I have a column that can have results like the following:
ER
ER,ER,ER
ER,ER,OR,OR
OR
OR,OR
OR,OR,OR,ER,ER
I am looking for a way to replace any a string such as "ER,ER,ER,OR,OR" to just "ER,OR". No matter how many times ER or OR show up I just want each displayed only once. Thank you
Create a split function (or search for hundreds of variations on this site):
CREATE FUNCTION [dbo].[SplitStrings_XML]
(
#List NVARCHAR(MAX),
#Delimiter NVARCHAR(255)
)
RETURNS TABLE
WITH SCHEMABINDING
AS
RETURN
(
SELECT Item = y.i.value(N'./text()[1]', N'nvarchar(4000)')
FROM
(
SELECT x = CONVERT(XML, '<i>'
+ REPLACE(#List, #Delimiter, '</i><i>') + '</i>').query('.')
) AS a
CROSS APPLY x.nodes('i') AS y(i)
);
GO
Then you can do this:
DECLARE #x TABLE(foo VARCHAR(32));
INSERT #x SELECT 'ER'
UNION ALL SELECT 'ER,ER,ER'
UNION ALL SELECT 'ER,ER,OR,OR'
UNION ALL SELECT 'OR'
UNION ALL SELECT 'OR,OR'
UNION ALL SELECT 'OR,OR,OR,ER,ER';
;WITH g AS
(
SELECT x.foo, s.Item
FROM #x AS x
CROSS APPLY dbo.SplitStrings_XML(x.foo, ',') AS s
GROUP BY x.foo, s.Item
)
SELECT original = x.foo, new = STUFF((SELECT ',' + Item FROM g
WHERE foo = x.foo GROUP BY Item
FOR XML PATH(''),
TYPE).value(N'./text()[1]', N'nvarchar(max)'), 1, 1, '')
FROM #x AS x;
Results are almost exactly the way you want, except order from the initial string is not preserved:
original new
----------------- ----------
ER ER
ER,ER,ER ER
ER,ER,OR,OR ER,OR
OR OR
OR,OR OR
OR,OR,OR,ER,ER ER,OR
A quick and dirty way would be like this... though it's limited to the example you provide in the question only. Conceptually there are better ways as provided in the comment to your question by KM.
update mytable
set mycolumn =
case when (mycolumn like '%er%' and not mycolumn like '%or%') then 'ER'
when (mycolumn like '%or%' and not mycolumn like '%er%') then 'OR'
when (mycolumn like '%er%' and mycolumn like '%or%') then 'ER,OR' end
Related
CategoryTable
Code Name
1 Food
2 Non-Food
Existing Table Consists list of category, as for example, I have two only Food and Non-Food
As challenge, I am assigning tenants with category or categories (multiple assignment, as there are tenants which are categorized as food and non-food). I i used to insert Tenant and Code to a new table creating this output
TenantAssignTable
Tenant Code
Tenant1 1,2
Tenant2 1
What I need to do, is to load the TenantAssingTable to gridview consisting the Name of the CategoryCode too like this
Desired Output
Tenant CCode Name
Tenant1 1,2 Food,Non-Food
Tenant2 1 Food
I used inner join in my code, but this is limited as I have a string of combined code in Code column.
Select a.tenant, a.ccode, b.name
from TenantAssignTable a inner join CategoryTable b
on a.CCode = b.code
Is there anyway to achieve this kind of output? I know that this is unusual in SQL coding but this is what is challenge as what the desired output is concerned and needs which is to have a multiple assignment of category to a single tenant.
Thanks in advance!
