How To Check For Table Existence Before Dropping It?
May 8, 2006
Apologies if this has been answered before, but the "Search" function doesn't seem to be working on these forums the last couple of days.
I'd just like to check if a table already exists before dropping it so that I can avoid an error if it doesn't exist. Doing a web search, I've tried along the lines of
"If (object_id(sensor_stream) is not null) drop table sensor_stream"
and
"If exists (select * from sensor_stream) drop table sensor_stream"
In both of these cases I get the error: "There was an error parsing the query. [ Token line number = 1,Token line offset = 1,Token in error = if ]"
Sooooo... what is the standard way to check for existence of a table before dropping it? Someone help? This seems like it should be simple, but I can't figure it out.
Thanks in advance!
Dana
View 7 Replies
ADVERTISEMENT
Jun 23, 2007
Dear All,
I wanted to know how do I know or check that whether a column exists in a table. What function or method should I use to find out that a column has already exists in a table.
When I run a T-SQL script which i have written does not work. Here is how I have written:
IF Object_ID('ColumnA') IS NOT NULL
ALTER TABLE [dbo].[Table1] DROP COLUMN [ColumnA]
GO
I badly need some help.
View 9 Replies
View Related
Jun 5, 2007
Check the field existence of a database table, if exist get the type, size, decimal ..etc attributes
I need SP
SP
(
@Tablename varchar(30),
@Fieldname varchar(30),
@existance char(1) OUTPUT,
@field_type varchar(30) OUTPUT,
@field_size int OUTPUT,
@field_decimal int OUTPUT
)
as
/* Below check the existance of a @Fieldname in given @Tablename */
/* And set the OUTPUT variables */
Thanks
View 4 Replies
View Related
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
View 1 Replies
View Related
Nov 3, 2015
I have a webpage where users can connect with other users by sending them a request. Sending the request just puts a row in a connect table that contains the users id, the targetusers id, a requesteddate, an accepted date and a disconnectdate (for the original requester to end the connection and a reject bit the the target can reject the request. Hoever I need to check to assure that the connect does nt already exist either as pending (requestdate is not null and accept date is null) or both dates are not null (connection already complete.).
ALTER PROCEDURE [dbo].[requestConnect]
-- Add the parameters for the stored procedure here
@requestor int,
@requested int
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from interfering with SELECT statements.
[Code] ....
View 4 Replies
View Related
Nov 27, 2000
we tried out the following code in query analyser -
create procedure TrialProc
as
select * from sakjdhf
when we executed this piece of TSQL in query analyser, we expected it to give an error or warning that no object by the name of sakjdhf exists ( as actually there is no such table or view in the database ). however to our surprise we got "command completed successfully " !!
does this mean the SQL server does not check for necessary objects when creating a stored procedure ? or is there some setting that we missed out whihch is causing SQL server to overlook the error in the code ?
View 3 Replies
View Related
Oct 8, 2015
I'm trying to figure out the best way to write a script to deploy environment variables to different servers. To create the variable I'm currently using catalog. create_environment_variable. I want to wrap that in an if not exist statement.I had thought about just blowing away all the variables and recreating them but I thought that wouldn't go over well in prod. I wasn't sure if by deleting the variable, references to the variable would be lost.
View 3 Replies
View Related
Oct 26, 2007
I have a data flow task inside a foreach loop container which will take multiple excel files and load into a sql table. Once all the excel files are loaded into the table, then at the end one of the column gets updated using execute sql task. Now I am trying to check for a file existence, if the file is not present in the folder then the data flow task should not be executed. Any help is greatly appreciated, I am thinking of using file system task for this, but not exactly sure. Thanks in advance.
View 13 Replies
View Related
Nov 7, 2000
I need to add syntax to a stored procedure to check for the existence of a specific indexes on a table before dropping it. If they do not exist I need it to NOT through an error message. Performing this on a table is relatively simple:
if exists (select * from sysobjects where id = object_id(N'[dbo].[TABLENAME]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[TABLENAME]
Since indexes are not represented in sysobjects how can I do this?
