I have found execution plan with significant difference between actual and estimated number of rows (roughly actual/2=estimated) in non-clustered index seek.Statistics are updated.
View 9 RepliesThere is a stored procedure. It uses linked server. As we will be migrating to amazon cloud, our architect instructed not to replace linked server with openquery.
View 8 Replies View RelatedI have a stored procedure that will execute with less than 1,000 reads onetime (with a specified set of parameters), then with a different set ofparameters the procedure executes with close to 500,000 reads (according toProfiler).In comparing the execution plans, they are the same, except for the actualand estimated number of rows. When the proc runs with parameters that producereads that are less than 1,000 the actual and estimated number of rows equal1. When the proc runs with parameters that produce reads are near 500,000 theactual rows are approximately 85,000 and the estimated rows equal 1.Then I run:DBCC DROPCLEANBUFFERSDBCC FREEPROCCACHEIf I then reverse the order of execution by executing the procedure thatinitially executes with close to 500,000 reads first, the reads drop to lessthan 2,000. The execution plan shows the acutual number of rows equal to 1,and the estimated rows equal to 2.27. Then when I run the procedure thatinitially executed with less than 1,000 reads, it continues to run at lessthan 1,000 reads, and the actual number of rows is equal to 1 and theestimated rows equal to 2.27. When run in this order, there is consistency inthe actual and estimated number of rows and the reads for both executionswith differing parameters are within reason.Do I need to run DBCC DROPCLEANBUFFERS and DBCC FREEPROCCACHE on productionand then ensure that the procedure that ran close to 500,000 reads is runfirst to ensure the proper plan, as well as using a KEEP PLAN option? Or,what other options might you recommend?I am running SQL 2000 SP4.--Message posted via SQLMonster.comhttp://www.sqlmonster.com/Uwe/Forum...eneral/200609/1
View 4 Replies View RelatedHi,
I used to use a insert subselect on the 6.5 catalog table
I have a table like this.
CREATE TABLE Table1
([S_ID] varchar(7), [S_ACTV_CODE] varchar(4), [S_USER] varchar(5), [S_DATETIME] varchar(19), [S_ACT_IND] int)
;
INSERT INTO Table1
([S_ID], [S_ACTV_CODE], [S_USER], [S_DATETIME], [S_ACT_IND])
VALUES
('AAA-111', NULL, 'USER1', '2015-06-15 00:21:06', 0),
('AAA-111', '2', 'USER1', '2015-06-15 00:21:07', 0),
[code]....
Basically I want to calculate the time spent by S_Users on a particular S_ACTV_CODE:
- S_ACTV_CODE_PREV means the previous active records.
- S_START_TIME is the time of S_DATETIME when a S_ACTV_CODE starts
- S_END_TIME is the time before a S_ACTV_CODE changes to another S_ACTV_CODE
- For the first record, S_ACTV_CODE is null, so there is no S_ACTV_CODE_PREV, so S_ACTV_CODE_PREV is NULL
- For the second record S_ACTV_CODE has some value, but S_ACTV_CODE_PREV is NULL for first record. So second record S_ACTV_CODE_PREV is also NULL
- For the last record (means S_ACTV_IND = 1), the user is currently working on it and S_ACTV_CODE is not changed. So S_END_TIME is a open time and we want to keep it as NULL
So the result should be as below:
S_ID S_ACTV_CODE_PREV S_ACTV_CODE_CURR S_USER S_START_TIME
S_END_TIME TIME_SPENT (in Sec)
AAA-111 NULL NULL USER1 2015-06-15 00:21:06
2015-06-15 00:21:07 1
AAA-111 NULL 2 USER1 2015-06-15 00:21:07
2015-06-17 03:20:33 183566
AAA-111 2 4 USER2 2015-06-17 03:20:33
[code]....
I'm using SQL Server 2012 and I need to run a query against my database that will output the difference between 2 dates (namely, DateOfArrival and DateOfDeparture) into the correct month column in the output.
Both DateOfArrival and DateOfDeparture are in the same table (let's say GuestStay). I will also need some other fields from this table and do some joins on some other tables but I will simplify things so as to solve my main problem here. Let's say the fields needed from the GuestStay table looks like below:
I need my query to output in the following format:
How to write this query?
I have a table which dont any Identity column. The data in the table has duplicate values, some rows are totally identical. I just want to select the row which has maximum Row Id/Row number if I am getting multiple rows in my select statement.
View 2 Replies View RelatedI know I have had this before, but I can't remember what I did to fix it.I have a field that is varchar. I need to count the numbers up.
