How To Check Existance Of Temp Table

Sep 10, 2004

Within the execution of a t-sql script how do I check for the existance of a temporary table associated with the session or a global temporary table?

My understanding is that the table name doesn't get placed in the current database sysobjects table - it goes into tempdb. But the object name is cryptic (so as to be unique) and I see no way of associating it with the current session (@@SPID).

Thanks,
Fred

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Temp Table Existance

Feb 6, 2001

hi all,

how do i check if a temp table of a given name already exists on the current connection?

in the application i am working on, some reports are very complicated and use temp tables generated on the fly. these tables do not get cleared up sometimes and the next table generation statement bombs. i do not want to touch that code.

thanx.

:-)

hemant

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Validating The Existance Of A Temp Table

Oct 16, 2007

Hi there,

I was wondering if there's a way to check if a temp table already exists on my db.

I used to do that for regular table:
IF EXISTS(SELECT name FROM sysobjects WHERE type='U' AND name = 'myTableName')
... do something ....

But it doesn't works with temp table... Is there a way to do it ?

Thanks


O :shocked:

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Check For Column Existance Before Alter Table Statement

Feb 14, 2000

Hello all,

I am trying to add columns to several tables in a singular database. I want to check to see if the column exists in a given table first before executing the alter table command so that I can skip that command if the column already exists, and avoid aborting my script prematurely. I can't seem to find a way to check for the column's existance. Any suggestions?

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SSIS Script Task To Check For File Existance

Jul 3, 2006

Hi all,

Let me apologize in advance for what I know is a very basic question,
but so far I'm not being terribly successful trying to find sample code
to learn from.



I'm trying to write (my first!) .Net Script in SSIS to check for the
existance of a file (since that seems to be the only way to do it).



I've created the Script Task, with the following settings:

PrecomplieScriptIntoBinaryCode = False (it complained at one point in time (possibly on validation))

EntryPoint = ScriptMain

ReadOnly Variables = ProductBuyListFileLocation, ProductBuyListFileName

ReadWrite Variable = FileFound



Now the ReadOnly variables have the 2 components necessary for a file location, i.e.:

ProductBuyListFileLocation = 'D:TestingProductInformationEnhancements'

ProductBuyListFileName = 'buyList.xls'



So, I'm now trying to check the existance with the following .Net Script code:

-------code--------

Imports System

Imports System.Data

Imports System.Math

Imports System.IO

Imports Microsoft.SqlServer.Dts.Runtime



Public Class ScriptMain



' The execution engine calls this method when the task executes.

' To access the object model, use the Dts object. Connections, variables, events,

' and logging features are available as static members of the Dts class.

' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.

'

' To open Code and Text Editor Help, press F1.

' To open Object Browser, press Ctrl+Alt+J.



Public Sub Main()

'

' Add your code here

'

Dim FileLocation As String

Dim DTSVariables As Variables



If
System.IO.File.Exists((CStr(DTSVariables("ProductBuyListFileLocation").Value)
+ (CStr(DTSVariables("ProductBuyListFileLocation").Value)))) Then

DTSVariables("FileFound").Value = 1

Else

DTSVariables("FileFound").Value = 0

End If

Dts.TaskResult = Dts.Results.Success

End Sub



End Class

-------code--------



if fails with this message, which I'm not finding too helpful:

at
ScriptTask_6c9d28f1bd3045739c4237bd588e3835.ScriptMain.Main() in
dts://Scripts/ScriptTask_6c9d28f1bd3045739c4237bd588e3835/ScriptMain:line
28



Is it complaining about not being able to find/address my ReadOnly variable? If so, what am I doing wrong?



TIA

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SSIS Script Task To Check For File Existance

Jul 3, 2006

Hi all,

Let me apologize in advance for what I know is a very basic question,
but so far I'm not being terribly successful trying to find sample code
to learn from.



I'm trying to write (my first!) .Net Script in SSIS to check for the
existance of a file (since that seems to be the only way to do it).



