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Hello,
I have to Update a Csv file into Sql Server DataBase, the file contains 200 000 records.
So how can i do to optimize the DbTransactions ?! because 200 000 is too big and i want not overload the Database Server.
Solution1: create a global DbTransaction with IsolationLevel=RaadUncommited
Solution2: create a DbTransaction foreach Record with IsolationLevel=RaadUncommited
Solution3: create a DbTransaction for a group of Records with IsolationLevel=RaadUncommited
Already Thanks.
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What do you mean by "update" csv into database? You update records in place, or insert new ones?
Look at BULK INSERT at MSDN. It is very fast, you can insert all in temp table and then update records, if that is your goal.
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thank you for you answer.
I update a record.
I know the BULK INSERT but the CSV file have to be in the same machine of Sql Server Data base!
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i am using ms sql server 2005. i used full text search (fts) facility. now i want to know that does fts cares about sequence of a phrase. for example
("select * from news AS N INNER JOIN containstable(news,datacontent,'local' AND 'company') AS A ON N.[id]=A.[KEY] ORDER BY A.RANK DESC",connec)
this returns results that includes local and company but anywhere in the document. but i want it like "my local company is very big." so i mean the word "company" must come after "local" (at least 1 time) to have a result. how can i do this. i tried it as 'local company' but an error occured...
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Hi All
i have a view in sql2005.
this view links to several other views and those views may link to other views.
how do i get a completed list of dependancies?
i have tried to use this but only gives me the 1st level
EXEC sp_MSdependencies N'viewname', null, 131527
thanks in advance
Anoop
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Try this
EXEC sp_MSdependencies N'viewname', null, 266751
Hope this helps
Niladri Biswas
modified on Tuesday, June 30, 2009 6:08 AM
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Hi,
nope this returns no data...
i am using SQL2005 and have a view that is dependant on several other views.
any other suggestions are welcomed...
thank you
Anoop
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Good Day All
i have the Following Example String
10,11,9
This is a Varchar Field in SQl, and i want this Sort the numbers inside this String to be like this
9,10,11
Thanks
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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use need something like
DROP FUNCTION IF EXISTS sortString;
DELIMITER |
CREATE FUNCTION sortString(inString TEXT) RETURNS TEXT
BEGIN
DECLARE delim CHAR(1) DEFAULT ','; -- delimiter
DECLARE strings INT DEFAULT 0; -- number of substrings
DECLARE forward INT DEFAULT 1; -- index for traverse forward thru substrings
DECLARE backward INT; -- index for traverse backward thru substrings, position in calc. substrings
DECLARE remain TEXT; -- work area for calc. no of substrings
-- swap areas TEXT for string compare, INT for numeric compare
DECLARE swap1 TEXT; -- left substring to swap
DECLARE swap2 TEXT; -- right substring to swap
SET remain = inString;
SET backward = LOCATE(delim, remain);
WHILE backward != 0 DO
SET strings = strings + 1;
SET backward = LOCATE(delim, remain);
SET remain = SUBSTRING(remain, backward+1);
END WHILE;
IF strings < 2 THEN RETURN inString; END IF;
REPEAT
SET backward = strings;
REPEAT
SET swap1 = SUBSTRING_INDEX(SUBSTRING_INDEX(inString,delim,backward-1),delim,-1);
SET swap2 = SUBSTRING_INDEX(SUBSTRING_INDEX(inString,delim,backward),delim,-1);
IF swap1 > swap2 THEN
SET inString = TRIM(BOTH delim FROM CONCAT_WS(delim
,SUBSTRING_INDEX(inString,delim,backward-2)
,swap2,swap1
,SUBSTRING_INDEX(inString,delim,(backward-strings))));
END IF;
SET backward = backward - 1;
UNTIL backward < 2 END REPEAT;
SET forward = forward +1;
UNTIL forward + 1 > strings
END REPEAT;
RETURN inString;
END |
DELIMITER ;
-- example call:
SET @Xstr = "The,quick,brown,fox,jumped,over,the,lazy,dog";
SET @Ystr = "9,8,7,6,5,4,3,2,1";
SET @Zstr = "7,8,9,6,5,2,1,4,3";
