I am trying to sort a string such as '3,9,6' to '3,6,9' with TSQL. My approach was extracting the characters from the string, casting them as integers and putting them into a #temptable using a primary key for sorting. For this I created this procedure:
create proc sortstring(#string varchar(50))
as
declare #limit int = len(#string)
declare #counter int = 1
declare #temps char
create table #temptable (tempstring varchar(30) primary key)
while #counter<=#limit
begin
set #temps = SUBSTRING(#string,#counter,1)
if(#temps!=',')
insert into #temptable values (CAST(#temps as int))
set #counter= #counter+1
end
After this process, I was thinking to extract the integers from #temptable with a while loop to create the sorted string format '3,6'9'. But I think my whole approach is not performance efficient.
Any suggestions?
Below method should be a bit better than the while loop
declare #string varchar(255) = '3,9,6,0,5,12,88,15,23,45,77,88,125,1'
declare #TableList table (tmpStr int)
DECLARE #XML XML
SET #XML = '<root><csv>' + replace(#string, ',', '</csv><csv>') + '</csv></root>'
INSERT #TableList
SELECT replace(Word.value('.', 'integer'), CHAR(10), '')
FROM #XML.nodes('/root/csv') AS WordList(Word)
select * from #TableList order by 1
go
IF OBJECT_ID('tempdb.dbo.#TableList') IS NOT NULL
DROP TABLE #TableList
create table #TableList (tmpStr int)
declare #string varchar(255) = '3,9,6,0,5,12,88,15,23,45,77,88,125,1'
SET #string = 'SELECT ' + REPLACE(#string,',',' UNION ALL SELECT ')
SET #string='INSERT INTO #TableList (tmpStr) ' + #string
EXEC( #string)
SELECT * FROM #TableList ORDER BY tmpStr
Its not a conventional approach but it runs fast.
Related
I have a column in table which has multiple values separated by space.
i want to return those rows which has any of the matching values from search string.
Eg:
search string= 'mumbai pune'
This need to return rows matching word 'mumbai' or 'pune' or matching both
Declare #str nvarchar(500)
SET #str='mumbai pune'
create table #tmp
(
ID int identity(1,1),
citycsv nvarchar(500)
)
insert into #tmp(citycsv)Values
('mumbai pune'),
('mumbai'),
('nagpur')
select *from #tmp t
select *from #tmp t
where t.citycsv like '%'+#str+'%'
drop table #tmp
Required Out put:
ID CityCSV
1 mumbai pune
2 mumbai
You can use a splitter function to split your search string out as a table contain the desired search keys. Then you can join your main table with the table containing the search key using the LIKE statement.
For completeness I have included an example of a string splitter function, however there are plenty of example here on SO.
Example string splitter function:
CREATE FUNCTION [dbo].[SplitString]
(
#string NVARCHAR(MAX),
#delimiter CHAR(1)
)
RETURNS #output TABLE(splitdata NVARCHAR(MAX)
)
BEGIN
DECLARE #start INT, #end INT
SELECT #start = 1, #end = CHARINDEX(#delimiter, #string)
WHILE #start < LEN(#string) + 1 BEGIN
IF #end = 0
SET #end = LEN(#string) + 1
INSERT INTO #output (splitdata)
VALUES(SUBSTRING(#string, #start, #end - #start))
SET #start = #end + 1
SET #end = CHARINDEX(#delimiter, #string, #start)
END
RETURN
END
The following query demonstrates how the string splitter function can be combined with regular expressions to get the desired result:
SELECT DISTINCT
C.ID
,C.citycsv
FROM #tmp C
INNER JOIN (
SELECT splitdata + '[ ]%' AS MatchFirstWord -- Search pattern to match the first word in the string with the target search word.
,'%[ ]' + splitdata AS MatchLastWord -- Search pattern to match the last word in the string with the target search word.
,'%[ ]' + splitdata + '[ ]%' AS MatchMiddle -- Search pattern to match any words in the middle of the string with the target search word.
,splitdata AS MatchExact -- Search pattern for exact match.
