SQL Server 2014 :: Using Newly Created Column For Doing Further Calculations In SAME Query
Apr 12, 2015
I am new to SQL Programming. I am learning the basics. I am trying to create a simple query like this -
SELECT
Column_1,
Column_2,
Column_3,
10*Column_1 AS Column_4,
10*Column_2 AS Column_5,
-- I am not being able to understand how to do this particular step Column_1*Column_5 As Column_6
FROM Table_1
First 3 Columns are available within the Original Table_1
The Column_4 and Column_5 have been created by me, by doing some Calculations related to the original columns.
Now, when I try to do FURTHER CALCULATION on these newly created columns, then SQL Server does not allows that.
I was hoping that I will be able to use the Newly Created Columns 4 and 5 within this same query to do further more calculations, but that does not seems to be the case, or am I doing something wrong here ?
If I have to create a new column by the name of Column_6, which is actually a multiplication of Original Column_1 and Newly Created Column_5 "I tried this - Column_1*Column_5 As Column_6", then what is the possible solution for me ?
I have tried to present my problem in the simplest possible manner. The actual query has many original columns from Table_1 and many Calculated columns that are created by me. And now I have to do various calculations that involve making use of both these type of columns.
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Apr 12, 2015
I am trying to create a simple query like this -
SELECT
Column_1,
Column_2,
Column_3,
10*Column_1 AS Column_4,
10*Column_2 AS Column_5,
-- I am not being able to understand how to do this particular step Column_1*Column_5 As Column_6
FROM Table_1
First 3 Columns are available within the Original Table_1
The Column_4 and Column_5 have been created by me, by doing some Calculations related to the original columns.
Now, when I try to do FURTHER CALCULATION on these newly created columns, then SQL Server does not allows that.
I was hoping that I will be able to use the Newly Created Columns 4 and 5 within this same query to do further more calculations, but that does not seems to be the case?
If I have to create a new column by the name of Column_6, which is actually a multiplication of Original Column_1 and Newly Created Column_5 "I tried this - Column_1*Column_5 As Column_6", then what is the possible solution?
I have tried to present my problem in the simplest possible manner. The actual query has many original columns from Table_1 and many Calculated columns that are created by me. And now I have to do various calculations that involve making use of both these type of columns.
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Sep 29, 2015
I am getting ready to start a project where I am charged with moving out old data from production into a newly created historical DB. We have about 8 tables that are internal audit tables, that are big and full of old data. These tables are barely used and are taking up way too much space and time for maintenance.
I would like to create a way (SSIS?) to look at the date field in each of the 8 tables and copy out anything older than two years into my newly created history DB. Then deleting the older records from the source DB.
I don't know if SSIS is the best method to use. If it is, what containers to use to move over data, then how to do delete from source?
Can I do the mass deletes on my audit source tables without impacting performance/indexes/fragmentation?
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Jul 25, 2015
I have a four tables called plandescription, plandetail and analysisdetail. The table plandescription has the columns DetailQuestionID which is the primary and identity column and a QuestionDescription column.
The table plandetail consists of the column PlanDetailID which the primary and identity column, DetailQuestionID which is the foreign key attribute of plandescription table and a planID column.
The third table analysisdetail consists of a analysisID which the primary and identity column, PlanDetailID which is the foreign key attribute of plandetail table and a scenario.
Below is the schema of the three tables
I have a two web form that will insert, update and delete data into these three tables in a two transaction. One web form will perform CRUD operations in plandescription and plandetail table. When the user inserts QuestionDescription and planid in this web form, I will insert the QuestionDescription Value in the plandescription table and will generate a DetailQuestionID value and this value is fed to the plandetail table with the planid. Here I will generate a PlanDetailID.
Once this transaction is done, I will show the second web form in which the user enters the scenario and this will be mapped with the plandescription using the PlanDetailID.
This schema cannot be changes as this is the client requirement. When I insert values I don’t have any problem. However when I update existing data, I need to delete existing PlanDetailID in the plandetail table and recreate PlanDetailID data for that DetailQuestionID and planID. This is because, the user will be adding or deleting a planID associated with the QuestionDescription.
