Related
I have a variable #a='1,2,3,4' and a table that contain a column B that contain comma separated values.
How can I check that column B values contain any of the #a variable values?
You need to implement a function for splitting the values. There are a lot of variations, you can use this:
CREATE FUNCTION [dbo].[fn_Analysis_ConvertCsvListToNVarCharTableWithOrder](#List nvarchar(max), #Delimiter nvarchar(10) = ',')
RETURNS #result TABLE
(
[Value] nvarchar(max),
[SortOrder] bigint NOT NULL
)
AS
BEGIN
IF #Delimiter is null
BEGIN
SET #Delimiter = ','
END
DECLARE #XML xml = N'<r><![CDATA[' + REPLACE(#List, #Delimiter, ']]></r><r><![CDATA[') + ']]></r>'
DECLARE #BufTable TABLE (Value nvarchar(max), SortOrder bigint NOT NULL IDENTITY(1, 1) PRIMARY KEY)
INSERT INTO #BufTable (Value)
SELECT Tbl.Col.value('.', 'nvarchar(max)')
FROM #xml.nodes('//r') Tbl(Col)
OPTION (OPTIMIZE FOR (#xml = NULL))
INSERT INTO #result (Value, SortOrder)
SELECT Value, SortOrder
FROM #BufTable
RETURN
END
Having such function, its pretty easy:
DECLARE #DataSource TABLE
(
[column] VARCHAR(1024)
);
DECLARE #column VARCHAR(1024) = '1,2,3,4';
INSERT INTO #DataSource ([column])
VALUES ('100,200,300')
,('100,1,500')
,('1,2,3,500')
,('200')
,('33,32,31,4,30');
SELECT DISTINCT [column]
FROM #DataSource
CROSS APPLY [dbo].[fn_Analysis_ConvertCsvListToNVarCharTableWithOrder] ([column], ',') DSV
INNER JOIN [dbo].[fn_Analysis_ConvertCsvListToNVarCharTableWithOrder] (#column, ',') FV
ON DSV.[Value] = FV.[Value];
Using CROSS APPLY we are splitting the values for each column. Then we are splitting the filtering values and performing INNER JOIN in order to match only the rows having a value contained in the filter value. After that, we need a DISTINCT because column value may contains many values from the filter.
A t-sql string "splitter" is what you need but I would NOT use the mTVF recommended above as it is extremely inefficient and will kill parallelism. An inline table valued function (iTVF) is what you want for splitting strings.
I would suggest using delimitedSplit8k or delimitedSplit8k_lead which will perform ~30-90 times faster; or STRING_SPLIT if you're on SQL 2016+ and only need the value which will be several hundred times faster. Note this performance test:
-- sample data
declare #rows int = 10000;
if object_id('tempdb..#strings') is not null drop table #strings;
select top (#rows)
someid = identity(int,1,1),
somestring = replace(right(left(cast(newid() as varchar(36)), 27),21),'-',',')
into #strings
from sys.all_columns a, sys.all_columns b;
-- Performance test
set nocount on;
print 'fn_Analysis_ConvertCsvListToNVarCharTableWithOrder'+char(10)+replicate('-',50);
go
declare #st datetime = getdate(), #item varchar(10);
select #item = [value]
from #strings t
cross apply dbo.fn_Analysis_ConvertCsvListToNVarCharTableWithOrder(t.somestring,',');
print datediff(ms,#st,getdate());
go 5
print 'delimitedSplit8K (serial)'+char(10)+replicate('-',50);
go
declare #st datetime = getdate(), #item varchar(10);
select #item = item
from #strings t
cross apply dbo.DelimitedSplit8K(t.somestring,',')
option (maxdop 1);
print datediff(ms,#st,getdate());
go 5
print 'delimitedSplit8K (parallel)'+char(10)+replicate('-',50);
go
declare #st datetime = getdate(), #item varchar(10);
select #item = item
from #strings t
cross apply dbo.DelimitedSplit8K(t.somestring,',')
option (recompile, querytraceon 8649);
print datediff(ms,#st,getdate());
go 5
Results
fn_Analysis_ConvertCsvListToNVarCharTableWithOrder
--------------------------------------------------
Beginning execution loop
4183
4274
4536
4294
4406
Batch execution completed 5 times.
delimitedSplit8K (serial)
--------------------------------------------------
Beginning execution loop
50
50
50
54
53
Batch execution completed 5 times.
delimitedSplit8K (parallel)
--------------------------------------------------
Beginning execution loop
133
134
133
140
136
Batch execution completed 5 times.