Think simple;
You can with LIKE and XML PATH
DECLARE #CategoryTable TABLE (Code VARCHAR(50), Name VARCHAR(50))
INSERT INTO #CategoryTable
VALUES
('1', 'Food'),
('2', 'Non-Food')
DECLARE #TenantAssignTable TABLE (Tenant VARCHAR(50), Code VARCHAR(50))
INSERT INTO #TenantAssignTable
VALUES
('Tenant1', '1,2'),
('Tenant2', '1')
SELECT
T.Tenant ,
T.Code,
STUFF(
(SELECT
',' + C.Name
FROM
#CategoryTable C
WHERE
',' + REPLACE(T.Code, ' ', '') + ',' LIKE '%,' + C.Code + ',%'
FOR XML PATH('')
), 1, 1, '') A
FROM
#TenantAssignTable T
Result:
Tenant Code A
--------------- ------------ ---------------
Tenant1 1,2 Food,Non-Food
Tenant2 1 Food
You can use some XML transformations:
DECLARE #x xml
SELECT #x = (
SELECT CAST('<t name="'+a.tenant +'"><a>'+REPLACE(a.code,',','</a><a>') +'</a></t>' as xml)
FROM TenantAssignTable a
FOR XML PATH('')
)
;WITH cte AS (
SELECT t.v.value('../#name','nvarchar(max)') as Tenant,
t.v.value('.','int') as CCode,
ct.Name
FROM #x.nodes('/t/a') as t(v)
INNER JOIN CategoryTable ct
ON ct.Code = t.v.value('.','int')
)
SELECT DISTINCT
c.Tenant,
STUFF((SELECT ','+CAST(CCode as nvarchar(10))
FROM cte
WHERE c.Tenant = Tenant
FOR XML PATH('')
),1,1,'') as CCode,
STUFF((SELECT ','+Name
FROM cte
WHERE c.Tenant = Tenant
FOR XML PATH('')
),1,1,'') as Name
FROM cte c
Output:
Tenant CCode Name
Tenant1 1,2 Food,Non-Food
Tenant2 1 Food
The first part (defining #x variable) will bring your table to this kind of XML:
<t name="Tenant1">
<a>1</a>
<a>2</a>
</t>
<t name="Tenant2">
<a>1</a>
</t>
Then in CTE part we join XML with table of categories. And after all get data from CTE with the help of FOR XML PATH.
Create Function as below which return Table from separated Value
CREATE FUNCTION [dbo].[fnSplit]
(
#String NVARCHAR(4000),
#Delimiter NCHAR(1)
)
RETURNS TABLE
AS
RETURN
(
WITH Split(stpos,endpos)
AS(
SELECT 0 AS stpos, CHARINDEX(#Delimiter,#String) AS endpos
UNION ALL
SELECT endpos+1, CHARINDEX(#Delimiter,#String,endpos+1)
FROM Split
WHERE endpos > 0
)
SELECT 'Id' = ROW_NUMBER() OVER (ORDER BY (SELECT 1)),
'Data' = SUBSTRING(#String,stpos,COALESCE(NULLIF(endpos,0),LEN(#String)+1)-stpos)
FROM Split
)
Create Function as below which return comma separated Name
CREATE FUNCTION [dbo].[GetCommaSeperatedCategory]
(
#Codes VARCHAR(50)
)
RETURNS VARCHAR(5000)
AS
BEGIN
-- Declare the return variable here
DECLARE #Categories VARCHAR(5000)
SELECT #Categories= STUFF
(
(SELECT ',' + convert(varchar(10), Name, 120)
FROM Category
WHERE Code IN (SELECT Id FROM [dbo].[fnSplit] (#Codes,',') )
ORDER BY Code
FOR XML PATH (''))
, 1, 1, '')
RETURN #Categories
END
AND Last:
SELECT
Tenant,
Code,
(SELECT [dbo].[GetCommaSeperatedCategory] (Code)) AS Name
FROM TblTenant
I have a string something like
No People,Day,side view,looking at camera,snow,mountain,tranquil scene,tranquility,Night,walking,water,Two Person,looking Down
And I have a table Group_words
Group Category
---------------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------
No People,One Person,Two Person,Three Person,Four Person,five person,medium group of people,large group of people,unrecognizable person,real people People
Day,dusk,night,dawn,sunset,sunrise Weather
looking at camera,looking way,looking sideways,looking down,looking up View Angle
I want to check every comma separated word with table Group_words and find the wrong combination.
For the above string result should be : "No People,Day,side view,looking at camera,snow,mountain,tranquil scene,tranquility,walking,water"
Night is removed because Day is available in the string.
Two Person is removed because No People is available in the string.
looking Down is removed because looking at camera is available in the string.
I know its to complicated but simply I want to remove the not matching words from sting which is available into table Group_words.