Once I recreate PlanDetailID for that DetailQuestionID and planID, I need to update the old PlanDetailID with the new PlanDetailID in the third table analysisdetail for the associated analysisID.
I created a #Temp table called #DetailTable to insert the values analysisID, planid and old PlanDetailID and new PlanDetailID so that I can have them in update statement once I delete the data from plandetail table for that PlanDetailID.
Then I deleted the plandetailid from the plandetail table and recreate PlanDetailID for that DetailQuestionID. During my recreation I fetched the new PlanDetailID’s created into another temp table called #InsertedRows
After this I am running a while loop to update the temp table #DetailTable with the newly created PlanDetailID for the appropriate planID’s. The problem is here. When I have the same number of planID’s for example 2 planID’s 1,2 I will have only two old PlanDetailID and new PlanDetailID for that planID and analysisID.But When I add a new PlanID or remove a existing planID I am getting null value for that newly added or deleted planID. This is affecting my update statement of analysisdetail table as PlanDetailID cannot be null.
I tried to remove the Null value from the #DetailTable by running the update statement of analysis detail in a while loop however its not working.
DECLARE @categoryid INT = 8
DECLARE @DetailQuestionID INT = 1380
/*------- I need the query to run for the below three data.
Here i'm updating my planids that already exists in my database*/
DECLARE @planids VARCHAR(MAX) = '2,4,5'
[code].....
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Apr 12, 2015
I am trying to create a simple query like this -
SELECT
Column_1,
Column_2,
Column_3,
10*Column_1 AS Column_4,
10*Column_2 AS Column_5,
-- I am not being able to understand how to do this particular step Column_1*Column_5 As Column_6
FROM Table_1
First 3 Columns are available within the Original Table_1
The Column_4 and Column_5 have been created by me, by doing some Calculations related to the original columns.
Now, when I try to do FURTHER CALCULATION on these newly created columns, then SQL Server does not allows that.
I was hoping that I will be able to use the Newly Created Columns 4 and 5 within this same query to do further more calculations, but that does not seems to be the case, or am I doing something wrong here ?
If I have to create a new column by the name of Column_6, which is actually a multiplication of Original Column_1 and Newly Created Column_5 "I tried this - Column_1*Column_5 As Column_6", then what is the possible solution for me ?
I have tried to present my problem in the simplest possible manner. The actual query has many original columns from Table_1 and many Calculated columns that are created by me.And now I have to do various calculations that involve making use of both these type of columns.
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Apr 2, 2007
We've been running a mirrored database (using certificates since we don't have a domain) and it's all working well. Last week we decided to add a witness for automatic failovers, but for some reason I just can not get the witness to connect to the Partner2 server.
See screenshot here
Please help me troubleshoot this - I re-created the endpoints / users / certificates but it's still not working. Where can I get more information on what exactly the problem is? Can I test the endpoints somehow?
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Jun 17, 2015
I run a query
select col1, col2, col3, col4
from Table
where col2=5
order by col1
I have a primary key on the column.The execution plan showing the clustered index scan cost 30% & sort cost 70%..When I run the query I got missing index hint on col2 with 95% impact.So I created the non clustered index on col2.The total executed time decreased by around 80ms but I didn't see any Index name that is using in the execution plan.After creating the index also I am seeing same execution plan
The execution plan showing the clustered index scan cost 30% & sort cost 70% but I can see the total time is reducing & Logical reads on that table is reducing.I am sure that index is useful but why there is no change in the execution plan?
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Nov 8, 2007
hello, i have a problem in my sql. im using a stored procedure and i want to get the newly created id number to be used to insert in the other table.it works like:insert into table() values()select @id = (newly created id number) from tableinsert into table1() values(@id) something like that.
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Feb 17, 2000
I am trying to execute three dts packages from a Job that I created. When creating the steps I am setting the Type To: Operating System Command(CmdExec).
The Command I am using is: dtsrun /S servername /E /dtsPackageName
For some reason whenever I try to run thes jobs it fails. Within this Job I have three steps. For each step I am using the same job but with a different package name. I have a trusted connection so my command should work just fine. What am I doing wrong. Can some please explain this process.