SET @str = "3,2,3,4,2,3";
SELECT sortString(@str) AS s1,sortString(@Xstr) AS s2,sortString(@Ystr) AS s3,sortString(@Zstr) AS s4;
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Your Query is Full of
>
They will not Compile in SQL
Thanks
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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the sample is of MySQL, you need to write the code for MS SQL
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I got a Solution
create FUNCTION [dbo].[fnSplit](
@sInputList VARCHAR(8000) -- List of delimited items
, @sDelimiter VARCHAR(8000) = ',' -- delimiter that separates items
) RETURNS @List TABLE (item int)
BEGIN
DECLARE @sItem VARCHAR(8000)
WHILE CHARINDEX(@sDelimiter,@sInputList,0) <> 0
BEGIN
SELECT
@sItem=RTRIM(LTRIM(SUBSTRING(@sInputList,1,CHARINDEX(@sDelimiter,@sInputList,0)-1))),
@sInputList=RTRIM(LTRIM(SUBSTRING(@sInputList,CHARINDEX(@sDelimiter,@sInputList,0)+LEN(@sDelimiter),LEN(@sInputList))))
IF LEN(@sItem) > 0
INSERT INTO @List SELECT @sItem
END
IF LEN(@sInputList) > 0
INSERT INTO @List SELECT @sInputList -- Put the last item in
RETURN
END
go
create FUNCTION GetSortedString
(
@inputString varchar(max)
)
RETURNS varchar(max)
AS
BEGIN
declare @outputString varchar(max)
set @outputString = ''
select @outputString = ltrim(rtrim(str(item))) + ',' + @outputString from dbo.fnSplit(@inputString,',') order by item desc
if SUBSTRING(@outputString,len(@outputString),1) = ','
begin
set @outputString = SUBSTRING(@outputString,1,len(@outputString)-1)
end
return @outputString
END
GO
and Tested it like this
select dbo.GetSortedString('2,1,4,5,3,6')
Thanks
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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Hi,
The steps are:
1) Use a table valued split function to split the comma delimited strings
2) Then sort the table values
3) Loop thru each values of the table and make a customised delimited
string .
The above steps are depicted below
STEP 1:
The split function goes like this
-- Created by NILADRI BISWAS
ALTER FUNCTION [dbo].[fnSplit]
(@oldstring as varchar(100),@delimeter as varchar(1))
RETURNS @mytab table(counter int,stringval varchar(100))
AS
Begin
Declare @newstring as varchar(100)
Declare @pos as int
Declare @i as int
Declare @c as int
set @newstring = '';
set @i = 1
set @c = 0
set @pos = CHARINDEX(@delimeter, @oldstring)
WHILE (@i != 0)
Begin
set @c = @c +1
insert into @mytab(counter,stringval) values(@c,@newstring + Substring(@oldstring,0, @pos))
set @oldstring = Substring(@oldstring,@pos+1,len(@oldstring))
set @pos = CHARINDEX(@delimeter, @oldstring)
set @i = @pos;
if (@i = 0)
Begin
set @i = 0;
set @c = @c +1
insert into @mytab(counter,stringval) values(@c,@newstring + @oldstring)
End
End
return
End
Create a stored proc like this
-- Created by NILADRI BISWAS
ALTER PROCEDURE dbo.SortedList
-- Add the parameters for the stored procedure here
(@DelimitedValues AS VARCHAR(50))
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @OUTPUT VARCHAR(30)
DECLARE @TEMPOUTPUT VARCHAR(30)
SET @OUTPUT = ''
SET @TEMPOUTPUT = ''
DECLARE @MYCURSOR CURSOR
SET @MYCURSOR = CURSOR FOR
STEP 2:
SELECT STRINGVAL FROM dbo.fnSplit(@DelimitedValues,',')
ORDER BY RIGHT(REPLICATE('0', 11) + stringval, 10)
STEP 3:
OPEN @MYCURSOR
FETCH NEXT
FROM @MYCURSOR INTO @TEMPOUTPUT
WHILE @@FETCH_STATUS = 0
BEGIN
SET @OUTPUT = @OUTPUT + @TEMPOUTPUT + ','
FETCH NEXT
FROM @MYCURSOR INTO @TEMPOUTPUT
END
CLOSE @MYCURSOR
DEALLOCATE @MYCURSOR
SET @OUTPUT = SUBSTRING(@OUTPUT,0,LEN(@OUTPUT))
PRINT @OUTPUT
END
Hope this helps
Niladri Biswas
modified on Monday, June 29, 2009 11:52 AM
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Thank its Works like wonders
Resolved
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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Niladri Biswas
modified on Monday, June 29, 2009 11:45 PM
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Cool
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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I am using MS Access data base here i have a problem with Joining of the tables which giving me a error like operator syntax error. i came to know that we have to use paranthesis to join tables in MS Access, but i don't know how to use them.