View 5 Replies
View Related
Sep 24, 2007
Hi,
I have a table with the follwing values
Table Cats
{
CatID, date
-----------------------
Cat1, D1
Cat2, D2
Cat3, D3
}
I just wanted to check whether Cat1 exists in the table. Can anyone post the query
Thanks
~MOhan
View 6 Replies
View Related
Oct 4, 2007
Hi!
SS2005:
create table #tmp(a int)
create index idxt1 on #tmp(a)
insert into #tmp values (42)
select * from sys.indexes
where name like '%idx%'
order by name
But I can't see any rows about idxt1 :-(
If I say
create index idxt1 on #tmp(a)
againg I got error, because it exists.
How to check for existence using query?
B. D. Jensen
View 3 Replies
View Related
Dec 31, 2003
I'm familiar with how to check for the existence of a table before dropping it using the following command:
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[xxx]
How does one check for the existence of a temp table (using # syntax) before dropping it? I've tried various flavors of this command and none work. One flavor is
use tempdb
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[#xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[#xxx]
CREATE TABLE #xxx (
NumID INTEGER IDENTITY(1,1),
Exhibitor_Id INTEGER NOT NULL,
Company_Id INTEGER NOT NULL
)
Thanks.
Nick
View 2 Replies
View Related
Feb 22, 2005
Hi all,
While cleaning up some code, I ran across the following statement in a stored proc - the purpose of which is to determine if a table exists in the local database: SELECT * FROM dbo.sysobjects where id = object_id(N'[dbo].[XML_PRINTDATE]') and OBJECTPROPERTY(id, N'IsUserTable') = 1of course I removed it from the IF just for testing purposes, but my quandry is this...
Why chose that select (converting table name to object ID) rather than just doing THIS:SELECT * FROM dbo.sysobjects where name = N'XML_PRINTDATE' and OBJECTPROPERTY(id, N'IsUserTable') = 1
I first thought it was to gain access to the "id" column value (and that may yet be the purpose of it), but the second code seems to work just peachy (I assume because the id column is present in the sysobjects table itself).
A follow-on question is this:
When I try to do the same check from another server (i.e.SELECT * FROM APRECEIVE1.DailyProd.dbo.sysobjects where name = N'XML_PRINTDATE' and OBJECTPROPERTY(id, N'IsUserTable') = 1) it of course fails because OBJECTPROPERTY only looks for the id on the local database.
So, do I CARE if it is a user table? (I am reasonably sure it is, of course) and if so, is there a way to check on the remote server for the object type?
Bottom line is I Think I can just simplify things and check for the object name on the remote server, but just don't want to take away any "warm fuzzy feeling" generated by the original stored proc, if such a warm fuzzy is of any benefit (though don't get me started on the relativity of warm fuzzies, I wrote my Thesis on that ;) )
View 9 Replies
View Related
Aug 10, 2015
I am using the following script to check existence of table in the Database and create it dynamically...
This is working when table not existed, it error-ed when the table existed...
This script i am using in the Exec Sql Task.....
[Execute SQL Task] Error: Executing the query "declare @ODSDB varchar(50)
declare @SQLSTMT varcha..." failed with the following error: "There is already an object named 'addressTable' in the database.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not
set correctly, or connection not established correctly.
declare @ODSDB varchar(50)
declare @SQLSTMT varchar(max)
set @ODSDB = 'SampleDB'
begin
set @SQLSTMT = '
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(''' + @ODSDB + '.dbo.addressTable'') and Type=''U'')
[Code] ...........
View 8 Replies
View Related
Nov 20, 2013
I have created a table as below mentioned. Then I want to alter the ID column as identity(1,1) without dropping the table as well as losing the data.
create table dbo.IdentityTest
(
id int not null,
descript varchar(255) null,
T_date datetime not null
)
View 7 Replies
View Related
Mar 19, 2012
I am using a Stored procedure in which I am creating a table and dropping that table at the end of execution. This SP is calling every 10 second (but no concurrent access) from my application. Is there any issue using the drop table command in the SP? will it create any memory fragmentation issue in SQL server?
