Is there a perf difference between:
create function dbo.zzz
returns uniqueidentifier
return '0000-0000-0000-00000000'
select dbo.zzz
vs.
se;ect '0000-0000-0000-00000000'
Thanks,
J
In an effort to automate a process, I am trying to populate a csv textfile with data from a SQL Server 2000 database that will be imported by a proprietary database; however, not all of the data required to go into the textfile is available in the source db. Fortunately, the data I'm needing has constant values for the fields that I want to populate, i.e Lab Name. Whereas, the Destination database will receive data from other labs but not via this source.
Is it possible to use a constant rather than a db field within the SQL query to populate one of the textfile fields. (I placed "LABNAME" in where I would like it to go) A portion of my present SQL statement is:
Select LEFT([SAMPNAME], 4) AS IUNUM, RIGHT(LEFT([SAMPNAME], 8), 3) AS SITENUM, convert(varchar,[SAMPDATE], 112) as SAMPDATE, [BDL] AS "SAMPNUM", [ANALYTE], (CASE [STARTDATE]-[SAMPDATE] WHEN 0 THEN '2' ELSE '1' END) AS METHOD, convert(varchar,[STARTDATE], 112) as STARTDATE, [FINAL], [BDL], "LABNAME", [NOTES1], [SAMPLER], [ORDNO], [UNITS]
From [CUSTOMER]
As you can see, I have already done a lot of formatting within the statement but would appreciate someone's SQL expertise to tell me if using a constant is possible or not.
Thanks,
Al
Hi,
I want to bcp data file generated by other system into a table maintened by our system. While generating the bcp data file they leave data value for id column empty (because they are not aware of the value in our system).
I want to specify a constant value for id column during bcp. Is there any way i can specify a constant value in bulk insert command? Can i specify it in format file?
Although i can read the bcp file and do transformation in front end (C#) it is time consuming. I can bcp data and then fire a update statement to update id column, this is also found to be time consuming task.
Any help would be appriciated.
Many thanks,
Rishi
When solution is simple, God is answering….
We have a database that on a daily basis suffers from poor performance.
View 4 Replies View RelatedHow can I use constant path define in SP,
The below is my conde which gets me error, any1 knows about that ?
Thanks
Declare path nvarchar(500)
@Path = 'H:HN2000AMASTEREPPma01.mdb'
EXEC sp_addlinkedserver
@server = 'PUA01', --Server Name
@provider = 'Microsoft.Jet.OLEDB.4.0', --Provider Name
@srvproduct = 'OLE DB Provider for Jet',--Product
@datasrc = @Path
hello
I want to get output like this if i give the strings:
output:
====
25813/3
25813/115
25813/208
here "25813/" must be constant and remaining part must come in orderly way.
but in MS SQL the first inserted value is getting first i.e if we give value 25813/115 is getting first.
I will show in example:
create table number(num varchar(20))
insert into number values('25818/115')
insert into number values('25818/208')
insert into number values('25818/3')
The output coming is:
color
1 25818/115
2 25818/208
3 25818/3
BUT I REQUIRE THE OUTPUT AS:
color
1 25818/3
2 25818/115
3 25818/208
since 3 comes first than others.
If anyone knows please tell.
Or, is the only way to use "declare" and "set" only ?
View 1 Replies View RelatedI know this may be in the wrong forum, but I have a question. I am working on a system for a video store. I have rentals and sales for videos. I have set the ID fields for rentals and sales to be autonumbers and increment by 1, but I would like to have an S in front of sales IDs and R in front of rental IDs at all times. It is kind of like a constant in all autonumber ID fields. I want the S and R to be in every ID field, but the number to change. Thanks.
View 2 Replies View RelatedHi, I have a small problem with my database. I've got following situation: I have a computed column, which value is base on currency rate: rent * rate. Users have to have possibility to change currency rate easily (maybe another table or constant). Is there any way to create formula, which would compute value properly, via constant or something like this? Or the easiest workaround would be load data into dataset (I'm building asp.net application - database will be very small - couple of hundreds of records) and make calculations programmatically?
Przemek
Hi, thanks for taking a minute to help me out.