Wow, you should be re-designing your tables. Anyway, here is my attempt using Jeff Moden's DelimitedSplit8k.
I believe you now have this function since I answered one of your previous questions that also uses this function.
First, you want to split your #string input into separate rows. You should also split the Group_Words table.
After that you do a LEFT JOIN to get the matching categories. Then you eliminate the invalid words.
See it in action here: SQL Fiddle
DECLARE #string VARCHAR(8000)
SET #string = 'No People,Day,side view,looking at camera,snow,mountain,tranquil scene,tranquility,Night,walking,water,Two Person,looking Down'
-- Split #string variable
DECLARE #tbl_string AS TABLE(ItemNumber INT, Item VARCHAR(8000))
INSERT INTO #tbl_string
SELECT
ItemNumber, LTRIM(RTRIM(Item))
FROM dbo.DelimitedSplit8K(#string, ',')
-- Normalize Group_Words
DECLARE #tbl_grouping AS TABLE(Category VARCHAR(20), ItemNumber INT, Item VARCHAR(8000))
INSERT INTO #tbl_grouping
SELECT
w.Category, s.ItemNumber, LTRIM(RTRIM(s.Item))
FROM Group_Words w
CROSS APPLY dbo.DelimitedSplit8K(w.[Group], ',')s
;WITH Cte AS(
SELECT
s.ItemNumber,
s.Item,
g.category,
RN = ROW_NUMBER() OVER(PARTITION BY g.Category ORDER BY s.ItemNumber)
FROM #tbl_string s
LEFT JOIN #tbl_grouping g
ON g.Item = s.Item
)
SELECT STUFF((
SELECT ',' + Item
FROM Cte
WHERE
RN = 1
OR Category IS NULL
ORDER BY ItemNumber
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'),
1, 1, '')
OUTPUT:
| |
|--------------------------------------------------------------------------------------------------|
| No People,Day,side view,looking at camera,snow,mountain,tranquil scene,tranquility,walking,water |
If your #string input has more than 8000 characters, the DelimitedSplit8K will slow down. You can use other splitters instead. Here is one taken for Sir Aaron Bertrands's article.
CREATE FUNCTION dbo.SplitStrings_XML
(
#List NVARCHAR(MAX),
#Delimiter NVARCHAR(255)
)
RETURNS TABLE
WITH SCHEMABINDING
AS
RETURN
(
SELECT Item = y.i.value('(./text())[1]', 'nvarchar(4000)')
FROM
(
SELECT x = CONVERT(XML, '<i>'
+ REPLACE(#List, #Delimiter, '</i><i>')
+ '</i>').query('.')
) AS a CROSS APPLY x.nodes('i') AS y(i)
);
GO
There are two tables.
One table contains:
Name value
A 1
B 2
C 3
D 4
another table contains
City value
aa 1
bb 2,3
cc 3
dd 1,2,4
I want an output which contains:
City value Name
aa 1 A
bb 2,3 B,C
cc 3 C
dd 1,2,4 A,B,D
How can i do this using cursor?
Thanks. Your question really made me appreciate normal forms.
Anyhow, I am going to go out on a limb and assume you asked for a cursor-based solution because you assumed the non-normalized data could not be handled.
Once you have the function to materialize the rows into a value list, you can solve this with a simple query.
Given:
CREATE TABLE dbo.NV (Name CHAR(1), Value INT)
CREATE TABLE dbo.CV (City varchar(88), ValueList VARCHAR(88))
loaded with the data you indicated.