Thanks
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Feb 21, 2006
Hi
I had DTS the Northwind sample database from SqlServer 2000 to 2005. It's went ok and no errors. Then, I created a SP named upGetCustomer, bascially it queries the Customers table and list some of it's fields and order by CustomerId,CustomerName, Country decrementally. SP is so simple and has no errors.
Then, I created a SqlServer project in VS2005 using C#. Add store procedure class as below,
using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
public partial class StoredProcedures
{
[Microsoft.SqlServer.Server.SqlProcedure]
public static void Customers(string customerid)
{
using (SqlConnection sqlConn =
new SqlConnection("context connection=true"))
{
sqlConn.Open();
SqlPipe sqlPipe = SqlContext.Pipe;
SqlParameter param = new SqlParameter("@custId", SqlDbType.VarChar, 5);
param.Value = customerid;
SqlCommand sqlCmd = new SqlCommand();
sqlCmd.CommandType = CommandType.StoredProcedure;
sqlCmd.CommandText = "upGetCustomer";
sqlCmd.Parameters.Add(param);
SqlDataReader rdr = sqlCmd.ExecuteReader();
SqlContext.Pipe.Send(rdr);
}
}
I had taken method of created SQLCLR from source in Microsoft website, but coding is mine, and hopes it is correct. I used SqlConnection string as 'context connection=true' which I still not quite sure what does it means, hopes it mean current connection I am using on my Windows authentication.
The project did compiled & deployed OK on the VS2005 side.
The problem is that when I tried to locate the assembly on the Sql Server 2005, but can't find it anywhere on Sql Server.
I did try complied and deloyed again, it keeps saying there is an error in deployment as customers assembly is already exist on the database. I then, tried to remove this assembly on the database using SQL script, drop assembly customers in the Northwind database but got error saying it does not exist. So where is it???
Please help...
Thank you
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Aug 2, 2014
I have a table that I have created a table and desire to do some basic math by adding a few new columns. The problem is that i cant get this to work without create many new select statements. The new columns that I wish to add refer to other newly created columns. Is there a way I can do this with CTW or subqueries? Unless it is a best practice to chain out the logic for the newly created columns
I have an example from AdventureWorksDW since the data is very accessible. I can safely create EMP_TENURE and PTO_REMAINING is this select statement. I would then need to create a new select statement to define 'BONUS' and then another select statement to define 'NEW_COL1' and so on.
Im still pretty new at SQL and am trying to learn how to complete such a task using subqueries or CTE.
SELECT
NAME = [LastName] + ',' + [FirstName]
,HireDate
,Title
,DepartmentName
,BaseRate
,VacationHours
,SickLeaveHours
[Code] ....
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Jun 18, 2008
I created a database called sports and then created a table which I'm going to use as a template for other tables within the same database.
What is the proper way to structure and implement copying this template table?
Should I store the template table under the system tables folder?
How do I copy the template table and create a new table from this template?
Thanks you
Goldmember
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Mar 10, 2007
Hi!
I have a piece of code that connects to the master database and uses the simple 'CREATE DATABASE MYDATABASE' statement to create a new database on an sql server 2005 express instance.
I then close that connection and try to open a new connection using my newly created database. I use integrated authentication in both cases. However, I get the following error: Cannot open database "MYDATABASE" requested by the login. The login failed.Login failed for user 'DOMAINNAMEusername'.System.Data.SqlClient.SqlException: Cannot open database "MYDATABASE" requested by the login. The login failed.
I don't get this error all the time. I tried to run my code many times and it some times work. But in some cases it doesn't. The database is always created but some times I cannot connect to it. But again, if I wait a little and try again with the same database, the connection is made.
I know that my connections are opened and closed normally and they don't remain open. So I don't believe I reach the maximum number of available connections.
I also sometimes get this exception : A connection was successfully established with the server, but then an
error occurred during the login process. (provider: Shared Memory
Provider, error: 0 - No process is on the other end of the pipe.
Any clue?
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Mar 13, 2014
Is there a formula for calculating how expensive a transaction will be in terms of disk space used before its run. I dont want it accurate to the MB, but rough enough so I can determine how much additional space to assign to a transaction log or SAN volume.
