
One way would be to use a recursive CTE:
with cte as
(select cast(case charindex('|',courses) when 0 then courses
else left(courses,charindex('|',courses)-1) end as int) course,
case charindex('|',courses) when 0 then ''
else right(courses,len(courses)-charindex('|',courses)) end courses
from courses
union all
select cast(case charindex('|',courses) when 0 then courses
else left(courses,charindex('|',courses)-1) end as int) course,
case charindex('|',courses) when 0 then ''
else right(courses,len(courses)-charindex('|',courses)) end courses
from cte
where len(courses)>0)
select distinct course from cte
SQLFiddle here.