How you could use to solve your problem
declare #sometable table(someid int identity, someNbr tinyint);
insert #sometable values (1),(3),(6),(12),(7),(15),(19);
declare #searchstring varchar(1000) = '1,2,3,4,19';
select someid, someNbr
from #sometable t
cross apply dbo.DelimitedSplit8K(#searchstring,',') s
where t.someNbr = s.Item;
Results
someid someNbr
----------- -------
1 1
2 3
7 19
I have the following SQL which queries a single table, single row, and returns the results as a comma separate string e.g.
Forms
1, 10, 4
SQL :
DECLARE #tmp varchar(250)
SET #tmp = ''
SELECT #tmp = #tmp + Form_Number + ', '
FROM Facility_EI_Forms_Required
WHERE Facility_ID = 11 AND EI_Year=2012 -- single Facility, single year
SELECT SUBSTRING(#tmp, 1, LEN(#tmp) - 1) AS Forms
The Facility_EI_Forms_Required table has three records for Facility_ID = 11
Facility_ID EI_Year Form_Number
11 2012 1
11 2012 10
11 2012 4
Form_number is a varchar field.
And I have a Facility table with Facility_ID and Facility_Name++.
How do I create a query to query all Facilites for a given year and produce the CSV output field?
I have this so far:
DECLARE #tmp varchar(250)
SET #tmp = ''
SELECT TOP 100 A.Facility_ID, A.Facility_Name,
(
SELECT #tmp = #tmp + B.Form_Number + ', '
FROM B
WHERE B.Facility_ID = A.Facility_ID
AND B.EI_Year=2012
)
FROM Facility A, Facility_EI_Forms_Required B
But it gets syntax errors on using #tmp
My guess is this is too complex a task for a query and a stored procedure may be need, but I have little knowledge of SPs. Can this be done with a nested query?
I tried a Scalar Value Function
ALTER FUNCTION [dbo].[sp_func_EI_Form_List]
(
-- Add the parameters for the function here
#p1 int,
#pYr int
)
RETURNS varchar
AS
BEGIN
-- Declare the return variable here
DECLARE #Result varchar
-- Add the T-SQL statements to compute the return value here
DECLARE #tmp varchar(250)
SET #tmp = ''
SELECT #tmp = #tmp + Form_Number + ', '
FROM OIS..Facility_EI_Forms_Required
WHERE Facility_ID = #p1 AND EI_Year = #pYr -- single Facility, single year
SELECT #Result = #tmp -- SUBSTRING(#tmp, 1, LEN(#tmp) - 1)-- #p1
-- Return the result of the function
RETURN #Result
END
The call
select Facility_ID, Facility.Facility_Name,
dbo.sp_func_EI_Form_List(Facility_ID,2012)
from facility where Facility_ID=11
returns
Facility_ID Facility_Name Form_List
11 Hanson Aggregates 1
so it is only returning the first record instead of all three. What am I doing wrong?
Try the following approach, which is an analogy to SO answer Concatenate many rows into a single text string. I hope it is correct, as I cannot try it out without having the schema and some demo data (maybe you can add schema and data to your question):
Select distinct A.Facility_ID, A.Facility_Name,
substring(
(
Select ',' + B.Form_Number AS [text()]
From Facility_EI_Forms_Required B
Where B.Facility_ID = A.Facility_ID
AND B.EI_Year=2012
ORDER BY B.Facility_ID
For XML PATH ('')
), 2, 1000) [Form_List]
From Facility A
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
T-SQL: Opposite to string concatenation - how to split string into multiple records
Splitting variable length delimited string across multiple rows (SQL)
I have a database table that contains column data like this:
Data (field name)
1111,44,666,77
22,55,76,54
32,31,56
I realise this is a very poor design because it is not normalised (I didn't design it - I inherited it). Is there a query that will return the data like this:
1111
44
666
77
22
55
76
54
32
31
56
I am use to using CHARINDEX and SUBSTRING, but I cannot think of a way of doing this as the number of elements in each cell (delimited by a comma) is unknown.
