SQL Server 2012 :: Cumulative Average Without Cursor
Jul 29, 2015
I am trying to calculate cumulative GPA which is currently it is being done via a cursor and i was looking to change it to set based if possible.
The cumulative GPA is basically the average marks of all courses in a term and all previous terms. Where I am having an issue is if the course was taken in a previous term and the mark was lower, then the lower mark in not factored in to the GPA. If a course was taken in a previous term and the mark was higher then the marks for the current term are not factored into the GPA.
In the example below, math is taken in all three terms and the current term's mark is included in the GPA but not the previous terms because current terms mark is higher. Two classes (bio,chem) are taken in third term but not included due to marks being higher in second term.
CREATE TABLE [gpa]([term] int,
[course] varchar(10),
[mark] float);
INSERT INTO [gpa]
VALUES (1,'math',3),
(1,'eng',4),
[Code] .....
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Sep 29, 2015
I have a SQL Server at version Microsoft SQL Server 2012 - 11.0.5343.0 (X64)
May 4 2015 19:11:32
Copyright (c) Microsoft Corporation
Enterprise Edition (64-bit) on Windows NT 6.3 <X64> (Build 9600: ) (Hypervisor).
I need to apply a cumulative update, either CU2 or CU3 for a third party tool used for monitoring to work. When I try to apply CU2 or any subsequent CU there is nothing that need the update so I cannot advance the version to 11.00.5548.
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Feb 16, 2014
i'm building a query to return metrics that will drive 3 seperate pivot tables showing
1. Total count of LineItems per D_Type each month
2. Total count of LineItems per Status each month
3. Avg count of LineItems per Invoice each month
I am able to get the first two, but having hard time with the 3rd.
Here's some representative ddl
create table Remediation
(Invoice nvarchar(10), D_Type nvarchar(20), Status nvarchar(20), RemediationDate datetime);
insert into Remediation values
--this will create data for Jan, 2014
('501', 'Recycle', 'Pass', getdate()-30),
('501', 'Reuse', 'Pass', getdate()-30),
('501', 'Remarket', 'Fail', getdate()-30),
[code]....
how to add the average metric to this query?
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Jul 30, 2007
ID DATE(dd/mm/yy) TYPE QTYIN COST_IN_AMT COST_OUT_AMT(MOVING AVERAGE)
1 01/01/2007 PURCHASE 10 1000
2 01/01/2007 PURCHAES 5 1100
3 01/01/2007 SALES -5 *TobeCalculated
4 02/01/2007 Purchase 20 9000
5 02/01/2007 SALES -10 *TobeCalculated
5 02/01/2007 purchase 50 8000
6 03/01/2007 Sales -10 *TobeCalculate
7 01/01/2007 Purchase 20 12000
I have a table when user add new sales or puchase will be added to this table ITEM_TXNS. The above date is part of the table for a ProductID . (The field is removed here)
In order to calculate the balance amount using moving average, I must calculated the cost_out_amt first on the fly.
When user add new sales I also need to determine the cost/unit for a product id using moving average. The problem is I can not just use sum, because i need to determine cost_out_amt for each sales first which will be calculated on the fly.
The reason i dont store the cost_out_amt (instead calculate on the fly) because User could Edit the previous sales/purchase txn or Insert new sales for a previous date. Example THe record with ID 9. By Adding this txn with ID 9, would cause all the cost_out_amt will be incorrect (Using moving Average) if i store the cost_amout_out on entrying txn and need to be recalculated.
Instead I just want to calculate on the fly and able to determine the cost avr for a specific point of time.
Should I just use Cursor and loop all the record and calculate the cost or maybe I can just use on Select Statement?
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Mar 4, 2014
What's the most straight forward to determine what the last cumulative update was that was applied to SSMS?
I know that CU8 is out for SQL Server 2012, I just need to confirm which (if any) update was last applied to SSMS I'm currently looking at.
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Oct 19, 2015
adding a if statement within my cursor.