Currently we're reindexing ~25billion rows, nothing too wide, say 12 columns consisting of 1 varchar(50) and the rest ints, bits and money.Roughly speaking if I reindex the clustered index on an int indetity, (with sort_in_tempdb) how would I calculate the the disk space used?
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Mar 23, 2008
I created a new database in SQL Server 2000, using the command
"CREATE DATABASE ContactManager ON PRIMARY(NAME = ContactManager,FILENAME ='C:Program FilesMicrosoft SQL ServerMSSQLDataContactManager.mdf',SIZE = 5MB,MAXSIZE = 20MB,FILEGROWTH = 5MB)LOG ON(NAME = ContactManager,FILENAME = 'C:Program FilesMicrosoft SQL ServerMSSQLDataContactManager.ldf',SIZE = 2MB,MAXSIZE = 10MB,FILEGROWTH = 2MB)Go"
Databse was successfully created and I created two tables also in it. Now when i try to create a new connection in Visual Web Developer 2005, I get the error message :
"Directory lookup for the file "C:Program FilesMicrosoft SQL ServerMSSQLDataContactManager.mdf" failed with the operating system error 5 (Acess is denied.).
Cannot attatch the file "C:Program FilesMicrosoft SQL ServerMSSQLDataContactManager.mdf" as 'ContactManager'."
What else do I need to do use the database?
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Sep 11, 2014
I have many new tables for which i need to write Insert,Update and delete triggers manually. Is there any way to generate triggers script which takes table name as a input parameter and print/generate trigger's script?
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Sep 18, 2015
Why are the user databases that were created in the MSSQLSERVER default instance showing up in the newly created ALPHAONE instance? I'm successfully logging into the alphaone database as it shows as "DASAlphaOne,1xxxPport) at the top of the treeview in ssms. I'm logging in as sa and can edit anything.
The issue here is that all the user databases are shown and can even be edited. I created this instance in an effort to hide databases from whoever is not supposed to see.I was expecting a clean instance with only the system databases..Is there something that can be set to keep each instance's databases private into itself?
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Jul 20, 2006
Hello dear Forum,
I guess this should be rather simple to answer but i just don't get how to do this. I just want to import some data from an Access mdb file into a SQL Server 2005 Database.
As I dont want to create all tables in Sql Server 2005 beforehand i'd like to create them out of my SSIS Package. Therefore i use the 'Execute SQL Task' in the control flow before stepping into the dataflow where only a oledb-source and an oledb-destination exist...
VERY simple... My problem is, that i can't select the table from the selectionlist in the oledb-destination because it does not exist before executing the package...
If i create the table by hand just to be able to select it, that does not help. because if everything is set up and then i delete the table (because it will be created by the package anyway) an error occurs before executing the package - in the validation phase:
Package Validation Error: "Invalid object name 'myToBeCreatedTable'".
Can't i create tables on the fly which i use then in my dataflow tasks?
Kind regards,
Wolfgang
Hello dear Forum,
I guess this should be rather simple to answer but i just don't get how to do this. I just want to import some data from an Access mdb file into a SQL Server 2005 Database.
As I dont want to create all tables in Sql Server 2005 beforehand i'd like to create them out of my SSIS Package. Therefore i use the 'Execute SQL Task' in the control flow before stepping into the dataflow where only a oledb-source and an oledb-destination exist...
VERY simple... My problem is, that i can't select the table from the selectionlist in the oledb-destination because it does not exist before executing the package...
If i create the table by hand just to be able to select it, that does not help. because if everything is set up and then i delete the table (because it will be created by the package anyway) an error occurs before executing the package - in the validation phase:
Package Validation Error: "Invalid object name 'myToBeCreatedTable'".
Can't i create tables on the fly which i use then in my dataflow tasks?
Kind regards,
Wolfgang
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Jul 20, 2006
Hello dear Forum,
I guess this should be rather simple to answer but i just don't get how to do this. I just want to import some data from an Access mdb file into a SQL Server 2005 Database.