You can use CTE to split the data:
;with cte (DataItem, Data) as
(
select cast(left(Data, charindex(',',Data+',')-1) as varchar(50)) DataItem,
stuff(Data, 1, charindex(',',Data+','), '') Data
from yourtable
union all
select cast(left(Data, charindex(',',Data+',')-1) as varchar(50)) DataItem,
stuff(Data, 1, charindex(',',Data+','), '') Data
from cte
where Data > ''
)
select DataItem
from cte
See SQL Fiddle with Demo
Result:
| DATAITEM |
------------
| 1111 |
| 22 |
| 32 |
| 31 |
| 56 |
| 55 |
| 76 |
| 54 |
| 44 |
| 666 |
| 77 |
Or you can create a split function:
create FUNCTION [dbo].[Split](#String varchar(MAX), #Delimiter char(1))
returns #temptable TABLE (items varchar(MAX))
as
begin
declare #idx int
declare #slice varchar(8000)
select #idx = 1
if len(#String)<1 or #String is null return
while #idx!= 0
begin
set #idx = charindex(#Delimiter,#String)
if #idx!=0
set #slice = left(#String,#idx - 1)
else
set #slice = #String
if(len(#slice)>0)
insert into #temptable(Items) values(#slice)
set #String = right(#String,len(#String) - #idx)
if len(#String) = 0 break
end
return
end;
Which you can use when you query and this will produce the same result:
select s.items declaration
from yourtable t1
outer apply dbo.split(t1.data, ',') s
I created a table called [dbo].[stack] and filled it with the data you provided and this script produced what you needed. There may be a more efficient way of doing this but this works exactly how you requested.
BEGIN
DECLARE #tmp TABLE (data VARCHAR(20))
DECLARE #tmp2 TABLE (data VARCHAR(20))
--Insert all fields from your table
INSERT INTO #tmp (data)
SELECT [data]
FROM [dbo].[stack] -- your table name here
--Loop through all the records in temp table
WHILE EXISTS (SELECT 1
FROM #tmp)
BEGIN
DECLARE #data VARCHAR(100) --Variable to chop up
DECLARE #data1 VARCHAR(100) -- Untouched variable to delete from tmp table
SET #data = (SELECT TOP 1 [data]
FROM #tmp)
SET #data1 = (SELECT TOP 1 [data]
FROM #tmp)
--Loop through variable to get individual value
WHILE PATINDEX('%,%',#data) > 0
BEGIN
INSERT INTO #tmp2
SELECT SUBSTRING(#data,1,PATINDEX('%,%',#data)-1);
SET #data = SUBSTRING(#data,PATINDEX('%,%',#data)+1,LEN(#data))
IF PATINDEX('%,%',#data) = 0
INSERT INTO #tmp2
SELECT #data
END
DELETE FROM #tmp
WHERE [data] = #data1
END
SELECT * FROM #tmp2
END
Not talking about performance, you can concatenate the data in a single column and then split it.
Concatenate data: http://sqlfiddle.com/#!6/487a4/3
Split it: T-SQL: Opposite to string concatenation - how to split string into multiple records
Take a look at this article referenced in a similar question:
http://www.codeproject.com/Articles/7938/SQL-User-Defined-Function-to-Parse-a-Delimited-Str
If you create the function that they have in that article, you can call it using:
select * from dbo.fn_ParseText2Table('100|120|130.56|Yes|Cobalt Blue','|')
SELECT REPLACE(field_name, ',', ' ') from table
EDIT: Never mind this answer as you changed your question.