Use master
GO
DECLARE @dbname VARCHAR(50)
DECLARE @statement NVARCHAR(max)
DECLARE db_cursor CURSOR
LOCAL FAST_FORWARD
[code]....
The cursor should only grant access to a particular database. If the user exists within the database it should not execute the script.
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Feb 16, 2014
I have a table called Table1 where I have five fields like Tableid, Processigndate, Amount, remainingCollectonCount and Frequency. All total I have more than 5Lacs records.
Now I need to fill up another table Called FutuecashFlow taking the records from Table1. There will be also five Columns like FutureCashflowid, Table1id, Processigndate, Amount.
Now the condition is that if the remainingCollectonCount =6 and the frequency is 12 then there will be the 6 entries in the futurecasflow table where the prcessign datae wille be addeed by 1 month.
For example Table1
Tableid, Processigndate Amount remainingCollectonCount Frequency
1 2014-02-15 48 8 12
the future cash flow table the prcessing date column will be shown in the following way
Processigndate
2014-03-15
2014-04-15
2014-05-15
2014-06-15
2014-07-15
2014-09-15
2014-10-15
I do not to want to use cursor....
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Mar 20, 2015
I need to use WHILE to avoid Cursor under certains conditions.
My SELECT statement is:
SELECT ref, ano, numberofyears ,nreint, naoreint,degress,
tabela, tax, taxamaxima,[evactual],
[evaldepact],[ereintact],nrregbt,[taxAmtAno]
FROM deprec
ORDER BY [ref] ASC
numberofyears= 100 /tax for exemple for a good where lifecycle is 4 years ,ex:
Tax = 25% Then 100/25 = 4 years
I see this WHILE script, but i need to run :
1. for each REF + Until years < 4 in this exemple, because i have goods years depend on Percent.
the WHILE script i see is:
DECLARE @table1 TABLE (Id int not null primary key identity(1,1), col1 int )
INSERT into @table1 (col1) SELECT col1 FROM table2
SET @num_rows=@@ROWCOUNT
SET @cnt=0
WHILE @cnt<@num_rows
[Code] .....
My doubt is how to make the LOOP for each REF until Year < 4 (like my example)
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Aug 21, 2015
I like to backup the stored procedures' code used in my databases. So I created this Script:
/*
IF OBJECT_ID('[Monitor].[dbo].[Procedurecode]') IS NOT NULL DROP TABLE [Monitor].[dbo].[Procedurecode];
*/
DECLARE
@db nvarchar(50),
@strSQL nvarchar (100)
IF CURSOR_STATUS('global','cur1')>=-1 BEGIN DEALLOCATE cur1 END
[code]....
Problem is (and I seem not to be the only one with tis) described here:
"If the executed string contains a USE statement that changes the database context, the change to the database context only lasts until sp_executesql or the EXECUTE statement has finished running." There is nothing magical in SQL server that knows you intend a series of dynamic sql commands to be part of a single job running in a single context. You have to build the entire string for the job you want to execute."
[URL]
So I only get the SPs of the current database.
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Oct 22, 2015
I am writing a custom query to determine if a legacy table exists or not. From My CMS Server I already have all the instances I have to query and I store the name of the instance in the @Instance variable. I cannot get those stubborn ticks to work right in my query. Below I am using the IF EXISTS statement to search the metadata for the legacy table.
DECLARE @Found tinyint
DECLARE @Instance varchar(100)
set @Instance = 'The Instance'
IF (EXISTS (SELECT a.*
FROM OPENROWSET('SQLNCLI', 'Server=' + @Instance + ';UID=DBAReader;PWD=DBAReader;','SELECT * FROM [DBA].INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ''TheTable''') AS a))
SET @Found = 1
ELSE
SET @Found = 0
PRINT @Found
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Jul 10, 2014
I have a situation where I need to call a stored procedure once per each row of table (with some of the columns of each row was its parameters). I was wondering how I can do this without having to use cursors.
Here are my simulated procs...