Example
Claim Count
37
6
When I do my query
Select Distinct count([Claim]) from Table
It comes up with 2.How do I have it recognize that I need the actual number count? I need it to be 43.
The benefit of the actual execution plan is that you can see the actual number of rows passing through each step - compared to the estimated number of rows.But what about the "cost percentages" ?I believe I've read somewhere that these percentages is still just an estimate and is not based on the real execution.Does anyone know this and preferable have a link to something that documents it?Thanks
View 1 Replies View RelatedI have a table with PO#,Days_to_travel, and Days_warehouse fields. I take the distinct Days_in_warehouse values in the table and insert them into a temp table. I want a script that will insert all of the values in the Days_in_warehouse field from the temp table into the Days_in_warehouse_batch row in table 1 by PO# duplicating the PO records until all of the POs have a record per distinct value.
Example:
Temp table: (Contains only one field with all distinct values in table 1)
Days_in_warehouse
20
30
40
Table 1 :
PO# Days_to_travel Days_in_warehouse Days_in_warehouse_batch
1 10 20
2 5 30
3 7 40
Updated Table 1:
PO# Days_to_travel Days_in_warehouse Days_in_warehouse_batch
1 10 20 20
1 10 20 30
1 10 20 40
2 5 30 20
2 5 30 30
2 5 30 40
3 7 40 20
3 7 40 30
3 7 40 40
How can I update Table 1 to see desired results?
hi all,
maybe this is not a serious problem, but I tried for days to come toi a solution without success.
My Problem:
I have have several flatfile sources I need to import into a sql-server 2005 DB.
It is very important for me to have the original line number from inside the source file for each record. The rowcount transform doesn't fit in for this task, because it accumulates all rows until the end of the dataflow.
I tried script components and it works fine if i assume there are no errors in my source. then I simply could declare a local variable and count it up and add a custom collumn to my output. But for errors in my source this won't work, because a second script component won't know the actual value of a package level variable, which i use to store the value, because i am only allowed to access this variable in the post execujte method of the script.
How can I achieve my goal? Please help me...
Thanks in advance .. Bernd
Someone claimed that the query:
INSERT INTO [table1] SELECT * FROM [table1]
was a result of running DBCC DBREINDEX.I wasn't able to replicate this when I did a trace on my local machine, but SQL Monitor from Red-Gate shows that query happening for at least some of the tables that are being reindexed via a job. Is there anyway to examine the actual code inside DBREINDEX to see exactly what commands it may execute?
I have a view in SQLServer 2005. It took 30 sec. to finish. Then I deleted 4500 records from one table that is used in view. It took 90 sec. to finish now. I did a comparison on Actual Execution Plan between before I deleted data and after I deleted data, they are almost same, only different is Actual Number Rows become less after deleted data. So, I wonder why data become less but time become more. When I look closely on the Actual Execution Plan, the ridiculous thing is, there are only Estimated Operation Cost on each step, no Actual Operation Cost. I guess there are something wrong with optimizer because reuse same Execution Plan, but how can I tell which step wrong without Actual Operation Cost.
Thanks!
Henry
I have problems sometimes with a package.
There is and SQL Agent job that starts a package (from a file system using cmd command). Usually job takes 8-10 minutes. But sometimes it get stuck for a long time (1+ hour).
DTexec process can be found with procmon, but it seems it just not doing anything (And package is not logging to file Start of the execution) After long wait it just runs a package quickly.
I've moved a package to SSIS catalog to try to get more detailed logging, but with no luck.
Job starts at 1 PM, package execution starts at 1:49 PM. Without any messages about the execution in SSISDB log.
First I've thought it might be long validation problem, but when package executes validation messages are there and they perform quick.
Hi
I want to enter rows into a table having more number of columns
For example : I have one employee table having columns (name ,address,salary etc )
then, how can i enter 100 employees data at a time ?
Suppose i am having my data in .txt file (or ) in .xls
( SQL Server 2005)
My table is something like this
Col1 Balances
1000 1000
900 100
20 80
50 30
I want the balance to be calculated as (PreviousRecord
Balance-CurrentCol1)
Eg:1000-900=100
100-20=80
80-50=30
Please Help
I encountered a tricky problem. The original data, say, table_o, is shown below:
IdsStatusDate
ID1402-May-13
ID1310-May-13
ID1216-May-13
ID1120-May-13
ID2308-May-13
ID2210-May-13
ID2119-May-13
The final resulting table, e.g., table_f, is:
Ids4->3 3->2 2->1
ID18 6 4
ID2NULL 2 9
The values in the final table are the days used by each ID transferring from status i to status i-1. E.g., ID uses 8 days (10-May-13 - 2-May-13) to go to status 3 from status 4.