I've got a bunch of reports that have very specific formatting requirements (not mine, industry standards). Basically I need to have different headers and footers on each page, so I don't think I can use the report's headers and footers. Instead I'd like to use each table's (one for each page) set of headers and footers. This is fine for getting the data in there, but I'd like the table footer to be forced to be at the bottom of the page because having a footer halfway down just looks bad.
To summarize, is it possible to have a table footer be in the same place on a page (almost) regardless of how many rows there are returned.
pg1 pg2
header header
data data
data
footer footer
I'd prefer not to split each page into a different report and use those footers, so if there are any other hacks out there I'd really appreciate it
Thanks, Jeff
I want to run some sql code from Query Analyzer. The sql code uses parameters.How do I define the parameter before setting it to a value? I don't want to hardcode the input parameteres.
Ex:
create @Prim -- This is the line I need help on. Instead of "create", what is -- the proper way of setting this value ?
set @Prime=13
SELECT Prime.Quaternion, Gaussian.RegionId, Laplace.Primer,
recently i noticed that my trans Log size is not increasing(it is constant) , but the databse size is increasing at high speed.
why is it so? earlier the reverse used to happen i.e databse size increased only after a certain period. and log size increased at const. rate.
I have a table with date like this.
InstId--Date----Readings
--1---10/12/2008--10
--1---11/12/2008--10
--1---12/12/2008--10
--1---13/12/2008--9
--1---14/12/2008--10
--1---15/12/2008--10
--1---16/12/2008--10
--1---17/12/2008--10
--2---05/03/2008--8
--2---06/03/2008--6
--2---07/03/2008--8
--2---08/03/2008--8
--2---09/03/2008--8
--2---20/03/2008--8
Guys I want to get the date ranges instrument wise for which the instrument readings are constant.
For example for instrument 1 the readings are constant i.e 10 from 10/12/2008
till 12/12/2008 & then again it is constant from 14/12/2008 till 17/12/2008.
Same goes for instrument id 2.It is constant from 07/03/2008 till 20/03/2008.
I need to get the output like this.
StartDate EndDate Readings
10/12/2008 12/12/2008 10
14/12/2008 17/12/2008 10
17/03/2008 20/03/2008 8
Thanks for any help.
I have a data flow with a sort of transformations, the result are three columns to be inserted in a SQL Server 2005 table but I need to add a fourth column that contains the same values for each row, I mean, to add a column with constant values in the insert process.
how can I do it??
thanks.
I am interested in creating a query that will test if a value is the same in a particular field.
For example, if the value is "0", or "000", or "000000" or "333", "444444", I would like to extract it. Otherwise omit the value.
I am developing a report analog of a machine readable form that has to display a static number of detail rows regardless of the number returned from the database - i.e. if a record set has only three detail records, I need to display three blank rows, while if the record set has ten detail records, I need to display six detail records, print the footer, start a new page, repeat the header information, print the remaining 4 detail records and 2 blank rows, print the footer again and move on to the remaining recordset. I am new to report development and I'm having to pick it up on the fly. I can't seem to locate any documentation about how to handle this scenario.
I don't have the time or inclination to re-invent the wheel here, is there anyone who has solved this problem who can point me in the direction of some help?
Hi,
I have to compare a DATETIME Field with '1/1/1900 12:00:00 AM". Which is default DATE TIME Value in SQL Server.
I did compare like
TRADEAGREEMENTFROMDATE != (DT_DBTIMESTAMP)(DATEPART("mm",(DT_DBTIMESTAMP)"1/1/1900 12:00:00 AM"))
but (DT_DBTIMESTAMP)(DATEPART("mm",(DT_DBTIMESTAMP)"1/1/1900 12:00:00 AM")) returns "12/31/1800 12:00:00:AM"
Thanks,
Aravind
hi all,
when I try to do the following insert for the table test
create table test (outputs character(10), chk integer)
insert into test values('a',((select count(*) from test where outputs='a')+1))
I am getting the error
The name 'outputs' is illegal in this context. Only constants, constant expressions, or variables allowed here. Column names are illegal.
when i tried the same in DB2 it's working fine. is there anyerror in my syntax or this kind of function not allowed in SQL Server.
regards
Melb
Is there a sample way to define string constant which every stored procedure can use in SQL 2005 ? 1. In stored procedure A, there is select a1,a2,a3,a4 from mytable where usename='qaz'2. In stored procedure B, there isselect a1,a2,a3,a4 from mytable where VisitNumber>33. I hope there is a sample way to define string constant such as: constant mystring='a1,a2,a3,a4'4. So I can use this string constant both stored procedure A and stored procedure bsuch as:select mystring from mytable where usename='qaz' select mystring from mytable where VisitNumber>35. How can I do that? is there a sample way? Mnay Thanks!