And this SQL script:
GO
CREATE FUNCTION dbo.f_NVList(#VList VARCHAR(MAX)) RETURNS VARCHAR(MAX)
AS
BEGIN
DECLARE #VAL VARCHAR(928)='',
#FIDescr VARCHAR(55)
SELECT #VAL = COALESCE(#VAL + LTRIM(map.name),'') + ','
FROM dbo.nv Map
WHERE CHARINDEX(','+LTRIM(STR(map.value)) + ',', ','+#VList + ',' ) > 0
SET #VAL = SUBSTRING(#VAL,1,len(#VAL)-1)
RETURN(#VAL)
END
GO -- end of function
-- this generates the output, using the function to materialize the name-values
SELECT cv.* , dbo.f_NVList(cv.ValueList ) as NameList FROM dbo.CV cv;
producing your output:
PLEASE DON'T - but If you really need the cursor for some reason, instead of
SELECT cv.* , dbo.f_NVList(cv.ValueList ) as NameList FROM dbo.CV cv;
use this
OPEN BadIdea;
FETCH NEXT FROM BadIdea INTO #C, #VList
WHILE ##FETCH_STATUS = 0
BEGIN
SET #NameList = dbo.f_NVList(#Vlist)
INSERT INTO #OUT VALUES( #C, #VLIST , #NameList )
FETCH NEXT FROM BadIdea INTO #C, #VList
END
CLOSE BadIdea
DEALLOCATE BadIdea
select * from #OUT ;
Please give a try on this:
;with nv as (
select *
from (values ('A', '1'), ('B', '2'), ('C', '3'), ('D', '4')) a (Name, value))
, cv as (
select *
from (values ('aa', '1'), ('bb', '2,3'), ('cc', '3'), ('dd', '1,2,4')) a(City, value)
)
, cv2 as (
select cv.City
, case when charindex(',',cv.value)>0 then LEFT(cv.value, charindex(',',cv.value)-1) else cv.value end value
, case when charindex(',',cv.value)>0 then right(cv.value, LEN(cv.value)-len(LEFT(cv.value, charindex(',',cv.value)-1)+',')) end leftover
from cv
union all
select cv.City
, case when charindex(',',cv.leftover)>0 then LEFT(cv.leftover, charindex(',',cv.leftover)-1) else cv.leftover end value
, case when charindex(',',cv.leftover)>0 then right(cv.leftover, LEN(cv.leftover)-len(LEFT(cv.leftover, charindex(',',cv.leftover)-1)+',')) end leftover
from cv2 cv
where cv.leftover is not null
)
select *
, stuff((
select ','+nv.Name
from cv2
join nv on nv.value=cv2.value
where cv2.City=cv.City
for xml path('')
), 1, 1, '') Name
from cv
With cv2 I split the values to City, with a recursive CTE. After that I calculate the new Name for each City.
I don't know how fast is on a big table, but I think it is better then cursor.
using CROSS APPLY we will initially delimit all the values and then we can acheieve using XML path () and CTE's
DECLARE #Name table (name varchar(5),value int)
INSERT INTO #Name (name,value)values ('A',1),('B',2),('C',3),('D',4)
DECLARE #City table (city varchar(10),value varchar(10))
INSERT INTO #City (city,value)values ('aa','1'),('bb','2,3'),('cc','3'),('dd','1,2,4')
Code :
;with CTE AS (
SELECT A.city,
Split.a.value('.', 'VARCHAR(100)') AS Data
FROM
(
SELECT city,
CAST ('<M>' + REPLACE(value, ',', '</M><M>') + '</M>' AS XML) AS Data
FROM #City
) AS A CROSS APPLY Data.nodes ('/M') AS Split(a)
),CTE2 AS (
Select c.city,t.value,STUFF((SELECT ', ' + CAST(name AS VARCHAR(10)) [text()]
FROM #Name
WHERE value = c.Data
FOR XML PATH(''), TYPE)
.value('.','NVARCHAR(MAX)'),1,2,' ') List_Output
from CTE C
INNER JOIN #Name t
ON c.Data = t.value
)
select DISTINCT c.city,STUFF((SELECT ', ' + CAST(value AS VARCHAR(10)) [text()]
FROM CTE2
WHERE city = C.city
FOR XML PATH(''), TYPE)
.value('.','NVARCHAR(MAX)'),1,2,' ') As Value ,STUFF((SELECT ', ' + CAST(List_Output AS VARCHAR(10)) [text()]
FROM CTE2
WHERE city = C.city
FOR XML PATH(''), TYPE)
.value('.','NVARCHAR(MAX)'),1,2,' ')As Name from CTE2 C
First, you need a function to split your comma-delimited values. Here is the DelimitedSplit8K written by Jeff Moden and improved by the community. This is regarded as one of the fastest SQL-based string splitter.