Given a the following table:
Index | Element
---------------
1 | A
2 | B
3 | C
4 | D
We want to generate all the possible permutations (without repetitions) using the elements.
the final result (skipping some rows) will look like this:
Results
----------
ABCD
ABDC
ACBD
ACDB
ADAC
ADCA
...
DABC
DACB
DBCA
DBAC
DCAB
DCBA
(24 Rows)
How would you do it?
After making some perhaps snarky comments, this problem stuck in my brain all evening, and I eventually came up with the following set-based approach. I believe it definitely qualifies as "elegant", but then I also think it qualifies as "kinda dumb". You make the call.
First, set up some tables:
-- For testing purposes
DROP TABLE Source
DROP TABLE Numbers
DROP TABLE Results
-- Add as many rows as need be processed--though note that you get N! (number of rows, factorial) results,
-- and that gets big fast. The Identity column must start at 1, or the algorithm will have to be adjusted.
-- Element could be more than char(1), though the algorithm would have to be adjusted again, and each element
-- must be the same length.
CREATE TABLE Source
(
SourceId int not null identity(1,1)
,Element char(1) not null
)
INSERT Source (Element) values ('A')
INSERT Source (Element) values ('B')
INSERT Source (Element) values ('C')
INSERT Source (Element) values ('D')
--INSERT Source (Element) values ('E')
--INSERT Source (Element) values ('F')
-- This is a standard Tally table (or "table of numbers")
-- It only needs to be as long as there are elements in table Source
CREATE TABLE Numbers (Number int not null)
INSERT Numbers (Number) values (1)
INSERT Numbers (Number) values (2)
INSERT Numbers (Number) values (3)
INSERT Numbers (Number) values (4)
INSERT Numbers (Number) values (5)
INSERT Numbers (Number) values (6)
INSERT Numbers (Number) values (7)
INSERT Numbers (Number) values (8)
INSERT Numbers (Number) values (9)
INSERT Numbers (Number) values (10)
-- Results are iteratively built here. This could be a temp table. An index on "Length" might make runs
-- faster for large sets. Combo must be at least as long as there are characters to be permuted.
CREATE TABLE Results
(
Combo varchar(10) not null
,Length int not null
)
Here's the routine:
SET NOCOUNT on
DECLARE
#Loop int
,#MaxLoop int
-- How many elements there are to process
SELECT #MaxLoop = max(SourceId)
from Source
-- Initialize first value
TRUNCATE TABLE Results
INSERT Results (Combo, Length)
select Element, 1
from Source
where SourceId = 1
SET #Loop = 2
-- Iterate to add each element after the first
WHILE #Loop <= #MaxLoop
BEGIN
-- See comments below. Note that the "distinct" remove duplicates, if a given value
-- is to be included more than once
INSERT Results (Combo, Length)
select distinct
left(re.Combo, #Loop - nm.Number)
+ so.Element
+ right(re.Combo, nm.Number - 1)
,#Loop
from Results re
inner join Numbers nm
on nm.Number <= #Loop
inner join Source so
on so.SourceId = #Loop
where re.Length = #Loop - 1
-- For performance, add this in if sets will be large
--DELETE Results
-- where Length <> #Loop
SET #Loop = #Loop + 1
END
-- Show results
SELECT *
from Results
where Length = #MaxLoop
order by Combo
The general idea is: when adding a new element (say "B") to any string (say, "A"), to catch all permutations you would add B
to all possible positions (Ba, aB), resulting in a new set of strings. Then iterate: Add a new element (C) to each position in a string
(AB becomes Cab, aCb, abC), for all strings (Cba, bCa, baC), and you have the set of permutations. Iterate over each result set with
the next character until you run out of characters... or resources. 10 elements is 3.6 million permutations, roughly 48MB with the above algorithm, and 14 (unique) elements would hit 87 billion permutations and 1.163 terabytes.
I'm sure it could eventually be wedged into a CTE, but in the end all that would be is a glorified loop. The logic
is clearer this way, and I can't help but think the CTE execution plan would be a nightmare.
