How To Check Previous And Next Record Values
I wanted to check the previous and next record values.
sKey NextKey PreviousKey
1 2 Null
2 8 1
8 5 2
5 null 8
I wanted to check the value of NextKey of Prev record and Skey of Next record.
I wanted to check the previous and next record values.
sKey NextKey PreviousKey
1 2 Null
2 8 1
8 5 2
5 null 8
Ex : In the first record of the table, the NextKey is pointing to 2.
So the next record of Skey will be 2. The Next Key for this record is 8. Like wise the next record of this should have the Skey as 8.
Now I need to check whether the NextKey and SKey are correct for all rows.
For that I need to check the previous record of "Next key" and next record of "Skey".
Hello,I know that I've seen this question asked on here before, but I can'tfind an answer that gives me the performance that I need.I have a table that stores events for users:CREATE TABLE Lead_Action_History (lead_action_seq INT IDENTITY NOT NULL,lead_action_date DATETIME NOT NULL,lead_seq INT NULL,operator_id VARCHAR(20) NOT NULL,call_time INT NOT NULL,CONSTRAINT PK_Lead_Action_History PRIMARY KEY (lead_action_seq) )GOThe table has a foreign key to another table through the lead_seqcolumn:CREATE TABLE Lead_Master (lead_seq INT IDENTITY NOT NULL,state CHAR(2) NOT NULL,CONSTRAINT PK_Lead_Master PRIMARY KEY (lead_seq) )GOI need to write a query that will give me a sum of call_time brokendown by a column that is in the table joined through the lead_seq.However, if the lead_seq for a row is NULL then I need to use thelead_seq for the previous row (based on lead_action_date) for the sameoperator.This is what I came up with:SELECT LM.state, SUM(call_time)FROM Lead_Action_History LAHINNER JOIN Lead_Master LM ON (LM.lead_seq = LAH.lead_seq)OR (LAH.lead_seq IS NULLAND LM.lead_seq = (SELECT TOP 1LAH2.lead_seqFROMLead_Action_History LAH2WHERELAH2.operator_id = LAH.operator_idAND LAH2.lead_seqIS NOT NULLORDER BYLAH2.lead_action_date DESC))GROUP BY LM.stateThe problem is that Lead_Action_History has millions of records andany solution that I've found involves one or more subqueries on itwhich kills performance. I am going to look at using a covering indexwith the solution above, but I thought that someone here might haveanother way of doing this.I can't really change the structure, but I can play with the indexing.I would still be curious though how other people model this type oftemporal data in a way that makes it easy to work with.Thanks!-Tom.
Consider this scenario.
I have two database in the sql server and consider that i have a query which has 4 tables inner joined.
When i execute the query in the database1 , the query is returning rows, But when i execute the same query in the database2, the query is not retuning rows . I know that the
no rows are returned because of missing data in the database2. But have no idea how to trace what values are missing in the database2. Please note the tables is having a huge
list of records by which manually comparison is painfull. Please consider i dont have any background idea of the values in the tables but just using it. Any help would be
I hope you can help me. I posted this in the microsoft sql server newsgroupa few days ago and got no response so I thought I'd try here. If I canprovide any clarification I'll be glad to do so.I'm trying to calculate a column based on the value of the previous record.I'm not very experienced with SQL-Server.I'm using the following table:CREATE TABLE tblPayment([PaymentID] [int] IDENTITY (1, 1) NOT NULL ,[LoanID] [int] NULL ,[PaymentPeriod] [int] NULL ,[PaymentRecDate] [datetime] NULL ,[PaymentAMT] [money] NULL)I have a view based on this table. That view has the following calculatedcolumnsBeginningBalance: For the first record, this is equal to the loan amountfrom the loan table. For each additional record this is equal to the endingbalance from the previous payment record.Interest: BeginningBalance * the monthly interest rate from the loantablePrincipal: PaymentAMT - InterestEndingBalance: BeginningBalance - PrincipalIt might seem I could use a subquery to calculate the Beginning Balance asin:SELECT LoanID, PaymentPeriod, PaymentAMT,(SELECT SUM(PaymentAMT) FROM tblPayment AS tbl1WHERE tbl1.LoanID = tblPayment.LoanID AND tbl1.PaymentPeriod <tblPayment.PaymentPeriod) AS BeginBalanceFROM tblPaymentWHERE (LoanID = @LoanID)But this will not work, because the interest is calculated on the previousmonth's balance. I need to find a way to loop through the recordset. Isthis possible?Thank you,--Derek CooperDatabase9www.database9.com
Is there any way to check previous row in SQL Query?