View 7 Replies
View Related
Nov 22, 2002
I'm new to replication and would like to know how to drop an article published for replication. I believe I need to follow these steps, but I am unsure.
Step (1)
exec sp_dropsubscription @publication = N'db name',
@article = N'article name',
@subscriber = 'subscriber name',
@destination_db = N'db name'
Step (2)
exec sp_droparticle @publication = N'db name',
@article = N'article name'
Step (3)
drop the article on the publisher
Step (4)
drop the article on the subscriber
Is this the correct sequence or am I missing something.
Thanks, Dave
View 2 Replies
View Related
Jun 11, 2008
Hi Guys,
I am trying to DROP a table and recreate the table in a stored procedure and then I am trying to INSERT records into the newly created table in the same stored procedure.
I know I don't have to DROP the table, but I am trying to just get it to work. The process runs without error, but when I refresh the tables, the table I created isn't there. The T-SQL is as follows:
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[ImportFilesPremier]
AS
DROP TABLE dbo.[PremierTest]
CREATE TABLE [PremierTest] (
[AYQ] nvarchar(6) null ,
[CYQ] nvarchar(6) null ,
[Description] nvarchar(50) null,
[PIP] [decimal] (17,2) ,
[BI] [decimal](17,2) Not null,
[PD] [decimal](17,2) Not null,
[COLL] [decimal](17,2) not null,
[COMP] [decimal](17,2) not null,
[DCRAT] [nvarchar](2) null ,
[Agent][nvarchar](3) null ,
) ON [PRIMARY]
begin transaction
insert into [PremierTest]
select *
from dbo.[new agt type tri 0804]
WHERE dir_ceded_ind = 'C'
commit transaction
Any information on how I can tweak my code so it works properly would be greatly appreciated. Thank you.
View 4 Replies
View Related
Mar 20, 2007
I made a constraint on a temporary table in a stored procedure but now i can't delete it.
Here's what happened:
I ran this in a stored procedure
CREATE TABLE #TeFotograferen (RowID int not null identity(1,1) Primary Key,Stamboeknummer char(11) ,Geldigheidsdatum datetime, CONSTRAINT UniqueFields UNIQUE(Stamboeknummer,Geldigheidsdatum)
next time i ran the stored procedure it gave me
There is already an object named 'UniqueFields' in the database.
but since the temporary table is out of scope i cannot delete the constraint
I tried
delete from tempdb..sysobjects where name = 'UniqueFields'
and
declare @name
set @name=(SELECT name from sysobjects where id=(Select parent_obj from sysobjects where name='UniqueFields'))
drop table @name
giving me
Ad hoc updates to system catalogs are not allowed.
or
Cannot drop the table '#TeFotograferen__________________________________ __________________________________________________ _________________000000000135', because it does not exist or you do not have permission.
View 7 Replies
View Related
Nov 5, 2007
How do I go about iterating through every table in my database and empty each table so they contain no data?
I don't want to drop the tables and re-create them either.
Thanks.
View 6 Replies
View Related
Jan 11, 1999
Can anyone tell me how to change the datatype of a column.
Without dropping and recreating the table...
The table is empty...
THNK YOU VERY MUCH...
View 1 Replies
View Related
Dec 3, 1998
I have to load and unload many datatabases for testing. So I wanted to quickly remove a database, its devices and respective dat files
all at once.
Is there a way of completely dropping a database so that all trace of it is quickly gone?
View 3 Replies
View Related
Jan 16, 2006
In Microsoft SQL Server, I have a documents table and a table whichcategorizes the documents, which we'll call categories.I tried running UPDATE statements on the categories table previouslyand I ran into a foreign key constraint. The error given was "UPDATEstatement conflicted with COLUMN REFERENCE constraint FK..."So I got rid of the Foreign Key relationship, and tried running anUPDATE statement against the categories table again.I'm now getting the following message:'Cannot UPDATE "categories" because "documents" exists.'There must be something hanging around maintaining that relationship,but I'm not sure where it would be found.I was thinking about dropping the table and then adding it back again,but I'm not entirely sure what that would do.Any help is appreciated in advance.thanks,Geoff
View 3 Replies
View Related
Jan 19, 2007
For SQL 2005 transactional replication I have 1400 articles (tables, views, functions, sp) that are all replicated.