DECLARE #s VARCHAR(5);
SET #s = 'ABCDE';
WITH Subsets AS (
SELECT CAST(SUBSTRING(#s, Number, 1) AS VARCHAR(5)) AS Token,
CAST('.'+CAST(Number AS CHAR(1))+'.' AS VARCHAR(11)) AS Permutation,
CAST(1 AS INT) AS Iteration
FROM dbo.Numbers WHERE Number BETWEEN 1 AND 5
UNION ALL
SELECT CAST(Token+SUBSTRING(#s, Number, 1) AS VARCHAR(5)) AS Token,
CAST(Permutation+CAST(Number AS CHAR(1))+'.' AS VARCHAR(11)) AS
Permutation,
s.Iteration + 1 AS Iteration
FROM Subsets s JOIN dbo.Numbers n ON s.Permutation NOT LIKE
'%.'+CAST(Number AS CHAR(1))+'.%' AND s.Iteration < 5 AND Number
BETWEEN 1 AND 5
--AND s.Iteration = (SELECT MAX(Iteration) FROM Subsets)
)
SELECT * FROM Subsets
WHERE Iteration = 5
ORDER BY Permutation
Token Permutation Iteration
----- ----------- -----------
ABCDE .1.2.3.4.5. 5
ABCED .1.2.3.5.4. 5
ABDCE .1.2.4.3.5. 5
(snip)
EDBCA .5.4.2.3.1. 5
EDCAB .5.4.3.1.2. 5
EDCBA .5.4.3.2.1. 5
first posted a while ago here
However, it would be better to do it in a better language such as C# or C++.
Just using SQL, without any code, you could do it if you can crowbar yourself another column into the table. Clearly you need to have one joined table for each of the values to be permuted.
with llb as (
select 'A' as col,1 as cnt union
select 'B' as col,3 as cnt union
select 'C' as col,9 as cnt union
select 'D' as col,27 as cnt
)
select a1.col,a2.col,a3.col,a4.col
from llb a1
cross join llb a2
cross join llb a3
cross join llb a4
where a1.cnt + a2.cnt + a3.cnt + a4.cnt = 40
Am I correctly understanding that you built Cartesian product n x n x n x n, and then filter out unwanted stuff? The alternative would be generating all the numbers up to n! and then using factorial number system to map them via element encoding.
Simpler than a recursive CTE:
declare #Number Table( Element varchar(MAX), Id varchar(MAX) )
Insert Into #Number Values ( 'A', '01')
Insert Into #Number Values ( 'B', '02')
Insert Into #Number Values ( 'C', '03')
Insert Into #Number Values ( 'D', '04')
select a.Element, b.Element, c.Element, d.Element
from #Number a
join #Number b on b.Element not in (a.Element)
join #Number c on c.Element not in (a.Element, b.Element)
join #Number d on d.Element not in (a.Element, b.Element, c.Element)
order by 1, 2, 3, 4
For an arbitrary number of elements, script it out:
if object_id('tempdb..#number') is not null drop table #number
create table #number (Element char(1), Id int, Alias as '_'+convert(varchar,Id))
insert #number values ('A', 1)
insert #number values ('B', 2)
insert #number values ('C', 3)
insert #number values ('D', 4)
insert #number values ('E', 5)
declare #sql nvarchar(max)
set #sql = '
select '+stuff((
select char(13)+char(10)+'+'+Alias+'.Element'
from #number order by Id for xml path (''), type
).value('.','NVARCHAR(MAX)'),3,1,' ')
set #sql += '
from #number '+(select top 1 Alias from #number order by Id)
set #sql += (
select char(13)+char(10)+'join #number '+Alias+' on '+Alias+'.Id not in ('
+stuff((
select ', '+Alias+'.Id'
from #number b where a.Id > b.Id
order by Id for xml path ('')
),1,2,'')
+ ')'
from #number a where Id > (select min(Id) from #number)
order by Element for xml path (''), type
).value('.','NVARCHAR(MAX)')
set #sql += '
order by 1'
print #sql
exec (#sql)
To generate this:
select
_1.Element
+_2.Element
+_3.Element
+_4.Element
+_5.Element
from #number _1
join #number _2 on _2.Id not in (_1.Id)
join #number _3 on _3.Id not in (_1.Id, _2.Id)