I have a table with these column :
I want to delete record from database in which the Audit_time is <'01/05/2004'.
However before deletion, I want to check, if the Changes value is 'OLD' And the previous value is 'NEW', I will check the Audit_time of the NEW instead of OLD.
Row Name1 Name2 Audit_Time(mm/dd/yyyy) Changes
1 ABCD EFGH '01/01/2004' ADD
2 ABCD EFGHIJ '01/04/2004' NEW
3 ABCD EFGH '01/04/2004' OLD
4 Klarinda Rahmat '02/08/2004' NEW
5 Klarinda Rahmat '01/04/2004' OLD
In this case, I want to delete row 1,2,3 Where the audit_time are < '01/05/2004'.
Row 5 the audit_time also < '01/05/2004', however the changes='OLD' and the previous value changes='NEW', so I will check the Audit_Time of row 4 which is not < '01/05/2004'.
So I can't delete row5.
Is there any way to check previous row or the row before a specific row in SQL.
Any suggestion is welcomed.
Thank you in advanced.
Hi. Is it possible in SQL query to find record previous or next in comparison with record found with clause WHERE (example of query below)? I need to find record with ProblemID less than or greater than 10. Regards Pawelek.
SELECT ProblemIDFROM dbo.tblProblemsWHERE (ProblemID = 10)
Please see DDL and INSERT statements below.Let's say that some process throws out the second row, where theClocktime = '02/01/2005 12:34'Without the use of a cursor, how can I retrieve the PREVIOUS value forthat employee? Pseudo SQL might be something like:SELECT*FROMtblTestWHEREfldCLocktime = THE-ONE-IMMEDIATELY-BEFORE '02/01/2005 12:34'ANDfldEmployeeID = 1TIAEdwardif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblTest]') and OBJECTPROPERTY(id, N'IsUserTable') =1)drop table [dbo].[tblTest]GOCREATE TABLE [dbo].[tblTest] ([fldTestID] [int] IDENTITY (1, 1) NOT NULL ,[fldEmployeeID] [int] NULL ,[fldClocktime] [datetime] NULL ,) ON [PRIMARY]GOINSERT INTO tblTest(fldEmployeeID,fldClocktime)VALUES(1,'01/01/2005 12:34')INSERT INTO tblTest(fldEmployeeID,fldClocktime)VALUES(1,'02/01/2005 12:34')INSERT INTO tblTest(fldEmployeeID,fldClocktime)VALUES(1,'03/01/2005 12:34')
How to Get previous record thru sql query
For the example
1 usera item1 1.00 01/02/072 usera item1 2.00 02/02/073 userc item2 3.00 03/02/07
--how to use the query to make them join became like this (get/join with the next record)
1 usera item1 1.00 01/02/07 item1 2.00 02/02/073 userc item2 3.00 03/02/07 null null null
>.<need help ... thanks alot
I'm trying to add a next and previous button to a popup window I have on a photo gallery -
Having trouble with the sql
I know I would have 2 select statements that would each return 1 result set.
I know how to get the top ( and bottom by ordering descending and doing Select Top 1)
But how would I get the next one up!