FROM dbo.SplitString(#str, ' ')
) M ON (
(C.citycsv LIKE M.MatchFirstWord) OR
(C.citycsv LIKE M.MatchLastWord) OR
(C.citycsv LIKE M.MatchMiddle) OR
(C.citycsv LIKE M.MatchExact)
)
ORDER BY C.ID
Another approach , by using ReplaceFunction
Its syntax as following:
REPLACE ( string_expression , string_pattern , string_replacement )
so we could reach the target via replacing the every space that separated the values with the next pattern
'%'' OR t.citycsv like ''%'
An example:
Declare #str nvarchar(500),
#Where nvarchar (1000),
#Query nvarchar (4000)
SET #str='mumbai pune'
create table #tmp
(
ID int identity(1,1),
citycsv nvarchar(500)
)
insert into #tmp(citycsv)Values
('mumbai pune'),
('mumbai'),
('nagpur')
select * from #tmp t
Set #Where = 'where t.citycsv like ' + '''%'+ replace (RTRIM(LTRIM(#str)), ' ', '%'' OR t.citycsv like ''%') +'%'''
Set #Query = 'select * from #tmp t ' + #Where
execute sp_executesql #Query
drop table #tmp
The Result:
I am working on SQL Server 2008 to create a stored procedure that:
takes a string variable like this: '1,2,3'
splits the string using a table-valued function to get each value separately
and then inserts each value into a new row in a table
What I am trying to do is something like this:
WHILE (select vlaue FROM dbo.SplitString('1,2,3',',')) has rows
insert into TableName (col1,col2) values (col1Data, value)
I am having a hard time trying to find the right syntax for this.
I use this Table-valued function:
CREATE FUNCTION [dbo].[Split] (#sep char(1), #s varchar(512))
RETURNS table
AS
RETURN (
WITH Pieces(pn, start, stop) AS (
SELECT 1, 1, CHARINDEX(#sep, #s)
UNION ALL
SELECT pn + 1, stop + 1, CHARINDEX(#sep, #s, stop + 1)
FROM Pieces
WHERE stop > 0
)
SELECT pn,
SUBSTRING(#s, start, CASE WHEN stop > 0 THEN stop-start ELSE 512 END) AS s
FROM Pieces
)
GO
Which takes a string with a separator and returns a table with two columns the first returns a 1-based position and the second the element at that position in the string:
Usage:
SELECT * FROM dbo.Split(',', '1,2,3')
Returns:
pn s
1 1
2 2
3 3
To Insert results into a table:
INSERT INTO TableName (Col1)
SELECT S FROM dbo.Split(',', '1,2,3)
For your specific example change your syntax to be:
insert into TableName (col1,col2)
select col1Data, value FROM dbo.SplitString('1,2,3',',')
The typical INSERT INTO ... SELECT ... should do:
INSERT INTO TableName (col1,col2)
SELECT #col1Data,value FROM dbo.SplitString('1,2,3',','))
If someone else is looking for this, I was about to make a split function as several answers mentioned but noticed there's a built-in function that does this already.
string_split was added in MSSQL 2016.
INSERT INTO Project.FormDropdownAnswers (FkTableId, CreatedBy, CreatedDate)
SELECT 123, TRY_CAST(value AS INT), #username, getdate()
FROM string_split('44,45,46,47,55',',')
https://learn.microsoft.com/en-us/sql/t-sql/functions/string-split-transact-sql
CREATE TABLE tablename
(
id SMALLINT ,
value INT
)
INSERT INTO tablename ( id, value )
SELECT * FROM dbo.Split('1,2,3',',')
try this....
If need to use as variables there is 2 nice options:
Procedure MF_SPLIT
CREATE PROC [MF_SPLIT] (#ELS NVARCHAR(MAX)=NULL OUTPUT, #RET NVARCHAR(MAX)=NULL OUTPUT, #PROC NVARCHAR(MAX)=NULL) AS BEGIN
IF #ELS IS NULL BEGIN
PRINT ' #ELS
List of elements in string (OUTPUT)
#RET
Next return (OUTPUT)
#PROC
NULL = '','', content to do split
Example:
DECLARE #NAMES VARCHAR(100) = ''ERICK,DE,VATHAIRE''
DECLARE #N VARCHAR(100)
WHILE #NAMES IS NOT NULL BEGIN
EXEC MF_SPLIT #NAMES OUTPUT, #N OUTPUT
SELECT List = #NAMES, ActiveWord = #N
END'
RETURN
END
SET #PROC = ISNULL(#PROC, ',')
IF CHARINDEX(#PROC, #ELS) = 0 BEGIN
SELECT #RET = #ELS, #ELS = NULL
RETURN
END
SELECT
#RET = LEFT(#ELS, CHARINDEX(#PROC, #ELS) - 1)
, #ELS = STUFF(#ELS, 1, LEN(#RET) + 1, '')
END
Usage:
DECLARE #NAMES VARCHAR(100) = '1,2,3'
DECLARE #N VARCHAR(100)
WHILE #NAMES IS NOT NULL BEGIN
EXEC MF_SPLIT #NAMES OUTPUT, #N OUTPUT
SELECT List = #NAMES, ActiveWord = #N
END
Procedure MF_SPLIT_DO (Depends of MF_SPLIT), less sintax to use BUT the code will be in a string and use default variable "#X"
CREATE PROC MF_SPLIT_DO (#ARR NVARCHAR(MAX), #DO NVARCHAR(MAX)) AS BEGIN
--Less sintax
DECLARE #X NVARCHAR(MAX)
WHILE #ARR IS NOT NULL BEGIN
EXEC MF_SPLIT #ARR OUT, #X OUT
EXEC SP_EXECUTESQL #DO, N'#X NVARCHAR(MAX)', #X
END
END
Usage:
EXEC MF_SPLIT_DO '1,2,3', 'SELECT #X'
I have a query that selects from multiple tables using a join. I want to execute this query from different databases via a loop.
