Hallo,
for my project I need to calculate the estimated time an SQL statement will be running. The statements will be composed via a GUI and get become very complex. So the user needs a rough time approximation of how long to wait for the answer. A few seconds, ten minutes or several hours!?
My question:
Does anyone know good links, articles or other source to get familiar with this topic?
I'd also like to start a little discussion. On what does the runtime depend? (Is runtime the right word here?) Number of JOINs Number of different tables Size of the tables Complexity of the WHERE-Condition ("id=5" or rather "name LIKE '%foo%'") Indizes Hardware Number of users on the DBWhat else influences the time and how?
Aside from that I found the "SET SHOWPLAN_XML ON" for SQL Server 2005 to get the execution plan of the query.
But I can't find a reasonable listing of the elements and attributes and their meaning.
I think StatementSubTreeCost sound interesting. Is that the time, the statement needs to run or what does the number 0.0033205 say?
Is anyone familiar with the SHOWPLAN_XML? Or can anyone provide me a link about the values of this plan, perhaps in the Microsoft-MSDN area!?
The principle is clear. But what about the values in detail. There must be a documentation somewhere!
Hi guys, I've really been struggling with this issue for quite a while and the solution still elludes me. If anyone can help me I will worship you as a god for ever! [Wink]
The Scenario is as follows: I have a table where several documents are linked to each other via a foreign key called ReconNum. Basically this table is used to link Invoices, Credit Notes and Payments to each other. Thus you get the following layout:
I've come close, but it seems to be the old chicken or the egg problem.i.e. I need one field to calculate the other and vica-versa. (Amount Applied, DocBal and Inv Bal are all dependant on each other)
NOTE: The only field I'm really interested in is the AmountApplied field, but amount applied depends on the DocBal and InvBal fields.
I need a running balance on both the Amount Due on the Invoice, and the Amount Availble on the document being assigned to the invoices. The problem is that I'm trhowing the data into a temporary table and cant use fields in the temp table for my calculation. i.e. AppliedSum = if (Doc.Available amount on Doc < Invoice Balance) then Doc.Available Amount elseif (Doc.Available amount on Doc > Invoice Balance) then Invoice Balance
Invoice Balance = Invoice Tot - sum(Applied Amounts)
INSERT INTO MAIN VALUES ('1000', '1/1/2014',3000,1000,700,1500) INSERT INTO MAIN VALUES ('1000', '3/5/2014',1000,2000,650,200) INSERT INTO MAIN VALUES ('1000', '5/10/2014',500,5000,375,125) INSERT INTO MAIN VALUES ('1000', '11/20/2014',100,2000,400,300) INSERT INTO MAIN VALUES ('1000', '8/20/2014',100,3500,675,1300)
I am trying to do a calculation where I show the [YesEmail] / [TotalCustomers]. It wont let me do it unless i do two queries. Is there a way to put this all in this select statment.
Code:
SELECT customer_lifetime_totals.occurrence_1_store_no as [StoreNo], COUNT( case when customer.email_address IS NULL then 1 end) as [NoEmail], COUNT( case when customer.email_address IS NOT NULL then 1 end) as [YesEmail], COUNT(customer.customer_no) AS [TotalNewCustomers]
FROM customer_lifetime_totals INNER JOIN customer ON customer_lifetime_totals.customer_id = customer.customer_id WHERE (occurrence_1_transaction_date > CONVERT(DATETIME, '2006-08-01 00:00:00', 102)) GROUP BY customer_lifetime_totals.occurrence_1_store_no ORDER BY customer_lifetime_totals.occurrence_1_store_no
This works ... but only when i put the previous query in a temp table and then run another query referring to it.
Code:
cast(100*(cast(YesEmail as float) / TotalNewCustomers) as numeric (5,2)) as [Percent]
Now each table holds different measures e.g. 326, 229 & 278. I would like to subtract the measure_value of 229 from 278 and then add the measure_value from 278 from this. e.g
(326-229) + 278 = new measure_value.
This is for each id-product where the following 3 conditions meet:
the ID_PRODUCT, ID_MARKET AND ID_BUCKET match. Im lost, any help would be great.
thanks
Jay
p.s this what i have started with at the moment as a test however it dont work.