I would hate returning the entire image section and perform the calcuation in the business tier :(
I need to select a spesific record using the recordkey and then select the previous and the next record as well. (which leaves me with a recordset containing three records)
Is this possible?
Hi, I am new to using SQL. Currently, I'm using the following statemens to retrive a specific record from my MS Access DB via VB.net.
SELECT * FROM table_name WHERE Field_Name = Criteria
Can someone please tell me, after selecting this record, If I want to go to the FIRST, or NEXT or PREVIOUS of the record just retrived or the LAST record. Can someone please tell me how can write the SQL statment to achieve this ?
I'm creating a report in SSRS where we want to do a week-over-week or month-over-month analysis. We have each month and the metrics in a table. By sorting the table ascending, I can grab the previous record using the Previous function in a cell. However, when I order the table descending the previous record is not the correct record to get. In that case I want to grab the next record rather than the previous record. How can I invert the previous function? Or how can i grab the next record in the table rather than the previous?
just wondering, if I can get help with a table (Table A) , where there are few dates and numbers, I have to relate this table to another table (Table B) , where I have whole year working dates
I want to write an expression while making dataset, that if date in table B matches table A, it just get the number from the next column from table A, if it does not matches - it should go back to the date (in table A) - where there is a number.
Like table B has working dates for march, but there are only two dates in table A , for 3/2 (and number is 300) and 3/20 (number 200). So In dataset I want all dates from table B and from 3/2 to 3/19 300 in number column and 200 on 3/20.
Thanks in advance for your help
I need your help for my SQL query. I have a table like this
ClmA ClmB ClmType
1 | 10 | 0
2 | 20 | 0
3 | 30 | 1
4 | 40 | 0
5 | 50 | 1
And its the result that i want to get.
ClmA ClmB ClmType ClmResult
1 | 10 | 0 | 10
2 | 20 | 0 | 30
3 | 30 | 1 | 30
4 | 40 | 0 | 70
5 | 50 | 1 | 80
Let me explain. When retrieving a row, an extra column should be added.It's value should be the sum of previous rows whose type is the same with the encountered one. I made it with a function but it's performance was terible with large tables. I have tables larger then fifty housands rows.
Hello...i have a table that record all the reading meter....so when i change one of the reader meter data...in logical it will automatically change the normalized fields...
when i insert new record..i just insert data about date and meter...an normalized is automated calculate using my function..the problem is..when i have data more than one...when i try insert or update or delete data...it nee to be automatically calculate back the normalized..i know this is needed the temperory table and then reinsert back..how can i solve this problem???
Was wondering if there is easy anyway to autopopulate a field by pulling a value from a field in the previous record?
For example, I have a table with fields name "Dist_From" and "Dist_To". When I add a new record I would like it to populate the "Dist_From" field with the "Dist_to" value from the previous record.
Hi,In oracle I have a LAG function using which I could get the previousvalue of a field.Do we have anything similar to that in SQL Server or access?ThanksDevi
How to write Stored Procedure to convert All seconds to Minutes AND finding average.
SYMBOL TIME PRICE
EUR A0-FX 2008-05-09 11:37:31.203 1.54035
EUR A0-FX 2008-05-09 11:37:30.030 1.54034
EUR A0-FX 2008-05-09 11:37:28.860 1.54033
EUR A0-FX 2008-05-09 11:37:41.673 1.54032
EUR A0-FX 2008-05-09 11:37:59.720 1.54031
EUR A0-FX 2008-05-09 11:38:09.000 1.54033
EUR A0-FX 2008-05-09 11:38:35.877 1.54032
EUR A0-FX 2008-05-09 11:38:59.767 1.54041
SYMBOL TIME PRICE
EUR A0-FX 11:37 1.54031
EUR A0-FX 11:38 1.54041
I know this how to write ..