View 1 Replies View RelatedI'm trying to fill a temp table whose columns are the same as another table plus it has one more column. The temp table's contents are those rows in the other table that meet a particular condition plus another column that is the name of the table that is the source for the rows being added.
Example: 'permTable' has col1 and col2. The data in these two rows plus the name of the table from which it came ('permTable' in this example) are to be added to #temp.
Data in permTable
col1 col2
11, 12
21, 22
Data in #temp after permTable's filtered contents have been added
TableName, col1 col2
permTable, 11, 12
permTable, 21, 22
What is the syntax for an insert like this?
I am using sql server 2012 and report builder 3.0 for building my report
I have a querry which produce the following output
Is there a way directly in report builder to add a new column field which need to produce the following output :
RUNNING STOCK
8 (calculated from ProductTotalWeight - StockBalance)
10 (calculated from Previous row value + StockBalance)
8 (calculated from Previous row value + StockBalance)
10 ....
8
10
8
Can this be achieved?
I have SSAS 2008 Enterprise sp2 (not R2) running on a production server. One of the dimensions is defined as real-time Rolap - set to clear the cache whenever the table changes.
I placed triggers on that table to be sure, so I know no changes occur on that table sometimes for 10 or 15 minutes at a time - and yet I get 100's of change notifications (I noticed them on a profiler session). It seems as though the notifications come as often as the dimension gets queried.
I think this is causing one of my longer running queries to fail because of locking issues. I assume this is because the queries are getting killed when they're in middle of using an outdated cache.
The strange thing is that I cannot reproduce this on the dev servers. The main difference between the dev and production servers is that the production servers are behinfd a cluster. I don't know if that could make any difference.
I really need to know why I'm getting so many notifications.
Hi All,
I am working on a column chart type (stacked column sub-type) report.
Our customer requires us that the space(padding) between the columns should be a constant(including the space between the Y-axis and the first column). I know how to set the width of the columns, but I really don't know how to set the width of the space between them. The columns just varies the space between them automatically according to the number of the columns (the number of the columns is not certain).
Thanks a lot in advance!
Danny
I want to have this query insert a bunch of XML but i get this error...
Msg 128, Level 15, State 1, Procedure InsertTimeCard, Line 117
The name "ExpenseRptID" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted.
Msg 128, Level 15, State 1, Procedure InsertTimeCard, Line 151
The name "DateWorked" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted.
What am i doing wrong...Can anyone help me out!! Thanks!!
p.s I know this query looks crazy...
Code Block
IF EXISTS (SELECT NAME FROM sysobjects WHERE NAME = 'InsertTimeCard' AND type = 'P' AND uid=(Select uid from sysusers where name=current_user))
BEGIN
DROP PROCEDURE InsertTimeCard
END
go
/*********************************************************************************************************
** PROC NAME : InsertTimeCardHoursWorked
**
** AUTHOR : Demetrius Powers
**
** TODO/ISSUES
** ------------------------------------------------------------------------------------
**
**
** MODIFICATIONS
** ------------------------------------------------------------------------------------
** Name Date Comment
** ------------------------------------------------------------------------------------
** Powers 12/11/2007 -Initial Creation
*********************************************************************************************************/
CREATE PROCEDURE InsertTimeCard
@DateCreated DateTime,
@EmployeeID int,
@DateEntered DateTime,
@SerializedXML text,
@Result int output
as
declare @NewTimeCardID int
select @NewTimeCardID = max(TimeCardID) from OPS_TimeCards
-- proc settings
SET NOCOUNT ON
-- local variables
DECLARE @intDoc int
DECLARE @bolOpen bit
SET @bolOpen = 0
--Prepare the XML document to be loaded
EXEC sp_xml_preparedocument @intDoc OUTPUT, @SerializedXML
-- check for error
IF @@ERROR <> 0
GOTO ErrorHandler
--The document was prepared so set the boolean indicator so we know to close it if an error occurs.