Main Stored Procedure: This will be called once per each row of some table.
-- All this proc does is, prints out the list of parameters that are passed to it.
CREATE PROCEDURE dbo.MyMainStoredProc (
@IDINT,
@NameVARCHAR (200),
@SessionIDINT
)
AS
BEGIN
[Code] ....
Here is a sample call to the out proc...
EXEC dbo.MyOuterStoredProc @SessionID = 123
In my code above for "MyOuterStoredProc", I managed to avoid using cursors and was able to frame a string that contains myltiple EXEC statements. At the end of the proc, I am using sp_executesql to run this string (of multipl sp calls). However, it has a limitation in terms of string length for NVARCHAR. Besides, I am not very sure if this is an efficient way...just managed to hack something to make it work.
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Aug 28, 2015
I have a temptable with a list of user IDs that I want to drop so I created a script to do a cursor and run through my drop functions. The drops work by themselves and the ver check works with them but when I wrap them in the cursor all i get is an output for each user in the results window in ssms. why it's not setting the variable and instead outputting to results?
DECLARE @ver nvarchar(128);
DECLARE @UserName nvarchar(50);
DECLARE @UserD nvarchar(80);
DECLARE @LoginD nvarchar(80);
-- Initialize the variable.
SET @ver = CAST(serverproperty('ProductVersion') AS nvarchar)
[code]...
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Oct 16, 2015
I need removing cursor in my table valued function with alternate code.
ALTER FUNCTION [dbo].[eufn_e5_eSM_SE_GetCurrentContentForContainer]
(
@containerSqlId SMALLINT,
@containerIncId INT
)
RETURNS @Results TABLE
[Code] ....
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Oct 29, 2015
This store procedure will get some executable queries from the select statement, the cursor will fetch each rows to execute the query and insert the queries into table_3 to mark as 'E'. Until 17:00, this store procedure will stop execute the queries and just get the queries from select statement insert into table_3 to mark as 'C'.
I don't know why the outputs in table_3 are quiet different than I think. This store procedure comes out with two exactly same queries and one marked as C and another marked as E.
CREATE PROCEDURE procedure1
AS
DECLARE cursor_1 CURSOR FOR
SELECT
'This is a executable query'
FROM table_1
DECLARE @table_2
[code]....
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Jan 17, 2015
I would like to find the average salary for each department which has min salary
In my case I will have 3 departments which have min salary.
select distinct d.department_name, E.SALARY, avg(E.salary)
FROM EMPLOYEES E JOIN DEPARTMENTS D
ON (E.DEPARTMENT_ID = D.DEPARTMENT_ID)
WHERE E.SALARY = (SELECT MIN(E.SALARY)
FROM EMPLOYEES E JOIN DEPARTMENTS D
ON (E.DEPARTMENT_ID = D.DEPARTMENT_ID))
GROUP BY D.DEPARTMENT_NAME, E.SALARY;
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Mar 6, 2015
I have stored procedure .In SP i am using cursur to load data from Parent to several child table.
I have attached the script with this message.
And my problem is how to use direct select and insert or load to speedup the process instead of cursor.
USE [IconicMarketing]
GO
/****** Object: StoredProcedure [dbo].[SP_DMS_INVENTORY] Script Date: 3/6/2015 3:34:03 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
[Code] ....
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May 25, 2015
Here the SELECT query is fetching the records corresponding to ITEM_DESCRIPTION in 5 separate transactions. How to change the cursor to display the 5 records in at a time in single transactions.
CREATE TABLE #ITEMS (ITEM_ID uniqueidentifier NOT NULL, ITEM_DESCRIPTION VARCHAR(250) NOT NULL)INSERT INTO #ITEMSVALUES(NEWID(), 'This is a wonderful car'),(NEWID(), 'This is a fast bike'),(NEWID(), 'This is a expensive aeroplane'),(NEWID(), 'This is a cheap bicycle'),(NEWID(), 'This is a dream holiday')
---
DECLARE @ITEM_ID uniqueidentifier
DECLARE ITEM_CURSOR CURSOR
[Code] ....