It is hard for me to come up with a table like the final table, although I know that the difference between two adjacent rows can be computed by using self-join and timediff().
This is tricky so please read it through
For displaying data on the report I am using the following query
SELECT ReferenceNumber, ActivityID, ActivityTimeStamp, ActivityType, ActivityPerformedBy FROM ActivityDetails
ORDER BY ReferenceNumber, ActivityID
The result set is
Issue Reference #
Activity ID
Activity Date/Time
Activity Type
100819
4521404
11/4/07 2:06 PM
INIT
100819
4521405
11/4/07 2:07 PM
LOG
100819
4521406
11/4/07 2:07 PM
LOG
100819
4521473
11/4/07 2:28 PM
TR
100819
4521501
11/4/07 2:33 PM
WIP
100819
4521839
11/4/07 3:25 PM
RE
100819
4521844
11/4/07 3:27 PM
RE_Method
100819
4522575
11/4/07 8:53 PM
CL
100820
4521412
11/4/07 2:10 PM
INIT
100820
4521419
11/4/07 2:13 PM
ATTACHTDOC
100820
4525856
11/5/07 2:49 PM
ATTACHTDOC
100820
4525859
11/5/07 2:49 PM
LOG
100820
4525869
11/5/07 2:49 PM
CL
100821
4521423
11/4/07 2:14 PM
INIT
100821
4521425
11/4/07 2:14 PM
LOG
100821
4521429
11/4/07 2:14 PM
TR
100821
4521432
11/4/07 2:14 PM
ACK
100821
4522219
11/4/07 4:58 PM
RE
100821
4522221
11/4/07 4:58 PM
RE_Method
100821
4522447
11/4/07 6:51 PM
CL
On the report I have used the grouped by clause on 'Issue Reference #'. I want one more column which would calculate the difference between two consecutive Activity Date/Time of the same reference #.
e.g. Time difference between 4521404 and 4521405, 4521405 and 4521406, 4521406 and 4521473 etc. Please note that the difference between 4521412 and 4522575 will NOT be calculated since they are from different Reference Numbers.
Thanks,
Hi all,
I have a table named Orders and this table has two relevant fields: CustomerId and OrderDate. I am trying to construct a query that will give me the difference, in days, between each customer's order so that the results would be something like: (using Northwind as the example)
...
ALFKI 25/08/1997 03/10/1997 39
ALFKI 03/10/1997 13/10/1997 10
ALFKI 13/10/1997 15/01/1998 94
ALFKI 15/01/1998 16/03/1998 60
ALFKI 16/03/1998 09/04/1998 24
...
At the moment, I have the following query that I think is on the right track:
€¦
SELECT dbo.Orders.CustomerID, dbo.Orders.OrderDate AS LowDate, Orders_1.OrderDate AS HighDate, DATEDIFF([day], dbo.Orders.OrderDate, Orders_1.OrderDate) AS Difference FROM dbo.Orders INNER JOIN dbo.Orders Orders_1 ON dbo.Orders.CustomerID = Orders_1.CustomerID AND dbo.Orders.OrderDate < Orders_1.OrderDate GROUP BY dbo.Orders.CustomerID, dbo.Orders.OrderDate, Orders_1.OrderDate, DATEDIFF([day], dbo.Orders.OrderDate, Orders_1.OrderDate) ORDER BY dbo.Orders.CustomerID, dbo.Orders.OrderDate, Orders_1.OrderDate
€¦
However, this gives me too much data:
€¦
ALFKI 25/08/1997 03/10/1997 39
ALFKI 25/08/1997 13/10/1997 49
ALFKI 25/08/1997 15/01/1998 143
ALFKI 25/08/1997 16/03/1998 203
ALFKI 25/08/1997 09/04/1998 227
ALFKI 03/10/1997 13/10/1997 10
ALFKI 03/10/1997 15/01/1998 104
ALFKI 03/10/1997 16/03/1998 164
ALFKI 03/10/1997 09/04/1998 188
ALFKI 13/10/1997 15/01/1998 94
ALFKI 13/10/1997 16/03/1998 154
ALFKI 13/10/1997 09/04/1998 178
ALFKI 15/01/1998 16/03/1998 60
ALFKI 15/01/1998 09/04/1998 84
€¦
So, do any of you have any ideas how I might achieve this? I know how to do it using a stored procedure, but I am trying to avoid that; I€™d like to do this in a single query.
Thanks for any help you have to offer,
Regards,
Stephen.
Hi,
i have a matrix, and in that matrix i need to have one column which calculates the percentage change between a value on the current row and the same value on the previous row.