Will SQL 2005 allow me to drop a table from from the publication and drop it from the publication database that is referenced by exising views or sps that are replicated or does it somehow check that?
Linda
View 1 Replies
View Related
Jun 11, 1999
I am trying to drop the "allow nulls" characteristics on an existing table
column. I know that there are not Nulls currently in this column, nor will
there ever be. How do I get rid of that "allow nulls" checkmark on an
existing table structure? Thanks, Craig.
View 1 Replies
View Related
Sep 23, 2014
I am finding it difficult to find an example that allows for insertion of additional rows into a table, without dropping the table I'm inserting into. Or inserting specific values. Like this example..
[URL] ....
I have 6 table I am formatting the data to conform to the final table as I'm inserting it into, but none of these examples gives me the example needed. I am using SQL 2012.
<code>
SELECT
CONVERT(VARCHAR(50),[FName]) + ' ' + CONVERT(VARCHAR(50),[LName]) AS [CustName]
,CAST('ALARMCOM' as nvarchar(8)) as VendorName
,CONVERT(VARCHAR(25),[CUSTOMER_CS_ACCOUNT_NUMBER]) AS [Cust_ID]
,CONVERT(VARCHAR(40),[Charge_Description])as [ChargeType]
,CASE
[Code] ....
View 6 Replies
View Related
Apr 3, 2015
I want to create and drop the global temporary table in same statement.
I am using below command but I am getting below error
Msg 2714, Level 16, State 6, Line 11
There is already an object named '##Staging_Temp' in the database.
if object_id('Datastaging..##Staging_Temp') is not null
begin
drop table ##Staging_Temp
end
CREATE TABLE ##Staging_Temp(
[COL001] [varchar](4000) NULL,
[Code] ....
View 1 Replies
View Related
Jul 20, 2005
Hi All,I have a table in SQL Server 2000 that contains several million memberids. Some of these member ids are duplicated in the table, and eachrecord is tagged with a 1 or a 2 in [recsrc] to indicate where theycame from.I want to remove all member ids records from the table that have arecsrc of 1 where the same member id also exists in the table with arecsrc of 2.So, if the member id has a recsrc of 1, and no other record exists inthe table with the same member id and a recsrc of 2, I want it leftuntouched.So, in a theortetical dataset of member id and recsrc:0001, 10002, 20001, 20003, 10004, 2I am looking to only delete the first record, because it has a recsrcof 1 and there is another record in the table with the same member idand a recsrc of 2.I'd very much appreciate it if someone could help me achieve this!Much warmth,Murray
View 3 Replies
View Related
Dec 20, 2007
can sql server do this ?
table 1 that check table 2 and adding missing dates
this my employee table
table 1
table Employee on work
------------------------
empid basedate shift
----------------------------
12345678 01/04/2007 1
12345678 02/04/2007 1
12345678 03/04/2007 1
12345678 04/04/2007 1
12345678 05/04/2007 1
12345678 06/04/2007 1
12345678 07/04/2007 1
12345678 08/04/2007 1
12345678 09/04/2007 1
12345678 10/04/2007 1
98765432 20/04/2007 1
98765432 21/04/2007 3
98765432 22/04/2007 3
98765432 23/04/2007 5
98765432 25/04/2007 4
98765432 26/04/2007 4
98765432 27/04/2007 4
98765432 28/04/2007 4
98765432 30/04/2007 4
-----------------------------------------------------------------------------------
and i need to see the missing dates lkie this
in table 2
------------------------------------------------------
table 2 (adding missing dates with zero 0)
table Employee_all_month
------------------------
empid basedate shift
----------------------------
12345678 01/04/2007 1
12345678 02/04/2007 1
12345678 03/04/2007 1
12345678 04/04/2007 1
12345678 05/04/2007 1
12345678 06/04/2007 1
12345678 07/04/2007 1
12345678 08/04/2007 1
12345678 09/04/2007 1
12345678 10/04/2007 1
12345678 11/04/2007 0
12345678 12/04/2007 0
12345678 13/04/2007 0
12345678 14/04/2007 0
12345678 15/04/2007 0
12345678 16/04/2007 0
12345678 17/04/2007 0
12345678 18/04/2007 0
12345678 19/04/2007 0
12345678 20/04/2007 0
.................................and adding missing dates with zero 0 until the end of the month
.................................
