I need a query to find max serial number by comparing two different tables.
Here is my requirement
I am having two tables named Table1 and Table2. Each tables having more than 30,000,000 records.
I want a simple query to find Max srno from two tables.
For example
If Table1 max is 245 where partno=2 and ano=2
and Table2 max is 343 where partno=2 and ano=2
Then 343 is max serial no
If Table1 max is 435 where partno=2 and ano=2
and Table2 max is 34 where partno=2 and ano=2
Then 435 is max serial no
I used this query but its taking more time
select max(v.MaxSrNo) from
((select max(MaxSrNo) as MaxSrNo from Table1 where partno=@partno and ano=@ano)
union all (select max(MaxSrNo) from Table2 where partno=@partno and ano=@ano)) as v
I have this table of Marks as shown below. All I need is to find the average Marks at various intervals of S.no. That is I need averages at every 3rd S.No. as shown.
S.No. Marks 1 ------ 5 2 ------ 5 3 ------ 6 1st Average Value here (16/3) 4 ------ 5 5 ------ 6 6 ------ 7 2nd Average Value here (18/3) 7 ------ 7 8 ------ 7 9 ------ 8 3rd Average Value here (22/3) 10 ----- 8 11 ----- 9 12 ----- 8 4th Average Value here (26/3)
So basically I need a new table which will have 4 average values for the table above. Of-course the table can be much bigger and the average values can be at any nth value of S.No.
Please give me the correct function name, otherwise please ignore in sending reply. I had used all the functions like identity, ident and so on. I need while selecting a querry, i need to generate serial numbers. I dont have identity column in my table. But, i need to generate serial numbers..
In Sybase SQL Any where, we have a function called Number (*) which will in turn generate serial numbers like ex..
Select Number (*) from x
The output will be
Number(*) 1 2 3 4 5 6 and so on..
I need a equivalent function in SQL Server 7.0 in which if i do select on that particular function with a table i should return above values..
My db contains two table Employee_detail and Student_Detail.Employee_detail has Emp_id and Student_Detail has stud_id.Now my problem is that i want to get one maximum no from these two table.
select SERIALNO, Max(TIME) from dbo.TASK A join dbo.Status B on A.TID=B.TID where A.ID in ('1111',2222') and A.TYPE='Pen' group by B.SERIAL_NO, B.TIME order by BM.TIME
For this query I may get serial no duplicates but times are unique
For that serial no, I have to find the recent time. But if I use group by, I am getting the wrong no
I need a new field added 'Field1' which will add SEQUENCE number 1,2,.. based ON GROUP BY MasterID..AND another field TotalCount which will COUNT total masterID (here it will be 2)
I have Logs table and want to assign a serial number to the techs using the following query
Select Date, Case_ID, Site, Dept, Tech, Start_Time, ROW_NUMBER () OVER (PARTITION BY Date, Site, Dept, Tech ORDER BY Start_Time) as Row_Num FROM Logs Where Date = Getdate()
I get the following results.
Date Case ID Site DeptTechStart TimeRow_Num 7/28/14 10023 TartvilleMaintcAmy P.7:301 7/28/14 56789 TartvilleMaintcRem W.8:051 7/28/14 23098 TartvilleMaintcAmy P.8:352 7/28/14 70004 TartvilleMaintcAmy P.9:103 7/28/14 12708 TartvilleMaintcMag O.10:001 7/28/14 10004 TartvilleMaintcAmy P.12:304 7/28/14 40056 TartvilleServiceJoe F.7:301 7/28/14 23458 TartvilleServiceJoe F.7:552 7/28/14 69200 TartvilleServiceRus T. 7:301
Please notice the cases in Maintc department. See how Amy P.'s shift is broken by Rem W. and Mag O. But the Row Number does not recognize this, it still says Amy P's case as 2 and 4 the even though Rem's and Mag's cases were in between.
This is what I really wanted.
Date Case ID Site DeptTechStart TimeRow_Num 7/28/14 10023 TartvilleMaintcAmy P.7:301 7/28/14 56789 TartvilleMaintcRem W.8:051 7/28/14 23098 TartvilleMaintcAmy P.8:351 7/28/14 70004 TartvilleMaintcAmy P.9:102 7/28/14 12708 TartvilleMaintcMag O.10:001 7/28/14 10004 TartvilleMaintcAmy P.12:301 7/28/14 40056 TartvilleServiceJoe F.7:301 7/28/14 23458 TartvilleServiceJoe F.7:552 7/28/14 69200 TartvilleServiceRus T. 7:301
I tried many combination of columns for Partition by () and Order by () and the best I can get is the result at the top. How should I achieve it.
A vehicle loading confirm after that what time its gated out so i want to take the time duration between finish loading and gate out, find sample table records , i want to take more than 5 hrs difference between finish loading and gate out.
I work for an organization that repairs serialized devices. Each time a device is repaired it's serial number is recorded in a database table along with the date it was repaired along with other information about the device. There are multiple cases where a unit has been repaired more than once.
I am trying to write a query that will return the serial only once and that record will be the record of the latest repair date. To sum it up,
Return a list of serials where if a serial exists more than once in the table, return only the instance of the serial record(s) with the max(created_dt). The end result will be a list of distinct serial numbers.
Here is my Query. The problem I believe is in my sub-query but I am not sure how to structure it.