Is this possible? The RunningValue() function isn't of help as it can't help me calculate the change between two rows, and Previous() doesn't work in a matrix (why???!!!!!). Also calculating this as part of the query isn't possible as there is a single row group on the matrix, and the query is MDX.*
Thanks,
sluggy
*for those who are curious, the matrix is showing data an a per week basis, the row group is snapshot date, i am trying to measure the change in sales at each snapshot.
I have here a query which delivers me the user data from the last month. The problem what I have is, if employee have more then one rows in this month, they will be also deliverd. But exactly this is not needed. I need only the last record from last month.
SELECT a.FIRMA,
a.PSNR,
a.FELDNR,
a.PFLFDNR,
a.INHALT AS FTE,
a.PFGLTAB,
[Code] ....
Result from Query at the moment:
FIRMAPSNRFELDNRPFLFDNRFTEPFGLTABPFGLTBISKSTNRPSPERSNR
1351022112013082820320101000084000895
14702220,912014100120320101000079000057
1166022112011010120320101000077000543
1364022112013100120150114000072000920
136402220,942015011520321231000072000920
As you can see, PSNR=364 has two rows and i need only the row from last month and last date.Maybe we can use Field PFLFDNR as counter. get only one row for every employee?
like this
FIRMAPSNRFELDNRPFLFDNRFTEPFGLTABPFGLTBISKSTNRPSPERSNR
1351022112013082820320101000084000895
14702220,912014100120320101000079000057
1166022112011010120320101000077000543
136402220,942015011520321231000072000920
Hi,
I am working on a matrix report shown as below: the first one is what i got now, the second one is what I desire to have
Quarter1
January
February
March
Total
CCC
2006
9
9
19
37
2007
2
17
15
34
CHTDS
2006
5
15
10
30
2007
6
8
9
23
FTA
2006
4
9
3
16
2007
4
4
6
14
GDA
2006
9
8
12
29
2007
15
7
16
38
Quarter1
January
February
March
Total
CCC
2006
9
9
19
37
2007
2
17
15
34
Diff
-7
8
-4
-3
CHTDS
2006
5
15
10
30
2007
6
8
9
23
Diff
1
-7
-1
-7
FTA
2006
4
9
3
16
2007
4
4
6
14
Diff
0
-5
3
-2
GDA
2006
9
8
12
29
2007
15
7
16
38
Diff
6
-1
4
9
How can I get the difference between 2006 and 2007 for each category as highlighted in yellow?
Thanks,
xhh
How would I compare 2 rows to find the difference in the columns?
Example:
ID Column1 Column2 Column3
1 Text1 Text4
2 Text1 Text2 Text3
Result:
Column1: Text2 New
Column3: Text4 Old Text3 New
how to measure a change in inventory over various stores. Â My sql2008R2 express db gets a new row of data everyday from each store(about 40 stores) for a single product stock count "OnHand" and if there is any new stock on order. Â When the new stock arrives it is added to the "OnHand" count. Â I want to measure the delta change per day,per store. Â I'm stuck on how to separate the stores and how to query the delta of stock.My data base looks like this
               Â
TimeStamp Store
OnHand OnOrder
2015/04/22 18 Â Â 1 - Concord
12
   0
2015/04/23 11 Â Â 1 - Concord
11
Â
[code]....
I am trying to create an exception report that will show the difference between two versions of the same row. (Combination of two different sources in sql, with source 1 having childID = 0 and the other source having childID = 1; parentID is the link between them)
The results are as follows:
ParentID - ChildID - Col1 - Col2 - Col3
1 - 0 - AA - BB - CC
1 - 1 - AA - BF - CC
2 - 0 - GG - NN - TT
2 - 1 - DE - NN - TA
3 - 0 - etc
3 - 1 - etc
4 - etc
How can I render the differences in red in RS?
I have a table data like below
id     type    timestamp
1001Â Â Â start1Â Â Â 10:34:23:545
1001Â Â Â start2Â Â Â 10:34:24:545
1001Â Â Â end2Â Â Â 10:34:24:845
1001Â Â Â end1Â Â Â 10:34:25:545
1002Â Â Â start1Â Â Â 10:34:25:645
1002Â Â Â start2Â Â Â 10:34:25:745
1002Â Â Â end2Â Â Â 10:34:25:945
1002Â Â Â end1Â Â Â 10:34:25:965
I need the result as follows
id        millisecond diff start1end1               millisecond diff start2end2
1001   end1 timestamp-start1 timestamp   end2 timestamp-start2 timestamp
1002   end1 timestamp-start1 timestamp  end2 timestamp-start2 timestamp
SQL Server 2008 R2
Here is the table:
empid lastname firstname title titleofcourtesy ModifiedOROriginal
1 Davis1 Sara CEO Ms. Modified
1 Davis Sara CEO Ms. Original
We need an output like this:
empid
1
1
lastname
Davis1
Davis
firstname
Sara
Sara
title
CEO
CEO
titleofcourtesy
Ms.