As I dont want to create all tables in Sql Server 2005 beforehand i'd like to create them out of my SSIS Package. Therefore i use the 'Execute SQL Task' in the control flow before stepping into the dataflow where only a oledb-source and an oledb-destination exist...
VERY simple... My problem is, that i can't select the table from the selectionlist in the oledb-destination because it does not exist before executing the package...
If i create the table by hand just to be able to select it, that does not help. because if everything is set up and then i delete the table (because it will be created by the package anyway) an error occurs before executing the package - in the validation phase:
Package Validation Error: "Invalid object name 'myToBeCreatedTable'".
Can't i create tables on the fly which i use then in my dataflow tasks?
Kind regards,
Wolfgang
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May 10, 2015
I run the following:
EXECUTE dbo.DatabaseBackup
@Databases = 'F1SB',
@Directory = 'F:SqlBackup2014',
@BackupType = 'FULL',
@Compress = 'Y',
@Encrypt = 'Y',
[code]...
I cannot see the file created in the directory. The account under which sql server the agen job run have full privileges on it and is sysadmin.Then i run the Command in ssms
BACKUP DATABASE [F1SB] TO DISK = N'F:SqlBackup2014<server>F1SBFULLIGS-DB01_F1SB_FULL_20150510_214455.bak' WITH NO_CHECKSUM, COMPRESSION, ENCRYPTION (ALGORITHM = AES_256, SERVER CERTIFICATE = [serverCertificate])
and I get this error message:
Msg 3013, Level 16, State 1, Line 13
BACKUP DATABASE is terminating abnormally.
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May 20, 2015
I have two inline selects against a table with a nonclustered columnstore on SQL 2014 (12.0.2000). Both execute in batch mode and when I inner-join the two, they continue to execute in batch mode. When I cross join them, one executes in row mode. Below is some SQL to simulate the issue.
-- The purpose of this script is to demonstrate that
-- two queries against a columnstore index that each execute in batch mode
-- will continue to execute in batch mode when inner joined.
-- However, one of the queries will execute in row mode when cross-joined.
-- Create function to return 0 to n rows
IF OBJECT_ID('dbo.IntCount') IS NOT NULL
DROP FUNCTION dbo.IntCount;
[Code] .....
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Aug 15, 2014
I have set the environment set for AutoRecover (for every 3 minutes and Keep information for 7 days under the SSMS 2014 Menu: Tools -> Option ->Environment -> AutoRecover).
I've rebooted the box and restarted the SQL Server service and nothing seems to create the files.
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Jul 15, 2015
I am setting up SQL audit on sql servers in my environment based on requirement. I want to create database specifications ASAP database created. I tried DDL trigger but Audit doesn't support triggers. So I created audit specifications on model database. the only problem with this is every specification created on new database with same name.database specification name includes newly created database name or other methods to create database specifications on newly created databases.
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Oct 24, 2015
How can i assign permissions to a newly created users as of an existing user?
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Nov 6, 2015
As per attachment, i have been created replications but in local subscription it is not populated any thing at the same time, Subscription database has been created but tables is not populated as per publication table.
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Nov 12, 2014
I read , When sql server Database having multiple data files within single filegroup then sql server writes data in multiple proportional file algorithm where the amount of data written to a file is proportionate to the amount of free space in that file, compared to other files in the filegroup.
so if there is no filegroups created and multiple secondary files are attached in databse , is there same way data stored and writes data in multiple files by the same algorithm or any different way.
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Aug 17, 2015
I have a TableA where data get inserted from Excel(IMPORT/EXPORT wizard)
TableA;
ID(identity) Date (NOT NULL Defaulyt Getdate() )
Name Phone
1 2014-06-17 17:28:21.190
Nick 12345678910
2 2014-05-17 17:28:21.190
Stan 00045678910
3 2015-08-17 17:28:21.190
Kim 11111678910
4 2015-08-17 17:28:21.190
Tom NUll
3,4 are the rows i have inserted now , you can see by date, likewise i have 100,000 rows(old and new combination) and now the data from excel to TableA can be imported/exported daily , hourly, weekly basis.