Here i am posting my SQL query can any body give me solution for this. This is query is working fine in SQL server but i want it in MS Access.
select * from students a
left join subdetails b on a.bid=b.bid
left join subjects c on b.subid=c.subid
left join details d on c.subid=d.subid and a.hno=d.hno
where d.hno=1234 and b.bid=2 and b.semid=1
Please help me.
Thanks & Regards,
Anil Chelasani
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Use query designer to construct the query then switch to SQL view.
You can then copy and paste resulting SQL.
Note that Access tends to put in redundant brackets but they don't cause any problem.
Regards
David R
---------------------------------------------------------------
"Every program eventually becomes rococo, and then rubble." - Alan Perlis
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Thanks.
Thanks & Regards,
Anil Chelasani
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Try this
SELECT * FROM
(
( STUDENTS AS A LEFT JOIN SUBDETAILS AS B ON A.BID=B.BID)
LEFT JOIN SUBJECTS C ON B.SUBID=C.SUBID
)
LEFT JOIN DETAILS D ON C.SUBID=D.SUBID
WHERE D.HNO=1234
AND B.BID=2
AND B.SEMID=1
AND A.HNO=D.HNO
N.B.~ If you want to perform more than one left join in MS Access, you should use parenthesis in the From clause.
Hope this helps
Niladri Biswas
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Thanks this is working fine but when i am trying to check second condition in the ON that is like
LEFT JOIN DETAILS D ON C.SUBID=D.SUBID AND C.HNO = A.HNO
it is again giving the error.
can you please tell me how to check for second condition in the "ON".
Thanks & Regards,
Anil Chelasani
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Here's the SQL generated by the query designer.
Two versions: first with fixed values, second using parameters.
Note the redundant parentheses (esp in WHERE) - and the layout is pretty poor.
SELECT a.*
FROM ((Student AS a LEFT JOIN Subdetails AS b ON a.bid = b.bid)
LEFT JOIN Subjects AS c ON b.subid = c.subid)
LEFT JOIN details AS d ON c.subid = d.subid
WHERE (((b.bid)=2) AND ((b.semid)=1) AND ((d.hno)=1234) AND ((d.hno)=[a].[hno]));
PARAMETERS inBid Long, inSemid Long, inHno Long;
SELECT a.*
FROM ((Student AS a LEFT JOIN Subdetails AS b ON a.bid = b.bid)
LEFT JOIN Subjects AS c ON b.subid = c.subid)
LEFT JOIN details AS d ON c.subid = d.subid
WHERE (((b.bid)=[inBid]) AND ((b.semid)=[inSemid]) AND ((d.hno)=[inHno]) AND ((d.hno)=[a].[hno]));
Looking at your original post I suspect this is a problems
left join details d on c.subid=d.subid and a.hno=d.hno
The tables on both sides of the and must be the same i.e. c=d or a=d - cannot have c=d and a=d in same join clause.
Regards
David R
---------------------------------------------------------------
"Every program eventually becomes rococo, and then rubble." - Alan Perlis
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it worked fine. Thanks for ur time and consideration.
Thanks & Regards,
Anil Chelasani
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