You should also read on FOR XML PATH(''), a method to concatenate strings. Check this article by Aaron Bertrand for more information.
SELECT
*
FROM Table2 t2
CROSS APPLY(
SELECT STUFF((
SELECT ',' + Name
FROM Table1
WHERE Value IN(
SELECT CAST(s.Item AS INT) FROM dbo.DelimitedSplit8K(t2.Value, ',') s
)
FOR XML PATH(''), type).value('.', 'VARCHAR(MAX)'
), 1, 1, '')
)x(Name)
SQL Fiddle
Notes:
Make sure to get the latest version of the DelimitedSplit8K.
For other splitter functions, check out this article by Aaron Bertrand.
I have a problem where I want to replace characters
I am using replace function but that is not giving desired output.
Values of column table_value needs to replaced with their fill names like
E - Email
P - Phone
M - Meeting
I am using this query
select table_value,
replace(replace(replace(table_value, 'M', 'MEETING'), 'E', 'EMAIL'), 'P', 'PHONE') required_value
from foobar
so second required_value row should be EMAIL,PHONE,MEETING and so on.
What should I do so that required value is correct?
The below will work (even it's not a smart solution).
select
table_value,
replace(replace(replace(replace(table_value, 'M', 'MXXTING'), 'E', 'XMAIL'), 'P', 'PHONX'), 'X', 'E') required_value
from foobar
You can do it using CTE to split the table values into E, P and M, then replace and put back together.
I assumed each record has a unique identifer Id but please replace that with whatever you have.
;WITH cte
AS
(
SELECT Id, SUBSTRING(table_value, 1, 1) AS SingleValue, 1 AS ValueIndex
FROM replacetable
UNION ALL
SELECT replacetable.Id, SUBSTRING(replacetable.table_value, cte.ValueIndex + 1, 1) AS SingleValue, cte.ValueIndex + 1 AS ValueIndex
FROM cte
INNER JOIN replacetable ON cte.ValueIndex < LEN(replacetable.table_value)
)
SELECT DISTINCT Id,
STUFF((SELECT DISTINCT ','+ CASE SingleValue
WHEN 'E' THEN 'EMAIL'
WHEN 'P' THEN 'PHONE'
WHEN 'M' THEN 'MEETING'
END
FROM cte c
WHERE c.Id = cte.Id
AND SingleValue <> ','
FOR XML PATH ('')),1,1,'')
FROM cte
Sorry , for mess code, maybe this is not best way to solve this, but what I've tried:
SET QUOTED_IDENTIFIER ON
SET ANSI_NULLS ON
GO
CREATE Function [dbo].[fn_CSVToTable]
(
#CSVList Varchar(max)
)
RETURNS #Table TABLE (ColumnData VARCHAR(100))
AS
BEGIN
DECLARE #S varchar(max),
#Split char(1),
#X xml
SELECT #Split = ','
SELECT #X = CONVERT(xml,' <root> <s>' + REPLACE(#CSVList,#Split,'</s> <s>') + '</s> </root> ')
INSERT INTO #Table
SELECT CASE RTRIM(LTRIM(T.c.value('.','varchar(20)'))) WHEN 'M' THEN 'Meeting'
WHEN 'P' THEN 'Phone'
WHEN 'E' THEN 'Email'
End
FROM #X.nodes('/root/s') T(c)
RETURN
END
GO
Then When I run this:
Select Main.table_value,
Left(Main.ColumnData,Len(Main.ColumnData)-1) As ColumnData
From
(
Select distinct tt2.table_value,
(
Select tt1.ColumnData+ ',' AS [text()]
From (
SELECT
*
FROM dbo.TestTable tt
CROSS APPLY dbo.fn_CSVToTable(tt.table_value)
) tt1
Where tt1.table_value = tt2.TABLE_value
ORDER BY tt1.table_value
For XML PATH ('')
) ColumnData
From dbo.TestTable tt2
) [Main]
I get this:
table_value ColumnData
-------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
E,P Email,Phone
E,P,M Email,Phone,Meeting
P,E Phone,Email
P,M Phone,Meeting
(4 row(s) affected)
You could also use a DECODE or CASE to translate the values.
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.