I tried all the INFORMATION_SCHEMA on SQL 2000 andI see that the system tables hold pretty much everything I aminterested in: Objects names (columns, functions, stored procedures, ...)stored procedure statements in syscomments table.My questions are:If you script your whole database everything you end up havingin the text sql scripts, are those also located in the system tables?That means i could simply read those system tables to get any informationI would normally look in the sql script files?Can i quickly generate a SQL statement of all the indexes on my database?I read many places that Microsoftsays not to modify anything in those tables and not query them since theirstructure might change in future SQL versions.Is it safe to use and rely the system tables?I basically want to do at least fetching of information i want from thesystem tables rather than the SQL script files.I also want to know if it's pretty safe for me to make changes in thesetables.Can i rename an object name for example an Index name, a Stored Procedurename?Can i add a new column in the syscolumns table for a user table?Thank you
Hello people,I might sound a little bit crazy, but is there any possibility that youcan incorporate 4^15 (1,073,741,824) tables into a SQL Database?I mean, is it possible at all? There might be a question of whereanyone would want so many tables, but i'm a bioinformatics guy and I'mtrying to deal with genomic sequences and was coming up with a newalgorithm, where the only limit is the number of tables I can put intoa Database.So, can you please advise if its possible to put in so many tables intoa SQL database? Or is the Bekerley DB better?
I have a part number field which contains whole numbers. (1 - 5000+) however there are gaps in the numbers e.g. Part Number 3876 maybe missing. The table has new parts inserted from a VB Client. Im trying to write a stored procedure where when a user trys to run an update without entering a part number the first missing part number is found. If they do provide a part number then their number is committed as long as it is unique. I've tried using cursors but am not sure on the best approach. Any suggestions?
Can someone suggest a FAST way to select Currency values where the number has more than X decimal places? There are zillions of rows so looping in code is not the preferred solution.
I try to find the number of rows in a table with this commands: CountRec = New SqlParameterCountRec.ParameterName = "@countrec"CountRec.SqlDbType = SqlDbType.IntCountRec.Value = 0MyCommand = New Data.SqlClient.SqlCommand()MyCommand.CommandText = "select count(*) as @countrec from Customer;"MyCommand.CommandType = Data.CommandType.TextMyCommand.Connection = MyConnectionMyCommand.Parameters.Add(CountRec)MyCommand.Connection.Open()MyReader = MyCommand.ExecuteReaderiRecordCount = CountRec.Value This is the result: Incorrect syntax near '@countrec'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near '@countrec'.Source Error:
Line 39: Line 40: MyCommand.Connection.Open() Line 41: MyReader = MyCommand.ExecuteReader Line 42: iRecordCount = CountRec.Value Line 43: Source File: E:DevelopWebASPwebAccessTimberSalesUserEntry.aspx.vb Line: 41 What to do? I need a complete example to see how it works. Thanks...
I am using SQL 6.5 and I would like to know (using Isql/w) the number of users connected to my server at any given time. Thanks for your help in advance.
hi How to find current row number in MS SQL 2000 server DB ? like in oracle rowid is there to get unique no. of each row. I want to track the last row in the resultset .. is any fun for this ??
CREATE TABLE [dbo].[Student]( [StudentNumber] [varchar](50) NOT NULL, [Name] [char](50) NOT NULL, [Contact] [int] NOT NULL, [Address] [char](50) NOT NULL, [DateOfBirth] [datetime] NOT NULL, [YearEnrolled] [int] NOT NULL, [Year] [int] NOT NULL;
And insert the following data:
INSERT INTO Student VALUES('IT123456X', 'Ahmad Adam','05-18-1997', '33 Mangis Rod', 19970518, 2013, 1); INSERT INTO Student VALUES('IT334455U', 'Mary Tan', '01-23-1996', '51 Koon Seng Road', 23-01-1996, 2012, 1); INSERT INTO Student VALUES('BS123456X', 'Samuel Lee', '03-30-1997', '2 Joo Chiat Lane', 30-03-1997, 2013, 1); INSERT INTO Student VALUES('BS234234Z', 'Nathaniel Koh', '12-08-1997', '5 Stll Road', 08-12-1997, 2013, 1); INSERT INTO Student VALUES('BS987987F', 'Siti Faridah', '07-04-1995', '3 Duku Road', 04-07-1995, 2011, 3)
How do i calculate the age and how can i group by the StudentNumber like 'IT%'
Hello,I need to write a query to find out a set of missing number in a givensequence.Eg : a Column in some table has the following dataCol11234568910Here I need to write a query to find out that number 7 is missing in thegiven sequence.One possible solution is by using any loop. But I am looking out if the samecan be achieved using any query.Thanks in advance.Regards,Mahesh
I need to find out the count of number of records older than 100 days from a table having 'order_date' as yyyymmdd format eg. 20041115. Thanks in advance.
For the above string, which string function can be used to find the number of occurences of a particular character, for example, ','? For this example, the answer should be 4. Is there any built-in function in SQL to do this?
I'm trying to find the SQL Server License Number used to install the software on the server. Does the installation program stores the information on the Registry or not? Looking through registry I found the ProductCode but I'm not sure if that is the valid License Number ... It does looks more like the unistall code ...
This procedure has been returning duplicate numbers. (Tested with scripts that called this proc and put value in a table.)
How can it return duplicates? Does the transaction Begin/Commit not guarantee transactional consistency?
CREATE PROCEDURE sp_UpdateOrderNumber @customer int AS DECLARE @NewOrderId int, @nSQLError int, @nRowCount int BEGIN TRAN UPDATE CUSTOMERS SET ORDER_NUMBER=ORDER_NUMBER + 1 WHERE COMPANY_ID=@customer SELECT@nSQLError = @@error, @nRowCount = @@rowcount If @nSQLError != 0 OR @nRowCount != 1 /* Check for Errors */ Begin Rollback Tran Return -999 End SELECTORDER_NUMBER FROMCUSTOMERS WHERECOMPANY_ID=@customer SELECT@nSQLError = @@error, @nRowCount = @@rowcount If @nSQLError != 0 OR @nRowCount != 1 /* Check for Errors */ Begin Rollback Tran Return -998 End COMMIT TRAN