Ms.
ModifiedOROriginal
Modified
Original
Given a table that has three columns that together create a key and two columns that together define NameValue pairs, how can the difference between instances of values be calculated and displayed?One table is used to contain periodic dumps of data from various sources. Because this is an early stage of development for the software project instead of having explicit columns that contain specific data the table contains name/value pairs. This allows the software to export anything to the database table. When this data is imported, earch row shares the same key (three columns containing a machine type, serial number and a timestamp), a name that identifies the data and a string that contains the actual data. While this arrangement makes it trivial to support the addition of any data that the software developers want to export, it makes it less obvious as to how to generate reports.Let's make an example. Lets assume that there are two vending machines, each of which has just 3 snacks and each of which generates two separate reports.
Type Sn Timestamp Name Value
A 1 2015-08-15 12:34 Snick 5
A 1 2015-08-15 12:34 Mars 10
A 1 2015-08-15 12:34 MandM 0B 2 2015-08-15 15:31 Snick 1
B 2 2015-08-15 15:31 Mars 9
B 2 2015-08-15 15:31 MandM 0A 1 2015-08-21 09:12 Snick 11
A 1 2015-08-21 09:12 Mars 18
[code]...
So, the names of the values become the report's columns. The reports are sorted by timestamp, then by type, then by serial number.The value associated with the previous row that shares the same name is subtracted from the value of the next row in which the same name occurs and that becomes the displayed value in the report.
I have the table with the similar set of records which mentioned below, find the time difference between two rows of record. By Using the MsgOut column i have to find time taken b/w PS & PV and some record doesnt have PV .
LogID LocIDClientCert MsgType MsgOutMessageTimeStamp System
1151334934NOT SPECIFIEDQ_T12PS 2015-10-01 00:00:40.980AHR
1151335243NOT SPECIFIEDD_T12PV 2015-10-01 00:00:53.800AHR
1151342944NOT SPECIFIEDQ_T12PS 2015-10-01 00:05:40.957AHR
1151343281NOT SPECIFIEDD_T12PV 2015-10-01 00:05:53.670AHR
1151350046NOT SPECIFIEDQ_T12PS 2015-10-01 00:10:40.970AHR
1152760563759NOT SPECIFIEDQ_T12PS 2015-10-01 15:28:29.617AHR
1152760739690NOT SPECIFIEDQ_T12PS 2015-10-01 15:28:33.633AHR
equipmentid downtimestartdate downtimeenddate  dowtime
a3er 2015-03-15 02:00 2015-03-17 23:00 Â Â Â Â Â Â 69
b6e4 2015-03-18 13:00 2015-03-20 04:00 Â Â Â Â Â Â 39
i have many rows(in our production table, thousands of rows are there) like above in a table and i want like below output(in output total 6rows only)
equipmentid downtimestartdate downtimeenddate dowtime
a3er      2015-03-15 02:00 2015-03-15 24:00       22Â
a3er      2015-03-16 00:00 2015-03-15 24:00       24
a3er      2015-03-17 00:00 2015-03-15 23:00       23
[code]...
I have Two Time fields in a table. Time(0). An "opening time" and a "closing time". They can hold any legit time.
I want to calculate in a SELECT Statement how many minutes within this range are within 9am to 5pm (which I'll convert to hours).
For example, here's an easy example:
OPEN: 9:00:00
CLOSE: 17:00:00
8 Hours/480 minutes
I could get this easy enough with a DATEDIFF function.
But what about:
OPEN: 08:00:00
CLOSE: 18:00:00
10 Hours total but only 8 of those 10 are within 9am-5pm.
Or what about:
OPEN: 10:00:00
CLOSE: 20:00:00
10 Hours total but only 7 are within 9am-5pm range.
I can calculate the total hours/minutes between the two times but not within that special range.
What is the difference between Logical Join and Physical Join and there Types?
View 6 Replies View RelatedI would like to calculate difference between end_date and current date in Months.And also how we can calculate the sum of difference in months between start_date and end_date for each ID?
CREATE TABLE datedifference (
id INT
,start_date INT
,end_date INT
)
INSERT INTO datedifference VALUES (10,20091202,20100629)
INSERT INTO datedifference VALUES (20,20071202,20090330)
INSERT INTO datedifference VALUES (30,20051202,20101031)