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Jul 2, 2015
so async cursor population is supposed to create the cursor and return the cursor id quickly, while the server works on async populating the results. For a keyset-driven cursor, SQL Server stores the key sets in tempdb, which it then uses to fetch data for cursor results. Anyway, this works fine for smaller tables, but I'm finding for large result sets, the async cursor population is very slow and indeed seems to approximate synchronous time. The wait stat I get while it is running (supposedly asynchronously) is TRANSACTION_MUTEX.
Example:
--enable async cursor
exec dbo.sp_configure 'cursor threshold', 0; reconfigure;
declare @cursor int, @stmt nvarchar(max), @scrollopt int, @ccopt int, @rowcount int;
--example of giant result set
set @stmt = 'select * from sys.all_objects o1, sys.all_objects o1';
[code]...
Note that using the SQL "select * from sys.all_objects o1" is much faster than "select * from sys.all_objects o1, sys.all_objects o2". However, if cursor population is async, I'd expect the time to return a cursor id to be similar between the two.
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Mar 3, 2014
I work for a school district and new requirement we were just given for scoring some student scores.
Everything will currently be in one table to keep track of students test scores for various things. This table will contain students information and a student will be shown more than once in the table. The Student ID is what we will key off of to find the multiple instances of the student. The table contains the following columns: studentName, StudentId, teacherName, focus1, controllingIdeas1, reading1, development1, organization1, conventions1, and contentUnderstanding1. All of the columns with a 1 at the end will be numeric values with possible decimal values.
What we need to be able to do is some how perform a search for these multiple entries of each student and when found, average the 2 scores for each 7 test categories. The result needs to be a single line for each student that gives the student name, student id, and the 7 test category averages exported to an csv file.
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Jun 21, 2015
Calculation of an average using DAX' AVERAGE and AVERAGEX.This is the manual calculation in DW, using SQL.In the tabular project (we're i've noticed that these 4 %'s are in itself strange), in a 1st moment i've noticed that i would have to divide by 100 to get the same values as in the DW, so i've used AVERAGEX:
Avg_AMP:=AVERAGEX('Fct Sales';'Fct Sales'[_AMP]/100)
Avg_AMPdollar:=AVERAGEX('Fct Sales';'Fct Sales'[_AMPdollar]/100)
Avg_FMP:=AVERAGEX('Fct Sales';'Fct Sales'[_FMP]/100)
Avg_FMPdollar:=AVERAGEX('Fct Sales';'Fct Sales'[_FMPdollar]/100)
The results were, respectively: 701,68; 2120,60...; -669,441; and finally **-694,74** for Avg_FMPdollar.i can't understand the difference to SQL calculation, since calculations are similar to the other ones. After that i've tried:
test:=SUM([_FMPdollar])/countrows('Fct Sales') AND the value was EQUAL to SQL: -672,17
test2:=AVERAGE('Fct Sales'[_Frontend Margin Percent ACY]), and here, without dividing by 100 in the end, -696,74...
So, AVERAGE and AVERAGEX have a diferent behaviour from the SUM divided by COUNTROWS, and even more strange, test2 doesn't need the division by 100 to be similar to AVERAGEX result.
I even calculated the number of blanks and number of zeros on each column, could it be a difference on the denominator (so, a division by a diferente number of rows), but they are equal on each row.
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Feb 15, 2008
I have a temp_max column and a temp_min column with data for every day for 60 years. I want the average temp for jan of yr1 through yr60, averaged...
I.E. the avg temp for Jan of yr1 is 20 and the avg temp for Jan of yr2 is 30, then the overall average is 25.
The complexity lies within calculating a daily average by month, THEN a yearly average by month, in one statement.
?confused?
