Hopefully you can assist this pleb (me) with some (hopefully) basic scripting.
I have a table which has bucket loads of rows in it (funnily enough) Field1 & Field2 Field1 is repeated numerous times (but also has differing values) through the table Field2 is a numeric value which is assigned to the Field1
What I need to do is pull back all the unique Field1's but only those with the highest value in Field2
I'd like to know the current value of my uniqueID column before Icreate a new record.Is there a way to find out this value?It is numeric in my case, but I can't just look for the MAX value,since some records may have been deleted, and the value for theuniqueID still stays at the higher value.Is there a way to read this internally kept value?
I have basic knowledge of T-SQL and I am using Cursors to get the first value, the last value and the peak value and some other values from other tables. I found some examples on google but the code I am using is mixed up. I am using multiple Cursors. I need to join three tables to get the result set into the Cursor. The first example uses 2 tables.
The above code seems totally inefficient but it gives the correct result. Now I want to pull some more value and join a third table (TABLE z) in the above CURSORS and not sure how to make it working using CURSORS.I would like to use the following in the CURSORS above.
SELECT x.publishdate, y.firstname, y.lastname, y.age, z.initialValue AS FirstValue, z.HighestValue AS Highest, z.LastValue AS Last FROM TABLE x LEFT OUTER JOIN TABLE y ON x.id = y.id INNER JOIN TABLE z ON x.id = z.id
Example data CA1000 CA10001 CA10002 CA10003 CA11597 CA11603 CA1001 CA998 CA999 As you can see, CA11603 is the largest number in this list. When I try the follow sql code, SELECT MAX([MyCode]) FROM [MyTable] WHERE (SUBSTRING([MyCode], 1, 2) = 'CA') The largest number comes back as CA997 When I try MAX([MyCode]) FROM [MyTable] WHERE [MyCode] LIKE 'CA%' The largest number comes back as CA997
SELECT TOP 1 (SchoolMasterCode) FROM SchoolMaster WHERE (SUBSTRING(SchoolMasterCode, 1, 2) = 'CA') ORDER BY Schoolmastercode The largest comes back as CA10001 When I try.... SELECT TOP 1 (SchoolMasterCode) FROM SchoolMaster WHERE (SUBSTRING(SchoolMasterCode, 1, 2) = 'CA') The largest comes back as CA1278 What am I doing wrong?
The code below is almost there but falls over on Recordno 8:
select curr.recordno,curr.speed ,CASE WHEN curr.speed >= ISNULL(prev.speed,0) THEN curr.speed ELSE ( SELECT MAX(speed) FROM speedtest WHERE recordno between (CASE WHEN curr.speed >= prev.speed then curr.recordindex else prev.recordno end ) and curr.recordno
One employee has two pay rates for two different jobs:
Job A: Rate $10.00 Job B: Rate $15.00
I will be updating their record so that they only have one job going forward, Job C. I need Job C to equal their HIGHER of the two existing jobs.
I have a select statement to find what the higher rate is. However, I am not sure how I can apply the rate to be the new job's rate. Here's what I used to find the highest rate for one single person:
SELECT max(rate), employeeID FROM JobsTable inner join IDTable on JobsID2 = IDID2
WHERE JobCode in ('JOBA','JOBB') and EmployeeID = '12345' GROUP BY EmployeeID
(this returns the employee ID from one table, and the highest rate from Jobs A and B from another table)
I can get it to update to add JobC -- how can I get it to assign the result from the above query to be the rate used for Job C?
Ok,I just need to know how to get the last record inserted by the highestIDENTITY number. Even if the computer was rebooted and it was twoweeks ago. (Does not have to do with the session).Any help is appreciated.Thanks,Trint
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 need a query to find max serial number by comparing two different tables. Here is my requirementI 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 exampleIf Table1 max is 245 where partno=2 and ano=2and Table2 max is 343 where partno=2 and ano=2Then 343 is max serial noIf Table1 max is 435 where partno=2 and ano=2and Table2 max is 34 where partno=2 and ano=2Then 435 is max serial noI 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 Pls give me a simple query to find max srno.
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 ??
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.
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
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.