SET @bolOpen = 1
--Create temp variable to store values inthe XML document
DECLARE @tempXMLTimeCardExpense TABLE
(
TimeCardExpenseID int not null identity(1,1),
TimeCardID int,
ExpenseRptID int,
ExpenseDate datetime,
ProjectID int,
ExpenseDescription nvarchar(510),
ExpenseAmount money,
ExpenseCodeID int,
AttachedRct bit,
SubmittoExpRep bit
)
DECLARE @tempXMLTimeCardWorked TABLE
(
TimeCardDetailID int not null identity(1,1),
TimeCardID int,
DateWorked DateTime,
ProjectID int,
WorkDescription nvarchar(510),
BillableHours float,
BillingRate money,
WorkCodeID int,
Location nvarchar(50)
)
-- begin trans
BEGIN TRANSACTION
insert OPS_TimeCards(NewTimeCardID, DateCreated, EmployeeID, DateEntered, Paid)
values (@NewTimeCardID, @DateCreated, @EmployeeID, @DateEntered, 0)
-- check for error
IF @@ERROR <> 0
GOTO ErrorHandler
--Now use @intDoc with XPATH style queries on the XML
INSERT @tempXMLTimeCardExpense (TimeCardID, ExpenseRptID, ExpenseDate, ProjectID, ExpenseDescription, ExpenseAmount, ExpenseCodeID, AttachedRct, SubmittoExpRep)
SELECT @NewTimeCardID, ExpenseRptID, ExpenseDate, ProjectID, ExpenseDescription, ExpenseAmount, ExpenseCodeID, AttachedRct, SubmittoExpRep
FROM OPENXML(@intDoc, '/ArrayOfTimeCardExpense/TimeCardExpense', 2)
WITH ( ExpenseRptID int 'ExpenseRptID',
ExpenseDate datetime 'ExpenseDate',
ProjectID int 'ProjectID',
ExpenseDescription nvarchar(510) 'ExpenseDescription',
ExpenseAmount money 'ExpenseAmount',
ExpenseCodeID int 'ExpenseCodeID',
AttachedRct bit 'AttachedRct',
SubmittoExpRep bit 'SubmittoExpRep')
-- check for error
IF @@ERROR <> 0
GOTO ErrorHandler
-- remove XML doc from memory
EXEC sp_xml_removedocument @intDoc
SET @bolOpen = 0
INSERT OPS_TimeCardExpenses(TimeCardID, ExpenseRptID, ExpenseDate, ProjectID, ExpenseDescription, ExpenseAmount, ExpenseCodeID, AttachedRct, SubmittoExpRep)
Values(@NewTimeCardID, ExpenseRptID, ExpenseDate, ProjectID, ExpenseDescription, ExpenseAmount, ExpenseCodeID, AttachedRct, SubmittoExpRep)
select @NewTimeCardID, ExpenseRptID, ExpenseDate, ProjectID, ExpenseDescription, ExpenseAmount, ExpenseCodeID, AttachedRct, SubmittoExpRep
from @tempXMLTimeCardExpense
-- check for error
IF @@ERROR <> 0
GOTO ErrorHandler
-- For time worked...
INSERT @tempXMLTimeCardWorked(TimeCardID, DateWorked, ProjectID, WorkDescription, BillableHours, BillingRate, WorkCodeID, Location)
SELECT @NewTimeCardID, DateWorked, ProjectID, WorkDescription, BilliableHours, BillingRate, WorkCodeID, Location
FROM OPENXML(@intDoc, '/ArrayOfTimeCardWorked/TimeCardWorked', 2)
WITH ( DateWorked DateTime 'DateWorked',
ProjectID datetime 'ProjectID',
WorkDescription nvarchar(max) 'WorkDescription',
BilliableHours float 'BilliableHours',
BillingRate money 'BillingRate',
WorkCodeID int 'WorkCodeID',
Location nvarchar(50)'Location')
-- check for error
IF @@ERROR <> 0
GOTO ErrorHandler
-- remove XML doc from memory
EXEC sp_xml_removedocument @intDoc
SET @bolOpen = 0
INSERT OPS_TimeCardHours(TimeCardID, DateWorked, ProjectID, WorkDescription, BillableHours, BillingRate, WorkCodeID, Location)
Values(@NewTimeCardID,DateWorked, ProjectID, WorkDescription, BillableHours, BillingRate, WorkCodeID, Location)
select @NewTimeCardID ,DateWorked, ProjectID, WorkDescription, BillableHours, BillingRate, WorkCodeID, Location
from @tempXMLTimeCardWorked
-- commit transaction, and exit
COMMIT TRANSACTION
set @Result = @NewTimeCardID
RETURN 0
-- Error Handler
ErrorHandler:
-- see if transaction is open
IF @@TRANCOUNT > 0
BEGIN
-- rollback tran
ROLLBACK TRANSACTION
END
-- set failure values
SET @Result = -1
RETURN -1
go
I have recently installed SQL Server 2005 (Developer Ed) + SP1 onto a VMWare based Windows 2003 + SP1 server.