SELECT ID_PRODUCT, ID_MARKET, ID_BUCKET, ID_COLLECTION, ID_MEASURE, MEASURE_VALUE FROM (SELECT TOP 100 PERCENT dbo.DPOUT_EXCEPTIONS_326.ID_PRODUCT, dbo.DPOUT_EXCEPTIONS_326.ID_MARKET, dbo.DPOUT_EXCEPTIONS_326.ID_BUCKET, dbo.DPOUT_EXCEPTIONS_326.ID_COLLECTION, dbo.DPOUT_EXCEPTIONS_326.ID_MEASURE, dbo.DPOUT_EXCEPTIONS_326.MEASURE_VALUE + DBO.DPOUT_LSBP_229.MEASURE_VALUE as 'MEASURE_VALUE' FROM dbo.DPOUT_EXCEPTIONS_326 INNER JOIN dbo.dpout_lsbp_229 on dbo.dpout_exceptions_326.id_product = dbo.dpout_lsbp_229.id_product where dbo.DPOUT_EXCEPTIONS_326.ID_PRODUCT = dbo.dpout_lsbp_229.id_product and dbo.DPOUT_EXCEPTIONS_326.ID_MARKET = DBO.DPOUT_LSBP_229.ID_MARKET and dbo.DPOUT_EXCEPTIONS_326.ID_BUCKET = DBO.DPOUT_LSBP_229.ID_BUCKET)
IÂ am stuck in a situation where I want to use YTD for three different calendars of our company and don't want to create three different YTD calculations. However I want to make this work for any measure not for a particular measure
If I create one YTD and try to use in context of three calendars in SCOPE statements then it does not give my right results. Following is my syntax but It does not work.
SCOPE([Billing Date].[SalesCalendar].MEMBERS); ( [Aggregate].[AGGREGATE CODE].[YTD] )Â Â Â Â Â Â Â Â Â Â Â Â = Aggregate({[Aggregate].[AGGREGATE CODE].DefaultMember}*{PERIODSTODATE([Billing Date].[SalesCalendar].[Sales Calendar Year],[Billing Date].[SalesCalendar].CURRENTMEMBER) } );
[Code] ....
However if I comment on one of SCOPE statement , other one works but both don't work simultaneously in context of different calendars.
I have created calcalated measures in a SQL Server 2012 SSAS multi dimensional model by creating empty measures in the cube and use scope statements to fill the calculation.
(so I can use measure security on calculations
as explained here  )
SCOPE [Measures].[C];
THIS = IIF([B]=0,0,[Measures].[A]/[Measures].[B]);
I support a website (ASP.NET 2.0) where recently users have been unable to insert data due to timeout issues. The functionality executes a query that inserts a single row into a SQL Server 2005 db table. I tried running this query from the backend, and it took 4:48 to insert a single row! Interestingly, after that initial agony any similar inserts I tried took no time whatsoever. I have checked the execution plan, but unfortunately don't really know what I'm looking for with inserts, as most of my experience with execution plans is with select statements. Any resources anyone could point me to for troubleshooting this would be much appreciated.
I am trying to run a like statement that has a datetime column and for some reason it does not return any values. I looked in the SQL help files and in states in there that when trying to select using a datetime that the preferred way of doing it is using a like statment. Does anybody know a better way of doing this? Here is my example: (I have dates in this column ie 2006-02-13 11:30:54.220)
SELECT * FROM workorderhistory WHERE wheninstalled LIKE '%2006-02%'
I'm trying to write a script that would only update a column if it exists.
This is what I tried first:
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Enrollment' AND COLUMN_NAME = 'nosuchfield') BEGIN UPDATE dbo.Enrollment SET nosuchfield='666' END
And got the following error:
Server: Msg 207, Level 16, State 1, Line 1 Invalid column name 'nosuchfield'.
I'm curious why MS-SQL would do syntax checking in this case. I've used this type of check with ALTER TABLE ADD COLUMN commands before and it worked perfectly fine.
The only way I can think of to get around this is with:
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Enrollment' AND COLUMN_NAME = 'nosuchfield') BEGIN declare @sql nvarchar(100) SET @sql = N'UPDATE dbo.Enrollment SET nosuchfield=''666''' execute sp_executesql @sql END
which looks a bit awkward. Is there a better way to accomplish this?
When I run this query against PFGDSMRISSQLQ1 in Server manager 2005:use <database>INSERT INTO dbo.<table> (<column1>, <column2>, <column3>)VALUES (12598,2900,1.00)I get this error:Msg 8624, Level 16, State 1, Line 5Internal Query Processor Error: The query processor could not produce a query plan. For more information, contact Customer Support Services.Can someone please help. Thanks!