I have accomplished that via (simplified query):
DECLARE #intCounter int
SET #intCounter = 1
DECLARE #tblBedrijven TABLE (ID int identity(1,1),
CompanyName varchar(20),
DatabaseTable varchar(100))
INSERT INTO #tblBedrijven VALUES ('001-CureCare', '<TABLE/ DATABASE1> AUS'),
('002-Cleaning', '[global_nav5_prod].[dbo].<TABLE/ DATABASE2>] AUS')
DECLARE #strCompany varchar(20)
DECLARE #strTable varchar(100)
WHILE (#intCounter <= (SELECT MAX(ID) FROM #tblBedrijven))
BEGIN
SET #strTable = (SELECT DatabaseTable FROM #tblBedrijven
WHERE ID = #intCounter)
SET #strCompany = (SELECT CompanyName FROM #tblBedrijven
WHERE ID = #intCounter)
EXEC('SELECT ''' + #strCompany + ''' as Company,
AUS.[User],
AUS.[E-mail]
FROM' + #strTable)
SET #intCounter = #intCounter + 1
END
My problem is that the result generates 2 separate tables (for every loop). I want to union the results but have no clue how.
Any suggestions?
Thanks in advance.
Can't you use something like the below code where you append all the sqls with union and finally execute the sql once only without executing in a loop. I am not an expert in SQL Server but I have written many other similar stored procedures using other RDBMS. So please bear any syntax errors.
DECLARE #intCounter int
DECLARE #maxId int
SET #intCounter = 1
DECLARE #tblBedrijven TABLE (ID int identity(1,1),
CompanyName varchar(20),
DatabaseTable varchar(100))
INSERT INTO #tblBedrijven VALUES ('001-CureCare', '<TABLE/ DATABASE1> AUS'),
('002-Cleaning', '[global_nav5_prod].[dbo].<TABLE/ DATABASE2>] AUS')
DECLARE #strCompany varchar(20)
DECLARE #strTable varchar(100)
DECLARE #strSql varchar(5000)
SET #maxId = (SELECT MAX(ID) FROM #tblBedrijven)
WHILE (#intCounter <= #maxId)
BEGIN
SET #strTable = (SELECT DatabaseTable FROM #tblBedrijven
WHERE ID = #intCounter)
SET #strCompany = (SELECT CompanyName FROM #tblBedrijven
WHERE ID = #intCounter)
SET #strSql = #strSql + ('SELECT ''' + #strCompany + ''' as Company,
AUS.[User],
AUS.[E-mail]
FROM' + #strTable)
IF #intCounter < #maxId THEN
BEGIN
SET #strSql = #strSql + ' UNION '
END
SET #intCounter = #intCounter + 1
END
EXEC(#strSql)
I have a table named assignRole.
I am passing string of userid (int) csv ,and passing roleid(int).
I want a stored procedure which split userid from string and take roleid and insert these values in table.this thing is to happen for all values in userid string.