join #number _4 on _4.Id not in (_1.Id, _2.Id, _3.Id)
join #number _5 on _5.Id not in (_1.Id, _2.Id, _3.Id, _4.Id)
order by 1
This method uses a binary mask to select the correct rows:
;with src(t,n,p) as (
select element, index, power(2,index-1)
from table
)
select s1.t+s2.t+s3.t+s4.t
from src s1, src s2, src s3, src s4
where s1.p+s2.p+s3.p+s4.p=power(2,4)-1
My original post:
declare #t varchar(4) = 'ABCD'
;with src(t,n,p) as (
select substring(#t,1,1),1,power(2,0)
union all
select substring(#t,n+1,1),n+1,power(2,n)
from src
where n < len(#t)
)
select s1.t+s2.t+s3.t+s4.t
from src s1, src s2, src s3, src s4
where s1.p+s2.p+s3.p+s4.p=power(2,len(#t))-1
This is one of those problems that haunts you. I liked the simplicity of my original answer but there was this issue where I was still building all the possible solutions and then selecting the correct ones. One more try to make this process more efficient by only building the solutions that were correct yielded this answer. Add a character to the string only if that character didn't exist in the string. Patindex seemed like the perfect companion for a CTE solution. Here it is.
declare #t varchar(10) = 'ABCDEFGHIJ'
;with s(t,n) as (
select substring(#t,1,1),1
union all
select substring(#t,n+1,1),n+1
from s where n<len(#t)
)
,j(t) as (
select cast(t as varchar(10)) from s
union all
select cast(j.t+s.t as varchar(10))
from j,s where patindex('%'+s.t+'%',j.t)=0
)
select t from j where len(t)=len(#t)
I was able to build all 3.6 million solutions in 3 minutes and 2 seconds. Hopefully this solution will not get missed just because it's not the first.
Current solution using a recursive CTE.
-- The base elements
Declare #Number Table( Element varchar(MAX), Id varchar(MAX) )
Insert Into #Number Values ( 'A', '01')
Insert Into #Number Values ( 'B', '02')
Insert Into #Number Values ( 'C', '03')
Insert Into #Number Values ( 'D', '04')
-- Number of elements
Declare #ElementsNumber int
Select #ElementsNumber = COUNT(*)
From #Number;
-- Permute!
With Permutations( Permutation, -- The permutation generated
Ids, -- Which elements where used in the permutation
Depth ) -- The permutation length
As
(
Select Element,
Id + ';',
Depth = 1
From #Number
Union All
Select Permutation + ' ' + Element,
Ids + Id + ';',
Depth = Depth + 1
From Permutations,
#Number
Where Depth < #ElementsNumber And -- Generate only the required permutation number
Ids Not like '%' + Id + ';%' -- Do not repeat elements in the permutation (this is the reason why we need the 'Ids' column)
)
Select Permutation
From Permutations
Where Depth = #ElementsNumber
Assuming your table is named Elements and has 4 rows, this is as simple as:
select e1.Element + e2.Element + e3.Element + e4.Element
from Elements e1
join Elements e2 on e2.Element != e1.Element
join Elements e3 on e3.Element != e2.Element AND e3.Element != e1.Element
join Elements e4 on e4.Element != e3.Element AND e4.Element != e2.Element AND e4.Element != e1.Element
Way too much rust on my SQL skills, but i took a different tack for a similar problem and thought it worth sharing.
Table1 - X strings in a single field Uno
Table2 - Y strings in a single field Dos
(SELECT Uno, Dos
FROM Table1
CROSS JOIN Table2 ON 1=1)
UNION
(SELECT Dos, Uno
FROM Table1
CROSS JOIN Table2 ON 1=1)
Same principle for 3 tables with an added CROSS JOIN
(SELECT Tres, Uno, Dos
FROM Table1
CROSS JOIN Table2 ON 1=1
CROSS JOIN Table3 ON 1=1)
although it takes 6 cross-join sets in the union.