SQL Server works fine when connecting to it using Mangement Studio on Windows XP.
However, I have noticed strange CPU usage on the server which seems to be caused by Management Studio (either directly or indirectly).
When no-one is connecting to the server using Management Studio, the server happily ticks along with CPU usage around 1-5% range. However, as soon as someone connects to the SQL Server instance using Management Studio the CPU usage begin to go up and down constantly.
The CPU usage ranges from 5-50% and it goes up and down (fairly regularly) every few seconds. It does this even when nothing is actually being done in Management Studio. The moment Management Studio is closed, the CPU usage goes back to normal.
The processes on the server that appear to be causing the CPU spikes are services.exe and wmiprvse.exe.
On a possibly connected note (though possibly not), the Security log in the server's Event Viewer shows that there are logins occuring every minute or so (most of the logins are from my account).
Any ideas?
Need to update one table with value of a column in another table plus a constant:
UPDATE TABLE_A
SET TABLE_A.COLA=TABLE_B.COLB+'10'
FROM TABLE_A
INNER JOIN TABLE_B
ON TABLE_A.COLA=TABLE_B.COLA
WHERE TABLE_A.COLA=TABLE_B.COLA
The above statement works except the concatenated string has space between TABLE_B.COLB text and '10'. How to remove the space (4 characters) so that the string shows as one word 'TABLE_B.COLB10'?
Hello guys,
I would like to know if there is any meaningful difference in speed performance between using the DNS ("sql.server.com") or the IP address of the sql-server in the connection string.
The advantage of using DNS is that if there is any change in IP, I do not have to change the connection strings, but I do not want to loose speed because of the necessity to resolve the DNS.
Thanks for any help!
Regards,
Fabian
my favorit hoster is ASPnix : www.aspnix.com !
Dear All,
is there any difference performance wise using
select * from my_table
and
select mycol1,mycol2....mycoln from my_table
actually i've read from one article the there is big difference....
please clear my doubt...
thanks in advance
Vinod
Even you learn 1%, Learn it with 100% confidence.
Hello Everyone,
Does anyone know if there is a performance difference between the new WITH clause t-sql and the subquery?
On a basic functionality level, they seem to perform the same function but I was wondering if there are any performance difference between the 2?
Thanks,
Joseph
I have one question what is performance difference between cluster index on numeric field or string field? I know that numeric is faster but why it is faster?
View 1 Replies View RelatedI have also posted this in microsoft.public.sqlserver.programming.
I have a query which, depending on where I run it from, will either take 10 milliseconds or 10 seconds.
The query works perfectly when run in SQL Server Management Studio... in my database of around 70,000 items it returns the results in around 10ms. It uses all my indexes and indexed views correctly.
However when I run the identical query from my ASP.NET application, it takes around 10 seconds... 1000 times longer.
Looking at it in Sql Server Profiler I can't see any difference in the query, except from ASP.NET it needs 62531 reads and from SSMS it needs only 318 reads. If I copy the slow running ASP.NET query from the profiler into SSMS, then it runs quick again. The results returned are the same.
I have provided more details of the query below, but I guess my real question is: What is the best way to debug this? I'm not an expert with SQL Server, so any pointers on where I should start looking to find the difference in how the query is being executed would be a great help.
The query is of the form:
WITH RowPost AS
(
SELECT
ROW_NUMBER() OVER(ORDER BY DateCreated DESC) AS Row,
ItemId,
Title,
....