First, create a function:
CREATE FUNCTION [dbo].[SplitInts]
(
#List VARCHAR(MAX),
#Delimiter CHAR(1)
)
RETURNS TABLE
WITH SCHEMABINDING
AS
RETURN ( SELECT Item = CONVERT(INT, Item) FROM (
SELECT Item = x.i.value('(./text())[1]', 'int') FROM (
SELECT [XML] = CONVERT(XML, '<i>' + REPLACE(#List, #Delimiter, '</i><i>')
+ '</i>').query('.') ) AS a CROSS APPLY [XML].nodes('i') AS x(i)) AS y
WHERE Item IS NOT NULL
);
Now you can say:
INSERT dbo.assignRole(RoleID, UserID)
SELECT #RoleID, Item
FROM dbo.SplitInts(#UserIDList, ',');
I like to use a table-valued function to do the split.
IF OBJECT_ID (N'dbo.StrSplit') IS NOT NULL DROP FUNCTION dbo.[StrSplit]
GO
CREATE FUNCTION [dbo].[StrSplit]
(
#String VARCHAR(MAX), #Delimiter char(1)
)
RETURNS
#Results TABLE (
Items NVARCHAR(MAX)
)
AS
BEGIN
DECLARE #INDEX INT
DECLARE #SLICE nvarchar(MAX)
-- HAVE TO SET TO 1 SO IT DOESNT EQUAL ZERO FIRST TIME IN LOOP
SELECT #INDEX = 1
-- Early exit if passed string is null
IF #String IS NULL RETURN
WHILE #INDEX !=0
BEGIN
-- GET THE INDEX OF THE FIRST OCCURENCE OF THE SPLIT CHARACTER
SELECT #INDEX = CHARINDEX(#Delimiter,#STRING)
-- NOW PUSH EVERYTHING TO THE LEFT OF IT INTO THE SLICE VARIABLE
IF #INDEX !=0
SELECT #SLICE = LEFT(#STRING,#INDEX - 1)
ELSE
SELECT #SLICE = #STRING
-- PUT THE ITEM INTO THE RESULTS SET
INSERT INTO #Results(Items) VALUES(#SLICE)
-- CHOP THE ITEM REMOVED OFF THE MAIN STRING
SELECT #STRING = RIGHT(#STRING,LEN(#STRING) - #INDEX)
-- BREAK OUT IF WE ARE DONE
IF LEN(#STRING) = 0 BREAK
END
RETURN
END
GO
GRANT SELECT ON [dbo].[StrSplit] TO [public]
I'm new to stored procedure, and trying to figure out how to create a table with a dynamic number of columns.
I'm using Microsoft SQL Server 2008.
I have the following query which is meant to be used to store data passed from a XML source into a table which should be created by this stored procedure.
CREATE PROCEDURE AddClaimData_newV2
#xml_text VARCHAR(4000),
#devYearColumnNumber INT
AS
DECLARE #i INT
DECLARE #tempTable TABLE (
ProductName VARCHAR(50),
Year INT,
Value1 FLOAT ,
Value2 FLOAT ,
Value3 FLOAT ,
Value4 FLOAT )
EXEC sp_xml_preparedocument #i OUTPUT, #xml_text
INSERT INTO #tempTable
SELECT * FROM
OPENXML(#i, '/root/Product/Year/Value1/Value2/Value3/Value4', 1)
WITH
(ProductName VARCHAR(50) '../../../../../#Name',
Year INT '../../../../#Year',
Value1 FLOAT '../../../#Value',
Value2 FLOAT '../../#Value',
Value3 FLOAT '../#Value',
Value4 FLOAT '#Value')
/* create a new table and store all the data from #tempTable */
EXEC sp_xml_removedocument #i
Basically, ProductName and Year are fixed columns, but the Value[i] columns are decided by parameter devYearColumnNumber.
My questions are :
how to use the parameter to dynamically create those Value[i] columns
then, how to create a new table with those columns to store data from #tempTable
declare #currentColumnNumber int, #sqlCommandToCreateTable nvarchar(4000)
set #currentColumnNumber = 1
set #sqlCommandToCreateTable = 'CREATE TABLE testClaimData (
ProductName VARCHAR(50),
Year INT '
while #currentColumnNumber <= #devYearColumnNumber
begin
set #sqlCommandToCreateTable = #sqlCommandToCreateTable + ' ,
Value' + convert(varchar, #currentColumnNumber) + ' FLOAT'
set #currentColumnNumber = #currentColumnNumber + 1
end
set #sqlCommandToCreateTable = #sqlCommandToCreateTable + ' )'
exec sp_executeSql #sqlCommandToCreateTable
--[Test this with:]-- exec sp_executeSql N'select * from testClaimData'
--similar mechanism for the "INSERT INTO" here