I've created the Script Task, with the following settings:

PrecomplieScriptIntoBinaryCode = False (it complained at one point in time (possibly on validation))

EntryPoint = ScriptMain

ReadOnly Variables = ProductBuyListFileLocation, ProductBuyListFileName

ReadWrite Variable = FileFound



Now the ReadOnly variables have the 2 components necessary for a file location, i.e.:

ProductBuyListFileLocation = 'D:TestingProductInformationEnhancements'

ProductBuyListFileName = 'buyList.xls'



So, I'm now trying to check the existance with the following .Net Script code:

-------code--------

Imports System

Imports System.Data

Imports System.Math

Imports System.IO

Imports Microsoft.SqlServer.Dts.Runtime



Public Class ScriptMain



' The execution engine calls this method when the task executes.

' To access the object model, use the Dts object. Connections, variables, events,

' and logging features are available as static members of the Dts class.

' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.

'

' To open Code and Text Editor Help, press F1.

' To open Object Browser, press Ctrl+Alt+J.



Public Sub Main()

'

' Add your code here

'

Dim FileLocation As String

Dim DTSVariables As Variables



If
System.IO.File.Exists((CStr(DTSVariables("ProductBuyListFileLocation").Value)
+ (CStr(DTSVariables("ProductBuyListFileLocation").Value)))) Then

DTSVariables("FileFound").Value = 1

Else

DTSVariables("FileFound").Value = 0

End If

Dts.TaskResult = Dts.Results.Success

End Sub



End Class

-------code--------



if fails with this message, which I'm not finding too helpful:

at
ScriptTask_6c9d28f1bd3045739c4237bd588e3835.ScriptMain.Main() in
dts://Scripts/ScriptTask_6c9d28f1bd3045739c4237bd588e3835/ScriptMain:line
28



Is it complaining about not being able to find/address my ReadOnly variable? If so, what am I doing wrong?



TIA

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Function To Check The Existence Of A Temp Table

Jun 13, 2006

This function, F_TEMP_TABLE_EXISTS, checks for the existence of a temp table (## name or # name), and returns a 1 if it exists, and returns a 0 if it doesn't exist.

The script creates the function and tests it. The expected test results are also included.

This was tested with SQL 2000 only.



if objectproperty(object_id('dbo.F_TEMP_TABLE_EXISTS'),'IsScalarFunction') = 1
begin drop function dbo.F_TEMP_TABLE_EXISTS end
go
create function dbo.F_TEMP_TABLE_EXISTS
( @temp_table_name sysname )
returns int
as
/*
Function: F_TEMP_TABLE_EXISTS

Checks for the existence of a temp table
(## name or # name), and returns a 1 if
it exists, and returns a 0 if it doesn't exist.

*/
begin

if exists (
select *
from
tempdb.dbo.sysobjects o
where
o.xtype in ('U')and
o.id = object_id( N'tempdb..'+@temp_table_name )
)
begin return 1 end

return 0

end
go
print 'Create temp tables for testing'
create table #temp (x int)
go
create table ##temp2 (x int)
go
print 'Test if temp tables exist'

select
[Table Exists] = dbo.F_TEMP_TABLE_EXISTS ( NM ),
[Table Name] = NM
from
(
select nm = '#temp' union all
select nm = '##temp2' union all
select nm = '##temp' union all
select nm = '#temp2'
) a


print 'Check if table #temp exists'

if dbo.F_TEMP_TABLE_EXISTS ( '#temp' ) = 1
print '#temp exists'
else
print '#temp does not exist'


print 'Check if table ##temp4 exists'
if dbo.F_TEMP_TABLE_EXISTS ( '##temp4' ) = 1
print '##temp4 exists'
else
print '##temp4 does not exist'
go

-- Drop temp tables used for testing,
-- after using function F_TEMP_TABLE_EXISTS
-- to check if they exist.

if dbo.F_TEMP_TABLE_EXISTS ( '#temp' ) = 1
begin
print 'drop table #temp'
drop table #temp
end

if dbo.F_TEMP_TABLE_EXISTS ( '##temp2' ) = 1
begin
print 'drop table ##temp2'
drop table ##temp2
end


Test Results:

Create temp tables for testing
Test if temp tables exist
Table Exists Table Name
------------ ----------
1 #temp
1 ##temp2
0 ##temp
0 #temp2

(4 row(s) affected)

Check if table #temp exists
#temp exists
Check if table ##temp4 exists
##temp4 does not exist
drop table #temp
drop table ##temp2



CODO ERGO SUM

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How To Check If Employees Have Full Month - If Not Move To Temp Table

Jan 10, 2008

need help
how to check in table if all the employees have Full month


if it double days fix it

if the employees have less days ! > move to temp table

for eny problem with this employee (check continuity or error) move to temp table !
i have stored procedure that insert employees for next month "Full month"
from start of the month until end of the month
how to check continuity and if i don't give less days OR double days in month
like if the month is 29 days the employee must have 29 not more

for eny problem with this employee move to temp table !

situation 1 employees have less days !
sn empid ShiftDate day
-------------------------------------------------
1 111111 2008-02-01 Tuesday
2 111111 2008-03-02 Wednesday
3 111111 2008-04-03 Thursday
4 111111 2008-03-04 Friday
5 111111 2008-03-05 Saturday
6 111111 2008-03-06 Sunday
7 111111 2008-03-07 Monday
. ----------------------------------------------
8 111111 2008-03-09 Wednesday
9 111111 2008-03-10 Thursday
.......................................................................until end of the month
99 222222 2008-02-01 Tuesday
100 222222 2008-03-02 Wednesday
101 222222 2008-04-03 Thursday
102 222222 2008-03-04 Friday
. ----------------------------------------------
104 222222 2008-03-06 Sunday
105 222222 2008-03-07 Monday
106 22222 2008-03-09 Wednesday
108 22222 2008-03-09 Wednesday
109 22222 2008-03-10 Thursday
.......................................................................until end of the month

situation 2 employee have double days!
sn empid ShiftDate day
-------------------------------------------------
1 111111 2008-02-01 Tuesday
2 111111 2008-03-02 Wednesday
3 111111 2008-04-03 Thursday
4 111111 2008-03-04 Friday
5 111111 2008-03-05 Saturday
6 111111 2008-03-06 Sunday
7 111111 2008-03-07 Monday
8 111111 2008-03-09 Wednesday
9 111111 2008-03-09 Wednesday
10 111111 2008-03-10 Thursday
.......................................................................until end of the month
99 222222 2008-02-01 Tuesday
100 222222 2008-03-02 Wednesday
101 222222 2008-04-03 Thursday
102 222222 2008-03-04 Friday
103 222222 2008-03-04 Friday
104 222222 2008-03-05 Saturday
105 222222 2008-03-06 Sunday
106 222222 2008-03-07 Monday
107 22222 2008-03-09 Wednesday
108 22222 2008-03-09 Wednesday
109 22222 2008-03-10 Thursday
.......................................................................until end of the month

TNX

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[Code] ....

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[code]....

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Create table scripts (
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UserName char(50),
ScrRan char(50),
StartTime datetime default getdate(),
EndTime datetime);

Create table errors (
ID int,
UserName char(50),
UserLogin char(50),
ErrorNumber int,
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declare @startTime datetime
declare @endTime datetime

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UPDATE #Temp
SET pub_Name = UPPER(pub_Name)


SELECT *
INTO Publisher
FROM #Temp


--Begins Error Checking Routine
select @error = @@error

IF @error <> 0
BEGIN
select @msg ='error: ' + convert(varchar(7), @error) +
''
insert into errors values (@@SPID, USER, USER_NAME(), @error,
@msg, getDate())
END
ELSE
BEGIN
select @endTime = getDate()

insert into scripts values (@@SPID, SYSTEM_USER, @startTime, @endTime)
END
select * from errors
select * from scripts




lost and loaded.

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Advantage Of Derived Table Over Temp Table

Jan 22, 2008

Hi, I wanna know is there any advantage of perf gain when using Derived Tables over Temp Tables, advice me which one is better to use. Can I create Indexes and Insert/Update records into Derived Tables.


-Senthil

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