SQL Ver: 2008 (not r2) Problem: The following code returns correct results when moving variable declarations and update statement outside a stored procedure, but fails to return a value other than zero for the "COMPANY TOTAL" records. The "DEPT TOTAL" result works fine both in and outside the sp.This may have to do with handling NULL values since I was getting warning message earlier involving a value being eliminated by an aggregate function involving a NULL. I only got this message when running inside the sp, not when running standalone. I wrapped the values inside the SUM functions with an ISNULL, and now return a zero rather than NULL for the "COMPANY TOTAL" records when running inside SP.All variable values are correct when running.
SQL CODE: DECLARE     @WIPMonthCurrent date = (SELECT TOP 1 WIPMonth FROM budxcWIPMonths WHERE ActiveWIPPeriod = 'Y')   select @WIPMonthCurrent as WIPMonthCurrent   [code]....
In my environment, there is maintenance plan configured on one of the server and while running DBCC checkdb on a database of size around 200GB, log file usage of tempdb is increasing and causing the maintenance job to fail.
What can I do to make the maintenance job run successfully, size of the tempdb database is only 50GB and recovery model is set to simple. It cannot be increased as the mount point on which it is residing is 50GB.
If I start a long running query running on a background thread is there a way to abort the query so that it does not continue running on SQL server?
The query would be running on SQL Server 2005 from a Windows form application using the Background worker component. So the query would have been started from the background workers DoWork event using ado.net. If the user clicks an abort button in the UI I would want the query to die so that it does not continue to use sql server resources.
One of my stored procs, taking one parameter, is running about 2+ minutes. But if I run the same script in the stored proc with the same parameter hardcoded, the query only runs in a couple of seconds. The execution plans are different as well. Any reason why this could happen? TIA.
My predicament is - where do I do these calculations - in my vb.net code or in an SQL stored procedure?
My manager has handed me a task of converting an excel file she uses in to a web aplication.
While it has been easy to devise what should be the screens and how to capture data, I am struggling over how to code the calculations.
The calculations in excel are pretty simple. These are just sequential calculations (about a 150 calculation for average 500 rows). Mathametical operations include sum, average, max min - regular excel stuff. Some calculations involve vlookup (equvalent to calculation based on value derived from a reference table).
So I am stil wondering - where do I do these calculations - in my vb.net code or in an SQL stored procedure?
Since these calculations are required a produce a result in an online environment, what will be faster?
I tried to do a proof of concept by creating a sample calculation in a .NET class and an in a stored procedure. The choice is still not clear. SQL code execution time was not bad. But SQL code tended to be very messy.VB.net code seemed to be a little slow. But seemed a more organised to look at.
Any views that you can offer will be very helpful.
I need to calculate the overall GPA for a student in a particular class.
YEAR SCHOOL STUDENT IDENT GRADE TEACHER CLASS GPA 2007 Snow Canyon High Student1 321649 10 Teacher1 Earth Systems 0.0000 2007 Snow Canyon High Student1 321649 10 Teacher1 Earth Systems 1.6700 2007 Snow Canyon High Student1 321649 10 Teacher1 Earth Systems 3.3300 2007 Snow Canyon High Student1 321649 10 Teacher1 Earth Systems 3.6700 2007 Snow Canyon High Student1 321649 10 Teacher2 Elementary Algebra 0.0000 2007 Snow Canyon High Student1 321649 10 Teacher2 Elementary Algebra 0.6700 2007 Snow Canyon High Student1 321649 10 Teacher2 Elementary Algebra 1.0000
The problem I'm having is that a student may not taken the class for four terms (as in the Elementary Algebra example above). So I can't hard code it to sum the gpa and divide by 4; it needs to be the number of terms the student took the class.