ROW_NUMBER() OVER(PARTITION BY CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) ORDER BY CAST(Time AS DATETIME) ASC) AS rn_1,
ROW_NUMBER() OVER(PARTITION BY CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) ORDER BY CAST(Time AS DATETIME) DESC) AS rn_2
Table1 WHERE SYMBOL='EUR A0-FX'
SELECT SYMBOL='EUR A0-FX',CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) AS [Time],MAX(CASE WHEN rn_2 = 1 THEN Price ELSE NULL END) AS [Close] FROM cte
CONVERT(CHAR(5), CAST(Time AS DATETIME), 114)
CAST(CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) AS DATETIME);
But I want to add some additional code in my procedure like AVERAGE of Previous 5 Price Values.
SYMBOL TIME PRICE
EUR A0-FX 11:37 1.54031 Ć1
EUR A0-FX 11:38 1.54041 Ć2
EUR A0-FX 11:39 1.54021 Ć3
EUR A0-FX 11:40 1.54081 Ć4
EUR A0-FX 11:41 1.54071 Ć5 Previous 5 Average PRICE Values.
EUR A0-FX 11:42 1.54091 Ć6
EUR A0-FX 11:43 1.54021 Ć7
EUR A0-FX 11:44 1.54081 Ć8
SYMBOL TIME PRICE AVERAGE
EUR A0-FX 11:42 1.54091 Ć6 (1.54061)
EUR A0-FX 11:43 1.54021 Ć7 (1.54091)
EUR A0-FX 11:44 1.54081 Ć8 (1.54071)
At 11.42 time average is 1-5 price values
At 11.43 time average is 2-6 price values
At 11.44 time average is 3-7 price values
I'm guessing this is a fairly straight forward need, but want to make sure I am using the correct set of tasks:
In the dataflow, some values I need to carry forward from the previous row, such as a balance that I need to carry forward for the current customer record. This is similar to a running total, only I am not summing anything, but just carrying over from the previous records value (assuming dataset is sorted correctly, first by customer #, then by date).
Do I need the Dervied Column transform, and use a variable to store the previous value, or is there another transform that would be better suited?
Data from as400 imports into SQL with blank fields which is the way as400 outputs records. How can you insert previous record of data null or blank field. ex:
it is my first post on this forum, please be patient if i miss any important bit of information.
i am transporting data from a legacy system into mssql 2k5 using SSIS.
among those column of a dataset there are 13 columns, all necessary for operational reasons, that i need to ensure data consistance.
i believe i could do this check using the lookup data flow item, but surely there must be a way to do it in a more streamlined fashion.
since column names contain numbers to distinguish the version, eg; col01, col02, col03 .. col13.
i thought i could include the lookup within a loop and use a couple of variables to do this trick, but since i have not done it before i am asking for some sort of guidance from a guru among you folks.
please let me know if further clarification is necessary.
I need to write a t-sql query that will take the value of the previousrecord into consideration before calculating the current row's newcolumn value...Here's the situation...I have a query which return the following table structure...Full_Name Points----------------- ------------Name1 855Name2 805Name3 800Name4 775Name5 775Name6 741etc.... etc...I need to create a calculated column that tells me where the personranks in point position. The problem i run into is that in thesituation where two or more people have the same point value i need thecalculated rank column to display the same rank number (i.e. 4th orjust "4") I'm not sure how to to take into consideration the previousrow's point value to determine if it is the same as the current onebeing evaluated. If i new they were the same i could assign the samerank value (i.e. 4th or just "4").If any one has any insight that would be great.ThanksJeremy
As the Microsoft Time Series algorithm implementation is based upon the Autoregressive Tree approach described in:
C. Meek, D. M. Chickering, D. Heckerman. Autoregressive Tree Models for Time-Series Analysis. In Proc. 2nd Intl. SIAM Conf. on Data Mining, 2002 (SDM-02). SIAM, pp. 229 244. http://www.siam.org/meetings/sdm02/proceedings/sdm02-14.pdf.