--Hopefully this is a quick solution, just change the values going into #X
IF OBJECT_ID('tempdb.dbo.#X', 'U') IS NOT NULL DROP TABLE #X; CREATE table #X([Opt] [nvarchar](10) NOT NULL)
Insert into #X values('a'),('b'),('c'),('d')
declare #pSQL NVarChar(max)='select * from #X X1 ', #pN int =(select count(*) from #X), #pC int = 0;
while #pC<#pN begin
if #pC>0 set #pSQL = concat(#pSQL,' cross join #X X', #pC+1);
set #pC = #pC +1;
end
execute(#pSQL)
--or as single column result
IF OBJECT_ID('tempdb.dbo.#X', 'U') IS NOT NULL DROP TABLE #X; CREATE table #X([Opt] [nvarchar](10) NOT NULL)
Insert into #X values('a'),('b'),('c'),('d')
declare #pSQL NVarChar(max)=' as R from #X X1 ',#pSelect NVarChar(Max)=' ',#pJoin NVarChar(Max)='', #pN int =(select count(*) from #X), #pC int = 0;
while #pC<#pN begin
if #pC>0 set #pJoin = concat(#pJoin ,' cross join #X X', #pC+1) set #pSelect = concat(#pSelect ,'+ X', #pC+1,'.Opt ')
set #pC = #pC +1;
end
set #pSQL = concat ('select X1.Opt', #pSelect,#pSQL ,#pJoin)
exec(#pSQL)
create function GeneratePermutations (#string nvarchar(4000))
RETURNS #Permutations
TABLE(
name nVARCHAR(500)
)
AS
begin
declare #SplitedString table(name nvarchar(500))
insert into #SplitedString
select *
from string_split(#string,' ')
declare #CountOfWords as int
set #CountOfWords = (select count(*) from #SplitedString)
;with cte_Permutations (name, level) as (
select convert(nvarchar(500), name), 1 as level from #SplitedString
union all
select convert(nvarchar(500),splited.name+','+cte_Permutations.name),level+1
from #SplitedString splited ,cte_Permutations
where level < #CountOfWords
)
insert into #Permutations
select name
from cte_Permutations
where level = #CountOfWords
order by name
return
end
select *
From (
select 1 id,'a b c' msg
union all
select 2 id,'d e' msg
) p
cross apply dbo.GeneratePermutations(p.msg)
How can I insert values from a comma-separated input parameter with a stored procedure?
For example:
exec StoredProcedure Name 17,'127,204,110,198',7,'162,170,163,170'
you can see that I have two comma-separated value lists in the parameter list. Both will have the same number of values: if the first has 5 comma-separated values, then the second one also has 5 comma-separated values.
127 and 162 are related
204 and 170 are related
...and same for the others.
How can I insert these two values?
One comma-separated value is inserted, but how do I insert two?
Have a lok at something like (Full Example)
DECLARE #Inserts TABLE(
ID INT,
Val1 INT,
Val2 INT,
Val3 INT
)
DECLARE #Param1 INT,
#Param2 VARCHAR(100),
#Param3 INT,
#Param4 VARCHAR(100)
SELECT #Param1 = 17,
#Param2 = '127,204,110,198',
#Param3 = 7,
#Param4 = '162,170,163,170'
DECLARE #Table1 TABLE(
ID INT IDENTITY(1,1),
Val INT
)
DECLARE #Table2 TABLE(
ID INT IDENTITY(1,1),
Val INT
)
DECLARE #textXML XML
SELECT #textXML = CAST('<d>' + REPLACE(#Param2, ',', '</d><d>') + '</d>' AS XML)
INSERT INTO #Table1
SELECT T.split.value('.', 'nvarchar(max)') AS data
FROM #textXML.nodes('/d') T(split)
SELECT #textXML = CAST('<d>' + REPLACE(#Param4, ',', '</d><d>') + '</d>' AS XML)
INSERT INTO #Table2
SELECT T.split.value('.', 'nvarchar(max)') AS data
FROM #textXML.nodes('/d') T(split)
INSERT INTO #Inserts
SELECT #Param1,
t1.Val,
#Param3,
t2.Val
FROM #Table1 t1 INNER JOIN
#Table2 t2 ON t1.ID = t2.ID
SELECT *
FROM #Inserts
You need a way to split and process the string in TSQL, there are many ways to do this. This article covers the PROs and CONs of just about every method:
"Arrays and Lists in SQL Server 2005 and Beyond, When Table Value Parameters Do Not Cut it" by Erland Sommarskog
You need to create a split function. This is how a split function can be used:
SELECT
*
FROM YourTable y
INNER JOIN dbo.yourSplitFunction(#Parameter) s ON y.ID=s.Value
I prefer the number table approach to split a string in TSQL but there are numerous ways to split strings in SQL Server, see the previous link, which explains the PROs and CONs of each.