Here's the original query.
accept platformId CHAR format a6 prompt 'Enter Platform Id (capital letters in ''): '
SELECT name, country_cd from weather_station where platformId=&&platformId;
SELECT to_char(datetime,'MM') as MO, max(temp_max) as max_T, round(avg((temp_max+temp_min)/2),2) as avg_T, min(temp_min) as min_temTp, count(unique(to_char(datetime, 'yyyy'))) as TOTAL_YEARS
FROM daily
WHERE platformId=&&platformId and platformId = platformId and platformId = platformId and datetime=datetime and datetime=datetime
GROUP BY to_char(datetime,'MM')
ORDER BY to_char(datetime,'MM');
with a result of:
NAME_________________CO
-------------------- --
OFFUTT AFB___________US
MO______MAX_T _____AVG_T__MIN_TEMTP_TOTAL_YEARS
-- ---------- ---------- ---------- -----------
01_________21______-5.31________-30__________60
02_________26______-2.19______-28.3__________61
03_______31.1_______3.61______-26.1__________60
04_______35.6______11.07______-12.2__________60
05_______37.2_______17.2_______-3.3__________60
06_______41.1______22.44__________5__________60
07_______43.3______24.92________7.2__________60
08_______40.6______23.71________5.6__________60
09_________40______18.84_______-2.2__________59
10_______34.4_______12.5_______-8.9__________59
11_________29_______4.13______-23.9__________60
12_________21______-2.52______-28.3__________60
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Jul 20, 2005
Hello all,I've got a query which suddently became very slow. It now takes about 10secs instead of 2 secs.I've got to identical DB (one is for test and the other is production). Thequery is slow only in production.When running this query in both DB and looking at execution plan,statistics, etc, the onle difference is the Cumulative wait time on serverreplies.In test DB, I get the value: 2200And in production DB: 1.22344e+009What does this mean concretly? What do I have to do to solve this problem?TIA.YannickPS I'm using SS2000 SP3 on NT4.0
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Aug 3, 2006
I'm trying to install the cumulative hot fix (build 2153) on an x86 machine. I'm running the first of the six install EXEs, and I'm not able to select any of the checkboxes on the Feature Selection tab of the wizard.
I see three checkboxes. The first is SQL Server Database Services 2005 and beneath it two child nodes: MSSQLSERVER (RTM 1399 ENU) and SQLEXPRESS (RTM 1399 ENU)
None of the checkboxes allow me to select them and when I click the Next button on the screen I get the following:
"You have not selected any active products or instances. You must select at least one active product or instance to patch in order to proceed."
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Feb 6, 2014
Query to get CU# of sql server Instance ?
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Jul 15, 2014
I have table A
|account | Unmort |
| A |10.000.000 |
and a Table B
|account| Jenis | Nominal | Unmort |Total|
-------------------------------------------
| A | 021 | 200.000| - | - |
| A | 028 | 3.200.000| - | - |
| A | 023 | 7.200.000| - | - |
how to update to be like this??
|account| Jenis |Nominal | Unmort |Total |
| A | 021 |200.000 | - |200.000 |
| A | 028 |3.200.000 | 2.800.000 |400.000 |
| A | 023 |7.200.000 | 7.200.000 | 0 |
for this type of account number jenis 021 Field Unmort Fill set= 0 and Field Total must not be a minus...
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Apr 14, 2015
I have a table that has the following data
ID
---
101
102
105
108
124
189
I need to call a stored proc for each of the IDs above. Our existing code which has a cursor to loop through the table and call the proc for each value is proving to be a performance nightmare. Is there an alternate method that I can use to avoid cursor and make it more efficient?
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Feb 28, 2014
I'm having a fight with Reporting Services at the minute when trying to compute an average at the row group level for a value summed in a column group.I have the following column groups:
Year
Month
Date
And the following row groups:
Region
Product
SubType (hidden, data at the date level is summed to Product)
At the moment I'm computing the average for SubType for each Date at the Product level (giving a decimal value), so for each day I end up with a nice average, that works. However I am unable to average that average over the whole Year for a Product. The issue being that I'm trying to combine Row Groups (Product) and Column Groups (Date/Year)
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Mar 8, 2007
I've read about this hotfix at http://www.kbalertz.com/Feedback_933097.aspx but I can't find anything on microsoft.com about it. It sounds like a worthwhile hotfix, but I'm wondering about the absence of an announcement on microsoft.com.