Here's my sql:
select trnscrpt.schyear as [Year], school.schname as School, rtrim(stugrp_active.lastname) + ', ' + rtrim(stugrp_active.firstname) as Student, trnscrpt.suniq as suniq, stugrp_active.graden as Grade, trnscrpt.teachname as Teacher, trnscrpt.descript as Class, gpamarks.gpavallvl0 AS GPA
from dbo.trnscrpt inner join dbo.stugrp_active on trnscrpt.suniq = stugrp_active.suniq INNER JOIN school ON stugrp_active.schoolc = school.schoolc INNER JOIN gpamarks ON trnscrpt.marksetc1 = gpamarks.marksetc AND trnscrpt.markawd1 = gpamarks.mark
where trnscrpt.graden >= 6 and trnscrpt.markawd1 not in ('NC','NG','P','W','WA','WF','WI','WP') and trnscrpt.subjectc in ('LA', 'MA', 'CP', 'CB') and trnscrpt.schyear = 2007 and stugrp_active.schoolc = 725
In period = 2, status code change from InStock to OutOfStock: Product 1 (Count=1) In period = 1, number of products with status code = InStock: product 1 and product 2 (Count=2)
sector RefDate price pharm 22 august 2007 100.21 gap 15 august 2007 10.32 pharm 21 august 2007 99.99 pharm 9 oct 2007 100.99 pharm 2 oct 2007 98.34 pharm 8 oct 2007 96.34 ...
I would like to have the result as follows: sector RefDate price priceChangeSinceYesterday priceChangeSinceLastWeek priceChangeSinceLastMonth pharm 9 oct 2007 100.99 100.99-96.34 100.99-98.34 100.99-lastmonth's price value
select sector, RefDate, price, priceChangeSinceYesterday??, priceChangeSinceLastWeek???, priceChangeSinceLastMonth?? from table1
My aim is to do something like what I have explained below and I was planning on building this logic at the Database level only rather than on the frontend code.
There are certain allocations(transactions) that happen on a periodic basis and I am storing these transactions in the PurchaseTranMaster and PurchaseTranDetail table. These transactions are categorized as 'Main' type and the amount could be allocated for one or many categories in a single transaction. Below is how it will be saved in the 2 table
PurchaseTranMaster
TranID TranDate TranType 1 14-March-2008 Main 2 17-March-2008 Main 3 1 9-March-2008 Main
PurchaseTranDetail
TranID Amount Category Debit_TranId 1 1000 A 1 1000 B 2 2000 B 3 300 A 3 400 C
Now what happens is users of my application can make purchases under all these categories only until the Balance under these categories is > than purchase amount. The Balance is calculated as sum of all transactions. It means that w.r.t the above data the balances for each category is(this is not stored in the database)
A 1300 B 3000 C 400
So lets say a user does make a purchase(Trantype is 'SUB') of 300 under A and 400 under B in a single transaction. The data would then be stored in the tables as
PurchaseTranMaster
TranID TranDate TranType 1 14-March-2008 Main 2 17-March-2008 Main 3 19-March-2008 Main 4 20-March-2008 SUB
PurchaseTranDetail
TranID Amount Category Debit_TranId 1 1000 A 1 1000 B 2 2000 B 3 300 A 3 400 C 4 300 A 1 4 400 B 1
In the PurchaseTranDetail the Debit_TranId value means that the amount has been marked against the TranID 1. This TranId is not handpicked by the user and the system should allocate it accordingly based on the amount available for a particualar category for a Main Transaction. It means that before TranId 4 was saved in the database then the system would first check whether the Total available balance for A >=300 and B>=400 (in our example above it is 1300 and 3000 resp) Then if the Balance is > than the puchase amount then the allocation would be done by the system and this would be done against the TranID whose TranDate was the earliest, so thats why the Debit_TranId column has 1 as TranId 1 was the earliest.so logically now the balance for the categories would be (this is not saved in the database)
A 1000 B 2600 C 400
So next time again when a user would make a purchase(transaction) under A for 800 and under B for 1000 then if the balance is greater than the purchase amount(which in this case it is) the allocation would happen according to the earliest TranId and this time amount would be partly marked against TranId 1 , TranID 2 and TranID 3. The data would look like this
PurchaseTranMaster
TranID TranDate TranType 1 14-March-2008 Main 2 17-March-2008 Main 3 19-March-2008 Main 4 20-March-2008 SUB 5 21-March-2008 SUB
TranID Amount Category Debit_TranId 1 1000 A 1 1000 B 2 2000 B 3 300 A 3 400 C 4 300 A 1 4 400 B 1 5 700 A 1 5 100 A 3 5 600 B 1 5 400 B 2
I need to do the above taking into consideration that there could be multiple users making purchases(concurrency). Also I was building my logic on doing the above whether to use cursors or loops. I just need to know how do I write my stored procedure and what would be the most efficeint way of doing the above.