For the Numbers Table method to work, you need to do this one time table setup, which will create a table Numbers that contains rows from 1 to 10,000:
SELECT TOP 10000 IDENTITY(int,1,1) AS Number
INTO Numbers
FROM sys.objects s1
CROSS JOIN sys.objects s2
ALTER TABLE Numbers ADD CONSTRAINT PK_Numbers PRIMARY KEY CLUSTERED (Number)
Once the Numbers table is set up, create this split function:
CREATE FUNCTION [dbo].[FN_ListToTableRows]
(
#SplitOn char(1) --REQUIRED, the character to split the #List string on
,#List varchar(8000)--REQUIRED, the list to split apart
)
RETURNS TABLE
AS
RETURN
(
----------------
--SINGLE QUERY-- --this will return empty rows, and row numbers
----------------
SELECT
ROW_NUMBER() OVER(ORDER BY number) AS RowNumber
,LTRIM(RTRIM(SUBSTRING(ListValue, number+1, CHARINDEX(#SplitOn, ListValue, number+1)-number - 1))) AS ListValue
FROM (
SELECT #SplitOn + #List + #SplitOn AS ListValue
) AS InnerQuery
INNER JOIN Numbers n ON n.Number < LEN(InnerQuery.ListValue)
WHERE SUBSTRING(ListValue, number, 1) = #SplitOn
);
GO
You can now easily split a CSV string into a table and join on it. To accomplish your task, set up a test table to insert into:
create table YourTable (col1 int, col2 int)
then create your procedure:
CREATE PROCEDURE StoredProcedureName
(
#Params1 int
,#Array1 varchar(8000)
,#Params2 int
,#Array2 varchar(8000)
)
AS
INSERT INTO YourTable
(col1, col2)
SELECT
a1.ListValue, a2.ListValue
FROM dbo.FN_ListToTableRows(',',#Array1) a1
INNER JOIN dbo.FN_ListToTableRows(',',#Array2) a2 ON a1.RowNumber=a2.RowNumber
GO
test it out:
exec StoredProcedureName 17,'127,204,110,198',7,'162,170,163,170'
select * from YourTable
OUTPUT:
(4 row(s) affected)
col1 col2
----------- -----------
127 162
204 170
110 163
198 170
(4 row(s) affected)
This may not be an answer to your question... But I thought of letting you know that there is a better way to pass related values (Table Format) to a stored procedure... XML... You can build the XML string in your app (just as regular string) and pass it on to the stored procedure as a parameter... You can then use the following syntax to get it into a table. Hope this helps... In this way you can pass an entire table as parameter to stored procedure...
--Parameters
#param1 int,
#Budgets xml,
#Param2 int
-- #Budgets = '<Values><Row><Val1>127</Val1><Val2>162</Val2></Row> <Row><Val1>204</Val1><Val2>170</Val2></Row></Values>'
SELECT #param1 as Param1,
x.query('Val1').value('.','int') as val1,
#param3 as Param3,
x.query('Val2').value('.','int') as val1,
into #NewTable
FROM #Budgets.nodes('/Values/Row') x1(x)