The model estimated is refererred to as an instance of "... autoregressive tree models of length p, denoted ART(p). An ART(p) model is an ART model in which each leaf node of the decision tree contains an AR(p) model, and the split variables for the decision tree are chosen from among the previous p variables in the time series..." (see the last paragraph of p. 2 of the paper).
What is the value of "p" used in the Microsoft Time Series implementation -- specifically, how many previous time series variables are used in estimating the model? It doesn't appear that this value can be specified in the algorithm parameters -- is that correct?
This code displays dates, File name, and File size for four seperate dates 11/20/2007 , 11/30/2007, 12/30/2007 and 01/31/2007 . I'm trying to show the percentage growth from date to date (ie 11/20/2007 -11/30/2007 percentage growth)
is there a way i can get the previous date file size for each entry, so i can have a variable for the calculation. Or i can get the calculate it within this code (ie database_size_mb / ((database_size_md ) where database_size_datetime -1) *100
or whatever the formula is for percentage growth.
FROM RC_STAT.dbo.Tbl_Database_Statistics AS Tbl_Database_Statistics_1
GROUP BY Database_Size_Datetime, Database_file_name, Database_Size_Mb
this is what it displays now:
2007-11-20 00:00:00.000 ACTReplication_Data 442.5000
2007-11-30 00:00:00.000 ACTReplication_Data 442.5000
2007-12-31 00:00:00.000 ACTReplication_Data 442.5000
2008-01-31 00:00:00.000 ACTReplication_Data 442.5000
2007-11-20 00:00:00.000 ACTReplication_Log 14.8125
2007-11-30 00:00:00.000 ACTReplication_Log 109.7500
2007-12-31 00:00:00.000 ACTReplication_Log 112.9375
2008-01-31 00:00:00.000 ACTReplication_Log 115.5625
2007-11-20 00:00:00.000 BAMArchive 0.6875
2007-11-30 00:00:00.000 BAMArchive 0.6875
2007-12-31 00:00:00.000 BAMArchive 0.6875
2008-01-31 00:00:00.000 BAMArchive 0.6875
2007-11-20 00:00:00.000 BAMArchive_log 0.4922
2007-11-30 00:00:00.000 BAMArchive_log 0.4922
2007-12-31 00:00:00.000 BAMArchive_log 0.4922
2008-01-31 00:00:00.000 BAMArchive_log 0.4922
I was wondering if someone can help.
In vb.net what is the best way to check if a record exists if you are using an sql data reader?
For my application I need to display a button control (make it visible on the page) if a record is available after executing my sql select statement.
Hello,I created the following SQL script to check if a record exists:IF (EXISTS (SELECT LevelName FROM dbo.by27_Levels WHERE LOWER(@LevelName) = LOWER(LevelName))) Return (1)ELSE Return (0)And I also found in a web page another solution:IF EXISTS(SELECT 1 FROM TABLENAME WHERE LevelName=@LevelName) SELECT 1ELSE SELECT 0- Which approach should I use?- Why "SELECT 1 FROM"?- And when should I use SELECT or RETURN?All I need is to know if the record exists ... nothing else.I will use this procedure on an ASP.NET 2.0 / C# web site.I am not sure if this important but anyway ...Thank You,Miguel
Any one can help me with the following requirement:-
. Checking the record if its lock before issues any statement
Any sample will be helpful
Has anyone be able to figure out how you can tell whether or not there is data to be uploaded to the server from a subscription? I know that you can query MSMerge_genhistory and look for a genstatus of 0 if a synchronization has not been attempted. However, if the synchronization has error (i.e. a metadata error), the genstatus column has already been changed even though the data was not uploaded. If we need to re-initialize a subscription (without upload), I would like to ensure that there is not any data that needs to be retrieved from that subscription.
May I know how to use a "date" to select out previous 14 days record from the table? and find the duplicated records?
-- sort out duplicate order from tblOrder
Select * FROM tblOrder
WHERE DDay > @prmDDay("day", -14, getDate())
Group by DDay
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