The design for creating the above sample tables is below
insert into PurchaseTranMaster values(convert(datetime,' 14-March-2008',103),'Main') insert into PurchaseTranMaster values(convert(datetime,' 17-March-2008',103),'Main') insert into PurchaseTranMaster values(convert(datetime,' 19-March-2008',103),'Main') insert into PurchaseTranMaster values(convert(datetime,' 20-March-2008',103),'SUB') insert into PurchaseTranMaster values(convert(datetime,' 21-March-2008',103),'SUB')
insert into PurchaseTranDetail values(1,1000,'A',0) insert into PurchaseTranDetail values(1,1000,'B',0) insert into PurchaseTranDetail values(2,2000,'B',0) insert into PurchaseTranDetail values(3,300,'A',0) insert into PurchaseTranDetail values(3,400,'C',0) insert into PurchaseTranDetail values(4,300,'A',1) insert into PurchaseTranDetail values(4,400,'B',1) insert into PurchaseTranDetail values(5,700,'A',1) insert into PurchaseTranDetail values(5,100,'A',3) insert into PurchaseTranDetail values(5,600,'B',1) insert into PurchaseTranDetail values(5,400,'B',2)*/
I´m working on SSRS 2005 trying to calculate YTD for the total sale. This is what I got so far:
Code Snippet
WITH MEMBER [Measures].[YTD Amount] AS 'SUM(PeriodsToDate([DATE].[Year]),[Amount])' SELECT {[Measures].[Amount],[Measures].[YTD Amount]} ON COLUMNS, [DATE].[Month].Members ON ROWS FROM [SKY] My Date hierarcy is: Year Month
When running this query all I get is very small number for Amount column, almost zero for all months and the YTD Amount Column is only showing (null).
Hello Friends I have 3 tables 1) Product Id, ShortName 2) IncomingStockId, ProductId, Quantity, InDate 3) OutGoingStock Id, OutDate, ProductId, Quantity I need to get the results like thisProduct name, quantity in stock today the "quantity in stock today" = sum (quantity recieved) -sum (quantity sent) Thank you for your timeSara
Hi. i have the code : cmd = New SqlCommand("SELECT sales,country,year FROM salesTable WHERE (country = " & (CountryBlk) & " AND branch = " & (NameSnif) & " AND datepart(yyyy,year)=" & (YearBlk) & ") order by datepart(mm,year) ", cnn) cnn.Open() rdr = cmd.ExecuteReader( _ CommandBehavior.CloseConnection) While x < 12 If rdr.Read = Nothing Then Exit While End If varcount(x) = rdr("sales") TempMonth = rdr("year") MonthNumber(x)=datepart(DateInterval.Month,TempMonth) x = x + 1 End While
i want to calculate and put into the varcount(x) value all sales of the same month
I need to create a user defined function to calculation the difference between today and a future date. The result needs to be in days, hours, and minutes formatted as per the following example: 1d / 4h / 30m. I have a moderate level of SQL exprience. however, I would appreciate some expert advice as the best way to approach this.
hello everyone, I have a problem of calculating a date, for example, how do i find out the begining date of the week and ending date of the week for certain date, and how do i find out the beginning date of the month and end date of the month for a certain date, thanks
Hi All! I need a query to find all dates from today to one-year back. If I start from today day I need find all dates until 11/12/98. Thanks a lot. Greg.
I have scenerio that find out the Bandwitdh size between clint and server. I wanted find out howmuch size of data recieveing from server at a time. Any advice regarding this. Thanks, Ravi
HI, getdate() gives me today's date. I have a sql query which returns me a date. I want to see if the difference between today's date and the date returned by sql query is 12 months(1 year) or less. If yes I want to print it. (If the difference is more than 12 months or 1 year i don't want to consider that record.)
Example: how to do calculate: 10/05/2004-10/3/2003
how do i calculate something like this if I have the table with names and count? Name Count Percent Name1 27 4.69% Name2 2 0.35% .... Totals 576 100.00%
I am performing a calculation in both SQL and MSACCESS. ACCESS is correct and SQL is not. It is off by -.05 Here is the calculation:
Sum((ch.FaceAmount)-(((ch.FaceAmount*Ex.CAN_Exchange_Rate+0.005)*100)/100)) AS TransAmount,
Both FaceAmount and CAN_Exchange_Rate are defined as money in a SQL table. The ACCESS front-end attaches this table, so it uses the same columns in the calculation.
Now, I know SQL looks at money with 4 decimal places. The attached SQL tables in ACCESS looks at these columns as currency which I believe is 2 decimal places. I think this is where the descrepency is. But it still doesn't explain why SQL is calculating the incorrect total.