Now i want to find out only the rows which are imported to tableA today, or hours back, or yesterday .....
the reason is ,
Step1:get data from excel and import to tableA( this is a manual Step) and i know when the data is inserted with exact date and time.
Step2: get newly inserted rows from TableA and pass them as Parameters in Stored Procedure.( i may run step 2 after 1 hour, or after 1 day or after 1 week ,but i want only rows that are inserted )
I tried with using where Datecreated, but did work.
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Jun 5, 2006
Timespan = 30 days
Start Date = January 1st
Last Processed Day = NULL
Next Cycle Day = IF(Last Processed Day IS NULL) Start Date + TimeSpan ELSE Last Processed Day + TimeSpan
Is it possible to setup a column to do this from sql?
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Jul 23, 2005
Hi,I have a select query that returns three integer fields from a table thevalues range from 0 to 5. On each row I would like to calculate the averagevalue in the three fields however, the difficulty is that only the rowswhere the value is greater than 0 should be included in the calculation.To make this clearer please consider the following example:Col1 Col2 Col2 Average Calculation1 2 3 2 (Col1+Col2+Col3)/32 2 0 2 (Col1+Col2+Col3)/2The first row should be divided by 3 because each of the three columns has avalue greater than 0, however the second row should be divided by 2 becauseonly two of the value are greater than 0.Is this possible?Also is is possible to pass the results of one calculation into anothercalculation.Thanks in advance,Steve
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Jul 23, 2005
If i want to split a computed column into two or more columns based onthe the length (its a varchar) of the computed column, how often willsql server determine what the computed column is? roughly along thelines ofselect comp_col,'comp_col 2'=case when datalength(comp_col)<=100 then comp_colelse left(comp_col,99) + '~' end,datalength(comp_col)from aTableAs you can see, in this scenario we use the computed coulumn,comp_col, in a few places, so does SQL server need to calculate thiseach time? I'm playing with this on the basis that it does and thustrying to shift the computed column out to a variable and thenmanipulte and return from their, but that has its own problems whenyou throw in additional parameters (trying to join table udf's) so ifSQL server is smart enough to not calculate the column each time Iwould save a lot of hassle?Cheers Dave
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Oct 10, 2007
Hi
Any one please tell me is there any possible way to identify the table modified date.
I have checked the table created date from sysobjects or by right click properties. my requirement is to identify the exact date of table modification and column creation,alter dates.
Is there any such provision in sql server 2000 or 2005 , My application is in sql server 2000.
I need to confirm this because some database structure modification has affected my application and causing dataloss i need to check with the date of structural change of table and lost data date
can any one help
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Oct 3, 2007
Hi,
I want to have a query where in i can use alias column names in the same query.
like eg
select 1 as 'a', 2 as 'b', a+b as 'c'
note that this query is getting big and is using sub queries.
Kindly help.
Thanks
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Jun 27, 2014
I am trying to run a UNION ALL query in SQL SERVER 2014 on multiple large CSV files - the result of which i want to get into a table in SQL Server. below is the query which works in MSAccess but not on SQL Server 2014:
SELECT * INTO tbl_ALLCOMBINED FROM OPENROWSET
(
'Microsoft.JET.OLEDB.4.0' , 'Text;Database=D:DownloadsCSV;HDR=YES',
'SELECT t.*, (substring(t.[week],3,4))*1 as iYEAR,
''SPAIN'' as [sCOUNTRY], ''EURO'' as [sCHAR],
[Code] ....
What i need is:
1] to create the resultant tbl_ALLCOMBINED table
2] transform this table using PIVOT command with following transformation as shown below:
PAGEFIELD: set on Level = 'Item'
COLUMNFIELD: Sale_Week (showing 1 to 52 numbers for columns)
ROWFIELD: sCOUNTRY, sCHAR, CATEGORY, MANUFACTURER, BRAND, DESCRIPTION, EAN (in this order)
DATAFIELD: 'Sale Value with Innovation'
3] Can the transformed form show columnfields >255 columns i.e. if i want to show all KPI values in datafield?
P.S: the CSV's contain the same number of columns and datatype but the columns are >100, so i dont think it will be feasible to use a stored proc to create a table specifying that number of columns.
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