I am following your articles from quite a while and honestly learn alot from examples you always gave in your articles. I have a situation in which I am passing table name as a parameter and want to insert the information generated from select statement into the table but I am keep getting an errors, stating must declare as a table variable. If I declare as a table variable it stores the information into table variable and not insert the data into the table I want to take a look on below example

declare @tableName Varchar(100)
set @@tableName =’smtpF2.dbo.infoChange’;
Create table #temp
(
change_version_state varchar(max),
change_version_status varchar(200),
uniqueid varchar(20),
Country_code varchar(15),
Research_date varchar(15),
data_date varchar(14),
Make varchar(50),
Model varchar(50),
Versions varchar(255),
Model_year varchar(15),
doors varchar(10),
body varchar(10));
insert into #temp select * from infoChange
select * from #temp
declare @tableNames Varchar(100)
set @tableNames =’smtpF2.dbo.infoChange’;
insert into @tableNames select * from #temp

Your urgent reply / advise will be very appreciated
Thanks

DECLARE @i int
DECLARE @a table (i int)
SET @i = 0
WHILE @i < 100000
BEGIN
INSERT INTO @a values(@i)
SET @i = @i + 1
END

After which I have checked again the log file size and it was now 1536 kb.
So this shows us, that although table variables are not being rolled back, and although the log of tempdb is not used to redo anything anyway (since at startup tempdb is recreated), still any write to table variables is being logged to tempdb's log.
And this is something that deems to be unnecessary, especially due to the fact that SQL Server has to for writes to the log, and if SQL Server would not write table variables tot he log then there would probably be a performance gain.
As such I would say that for an OLAP server, I would rather have an extra spindle for the tempdb log rather then for the database log, since for reads the tempdb log perfomance is more of a concern.

My question is that – Is Table variable hits the performance? if yes then how and how we can manage it..

I want to create table permanent by the using procedure and pass it table name as variable as like below.

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[ProcInsTab]
@Emp_ID varchar(50),
@Password varchar(max),
@Emp_Name varchar(100),
@Address varchar(250),
@City varchar(50),
@Mobile_No varchar(10)
AS

CREATE TABLE @Emp_ID(
[Description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Catalog Version] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Mailed] [float] NULL ,
[Sales] [money] NULL ,
[Production $] [int] NOT NULL ,
[Orders] [float] NULL ,
[Response] [float] NULL ,
[Response of Test Control] [int] NOT NULL ,
[Average Invoice] [float] NULL ,
[SMP] [float] NULL ,
[SMP of Test Control] [int] NOT NULL ,
[Catalog Title] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Brand] [varchar] (1) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Drop Date] [smalldatetime] NULL
) ON [PRIMARY];
INSERT INTO [Employee_Master]
([Emp_ID]
,[Password]
,[Emp_Name]
,[Address]
,[City]
,[Mobile_No])
VALUES
(@Emp_ID, @Password,@Emp_Name, @Address,@City, @Mobile_No);
Please help me how to solved this problem.

Everytime we execute a batch in EXEC function a new session is created and tem tables and table variables created in earlier session becomes unaccessible. If you create a single batch then you can get the desired result as below:

DECLARE @SqlString as varchar(max)
SET @SqlString = ‘DECLARE @TableVar TABLE(Col1 VARCHAR(100))’
SET @SqlString = @SqlString + ‘INSERT INTO @TableVar (Col1) VALUES(”Table Var – Outside Tran”)’
EXEC (@SqlString)
SET @SqlString = @SqlString + ‘SELECT Col1 AS TableVar_BeforeTransaction FROM @TableVar’
EXEC (@SqlString)

Regards,
Pinal Dave

I have modified the above query by adding one more variable to store the SQL Statement in SQLString,
When executed, I got the error in the @TableVar

– Start –

DECLARE @TableVar TABLE(Col1 VARCHAR(100))
DECLARE @SqlString as varchar(max)

SET @SqlString = ‘INSERT INTO @TableVar (Col1) VALUES(”Table Var – Outside Tran”)’

EXEC (@SqlString)

SET @SqlString = ‘SELECT Col1 AS TableVar_BeforeTransaction FROM @TableVar’

EXEC (@SqlString)

– End –

Msg 1087, Level 15, State 2, Line 1
Must declare the table variable “@TableVar”.
Msg 1087, Level 15, State 2, Line 1
Must declare the table variable “@TableVar”.

——————————————————–

Please help me how to solved this problem.

Prepare the CREATE TABLE statement dynamically to create global or permanent table because temporary or table variable would not be accessible outside of execution statement.

Regards,
Pinal Dave

I want to create table by the using procedure and pass it table name as variable as like below.

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[ProcInsTab]
@Emp_ID varchar(50),
@Password varchar(max),
@Emp_Name varchar(100),
@Address varchar(250),
@City varchar(50),
@Mobile_No varchar(10)
AS

CREATE TABLE @Emp_ID(
[Description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Catalog Version] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Mailed] [float] NULL ,
[Sales] [money] NULL ,
[Production $] [int] NOT NULL ,
[Orders] [float] NULL ,
[Response] [float] NULL ,
[Response of Test Control] [int] NOT NULL ,
[Average Invoice] [float] NULL ,
[SMP] [float] NULL ,
[SMP of Test Control] [int] NOT NULL ,
[Catalog Title] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Brand] [varchar] (1) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Drop Date] [smalldatetime] NULL
) ON [PRIMARY];
INSERT INTO [Employee_Master]
([Emp_ID]
,[Password]
,[Emp_Name]
,[Address]
,[City]
,[Mobile_No])
VALUES
(@Emp_ID, @Password,@Emp_Name, @Address,@City, @Mobile_No);

Please help me how to solved this problem.

You need to make sure that you are executing all these queries at once.

This is table variable, so we need to declare at every execution time.

So here I think what did you do is:

First execute declare and insert statements and then you try to execute “select”. IN Table variable, you need to execute all statements at once then only you will get an actual result.

Scope of table variable is per execution.

Thanks,

Tejas

as like you said that i did below that but i got the error in the @TableVar

–Create Table Variable and insert single row

DECLARE @TableVar TABLE(Col1 VARCHAR(100))
INSERT INTO @TableVar (Col1)
VALUES(‘Table Var – Outside Tran’);

SELECT Col1 AS TableVar_BeforeTransaction
FROM @TableVar

THis is the error

Msg 1087, Level 15, State 2, Line 2
Must declare the table variable “@TableVar”.

can you explain that why error will come
Thanks & Regards,
D.Ponraj

create procedure foo
as
begin
declare @sql varchar(100)

set @sql=’CREATE TABLE #SalesTbl(file_no int,amount int,date datetime); ‘
set @sql+=’SELECT * FROM #SalesTbl’

exec(@sql)
end

exec dbo.foo
drop procedure foo

SELECT ‘day’ + CAST(DAY(Date) AS CHAR(2))

file_no
amount
date

is the above procedure possible

what i have to do is select the day part of the date(suppose 12/18/2009 i have to select 18) and put the value of amount into another tables column of that day (suppose day18)
is there any procedure to overcome this problem