Anyone else know about this hotfix?
Thanks!
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Jun 11, 2007
ok so i have this table:
Code:
Products_Sold
priceSold - money
itemsSold - int
An example of 4 rows on my table would be like this
$1400 80
$1500 85
$1560 82
$1700 81
to calculate the average of the price sold related to the number of sold items just have to do
Select avg(priceSold*itemsSold)
But sometimes i just want the average price of the first 100 sold items, so how can i make my query to just use the first 100 sold items?
in math it would be like this
average= ( (1400*80) + (1500*20) ) / 100
but if i wanted the first 200 it would be like this
average= ( (1400*80) + (1500*85) + (1560*35)) / 200
and if i wanted the first 300 would be like this
average= ( (1400*80) + (1500*85) + (1560*82) + (1700*53)) / 300
but of course the number i want will always be a variable which is less than the total of the products sold. So, how the heck do i program this query where the number of the items sold is variable and it will take the rows of the database depending on how many items were sold.
I hope i didnt wrote my explanation too confusing and that i can get any help from you guys. thank you a lot for the help and byye
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May 4, 2007
I have a SQL Server hosted on a Win2003 server. I have a monitor on the server letting me know the average download speeds. When I do a large select from a remote connection, it looks like the download rate maxes out at around 10 kb/sec.
Is this an average download rate for a server hosting sql server?
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Aug 20, 2015
I've been asked to find the Mode of the loads on trips we run. So I run a count on the [loads] (without grouping, in an analytical function) column, then sort on the highest counts. The problem is when there is a tie. In that case, I need to find the mean of all the tied values. This means that if there is no mode at all, it would simply take the mean of all the values.
Here is sample data:
CREATE TABLE test6
(
trip char(1) NULL,
date int NULL,
loads int NULL
[Code] ...
And here is what I'd like to see:
CREATE TABLE test7
(
trip char(1) NULL,
loads int NULL
)
insert into test (trip, loads)
values ('A', 15)
insert into test (trip, loads)
values ('B', 17)
insert into test (trip, loads)
values ('C', 11)
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Jun 28, 2015
I have a table that writes daily sales each night but it adds the day's sales to the cumulative total for the month. I need to pull the difference of todays cumulative total less yesterdays. So when my total for today is 30,000 and yesterday's is 28,800, my sales for today would be 1,200. I want to write this to a new field but I just can't seen to get the net sales for the day. Here is some sample data. For daily sales for 6-24 I want to see 2,000, for 6-25 3,000, 6-26 3,500, and 6-27 3,500. I'm thinking a case when but can't seem to get it right.
CREATE TABLE sales
(date_created date,
sales decimal (19,2))
INSERT INTO sales (date_created, sales)
VALUES ('6-23-15', '20000.00'),
('6-24-15', '22000.00'),
('6-25-15', '25000.00'),
('6-26-15', '28500.00'),
('6-27-15', '32000.00')
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Aug 12, 2015
In MSDN file I read about static cursor
STATIC
Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table in
tempdb; therefore, modifications made to base tables are not reflected in the data returned by fetches made to this cursor, and this cursor does not allow modifications
It say's that modifications is not allowed in the static cursor. I have a questions regarding that
Static Cursor
declare ll cursor global static
for select name, salary from ag
open ll
fetch from ll
while @@FETCH_STATUS=0
fetch from ll
update ag set salary=200 where 1=1
close ll
deallocate ll
In "AG" table, "SALARY" was 100 for all the entries. When I run the Cursor, it showed the salary value as "100" correctly.After the cursor was closed, I run the query select * from AG.But the result had updated to salary 200 as given in the cursor. file says modifications is not allowed in the static cursor.But I am able to update the data using static cursor.
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