FROM
Items_View WITH(NOEXPAND)
WHERE ItemX >= @minX AND ItemX <= @maxX AND ItemY >= @minY AND ItemY <= @maxY
)
SELECT
*,
(SELECT Count(*) FROM RowPost) AS [Count]
FROM RowPost
WHERE Row >= @minRow AND Row < @maxRow
Where Items_View is an indexed view, and WITH(NOEXPAND) is being used to force it to use the indexed view (this is optimal). The line beginning "SELECT Count(*)" is to get the total number of results (without having to run the inner query a second time).
This is running against SQL Server Developer Edition.
SQL 2000 Connection String:user id=MyUserName;password=MyPassword;initial catalog=MyDB;server=MyServer;Connect Timeout=30 This SELECT statement returns its 10 results nearly instantly:SELECT * FROM MyTableDitto from above, but completes in 30-40 seconds:SELECT * FROM [dbo].[MyTable]Ditto from above, but completes nearly instantly:
SELECT TOP 1000 * FROM [dbo].[MyTable] Obviously I have stopped using the [dbo] syntax in my SqlCommand's (SELECT's and EXECUTE's) but still would like to know why this is.vr, Rich
Hello, all, I started out thinking my problems were elsewhere but as Ihave worked through this I have isolated my problem, currently, as adifference between MSDE and SQL Express 2005 (I'll just call itExpress for simplicity).I have, to try to simplify things, put the exact same DB on twosystems, one running MSDE and one running Express. Both have 2 Ghzprocessors (one Intel, one AMD), both have a decent amount of RAM(Intel system has 1 GB, AMD system has 512 MB), and plenty of GB offree disk space. MSDE is running on the Intel system, Express isrunning on the AMD system. To keep things fair I use the exact sameDB's and query on both systems. The DB's were created on MSDE so Isp_detach_db'd them from MSDE and then sp_attach_db'd them to Express(this is how MS says to do a "side-by-side" upgrade, so it'sacceptable to do so). After fighting problems in performancedifferences in different situations I have narrowed the problem downto this:Executing a simple select statement with join clause on the databasesyields a difference in execution time that is quite great. Using theExpress Management program I can run the query against either system(MSDE or Express, the two systems are connected via crossover cable toeliminate any network problems/issues). When running the queryagainst the MSDE system (which is over the network) I consistently get<20 ms response times on the query. When running the query againstthe Express installation (which is in shared memory) I consistentlyget 700 ms or longer response times. Both times are for the TotalExecution Time.The query is simply this: select db1.* from db1.owner.tablename as db1inner join db2.owner.tablename as db2 on db1.pkey = db2.someid wheredb1.criteria = 3So, gimme all the columns from one table in one DB (local to theinstallation), matching the records in another DB (also local to theinstallation), where one field in the first db matches a field in thesecond db and where, in the first db, one column value = 3.The first table has a total record count of 630 records of which only12 match the where clause. The second table has a total record countof about 2,700 of which only 12 match up on the 12 out of 630.Even though the data is the same and I've done the detach and attach,and even done the sp_updatestats, the difference in execution time isremarkable, in a bad way.Checking the Execution Plan reveals that both queries have the samesteps, but, on the MSDE system the largest consumer in the process isthe Clustered Index Scan of the 630 record table (DB1 in my queryexample), using 85%. The next big consumer is a Clustered Index Seekagainst the other table (2,700 rows), using 15%.The Execution Plan against the Express system reveals basically theexact opposite: 27% going to the Clustered Index Scan of the 630record DB1, and 72% going to the Clustered Index Seek of the 2,700record DB2.I'm sorry to be stupid but I have this information but I don't knowwhat to do with it. The best that I can tell from this is that thisis the source of my problems. My problems are that on my currentsystems that my clients use the data is returned to them faster thanthey can click the mouse and that the new system (that is, when theychose (or are forced by attrition) to move to Vista and thus Express2005) the screen pop is like 1.5 seconds. This creates poor userexperience. Worse, one process I allow the users to do goes fromtaking 14-30 seconds to over 4 minutes (all on the same machine withthe same OS and version of my program, so it's not a machine or OS ormy app problem).Anyway, I hope someone can shed some light on this now that I've paredit down some.Thanks in advance.--HC
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