12345678 31/04/2007 0
98765432 01/04/2007 0
98765432 02/04/2007 0
98765432 03/04/2007 0
98765432 04/04/2007 0
98765432 05/04/2007 0
98765432 06/04/2007 0
98765432 07/04/2007 0
98765432 08/04/2007 0
98765432 09/04/2007 0
..............................and adding missing dates with zero 0 only whre no dates in this month
.......................
98765432 20/04/2007 1
98765432 21/04/2007 3
98765432 22/04/2007 3
98765432 23/04/2007 5
98765432 25/04/2007 4
98765432 26/04/2007 4
98765432 27/04/2007 4
98765432 28/04/2007 4
98765432 30/04/2007 4
TNX
View 4 Replies
View Related
Oct 26, 2006
I downloaded Quest Software's freeware version ofComparison Suite. When I attempt to install, it tellsme that it requires .NET framework 1.1.4322. I alreadyhave .NET 2.0 installed (as part of the MS-SQL native client install)and I really don't want to mess that up.Is it *safe* to have the installer download/install .NET 1.1to coexist with 2.0? Is it likely to work?
View 1 Replies
View Related
Nov 1, 2006
Can someone show me some C# code for detecting if a SQL row exists or not? This seems like a very typical action and I cannot for the life of me find a tutorial online that explains this step. In my code I'm either going to INSERT or UPDATE a record. I tried sending a SELECT command through a ExecuteNonQuery, but only got -1 as a response. Apparently ExecuteNonQuery does not work with SELECT. I then saw that T-SQL has an EXISTS keyword, but I cannot see anyway to use that from within C#.So...can anyone share the typical code they use to identify if a row exists or not within a database. I guess I was execting there to be some method available to do this sort of thing.
View 1 Replies
View Related
Sep 6, 2005
Hi,I have two databases called DB1 and DB2. DB1 has a table called table1 and DB2 has table2.I want to write one SP into the DB1, that SP will check whether table2 into the DB2 is exists or not, how do I do it? Any help?I know if it is into the same database then,IF EXISTS (SELECT * FROM dbo.sysobjects WHERE ID = object_id(N'[table2]') and OBJECTPROPERTY(ID, N'IsTable') = 1)-- then do some thingI tried replacing "dbo.sysobjects" with "DB2.dbo.sysobjects", but no luck.Any Help???
View 2 Replies
View Related
Jun 9, 2008
Hi Friends,I have one table in the databse,i.e userTable with one field userNameIn my form I have one Label ,textbox for entering the userName and One button for submit,So I am entering the data into the table(userTable) after clicking on the submit buttonBut my problem is before entering the data into the table I want to find wheather the given data exits or notif its not exists the data has to insert into the table otherwise its has to display the message"the user is already existed"for this I wrote the code like this in C# public Boolean isUserExists() { SqlCommand cmduserName = new SqlCommand("select count(*) from userTable where userName= " + txtuserName.Text + ")", conn); SqlDataReader rdr = null; rdr = cmduserName.ExecuteReader(); conn.Open(); int count = 0; while (rdr.NextResult()) { count = rdr.GetInt32(1); } conn.Close(); if (count == 0) { return false; } else { return true; } protected void Button1_Click(object sender, EventArgs e) { if(isUserExists()) { Response.Write("Opps ! User already Exists"); } SqlCommand adapInsert = new SqlCommand("insert into userName values('" + txtuserName.Text + "')",conn); conn.Open(); adapInsert.ExecuteNonQuery(); conn.Close(); Response.Write("data inserted"); } is it write or not because I am not getting the output .please tell me any one where I have to change the code ThanksGeeta
View 3 Replies
View Related
