Point Of Information - Checking For Existence Of A Table In Another Database...
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 ;) )
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 )
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.
I have a situation where our stored procedure inserts records from table_1 to table_2 when they don't already exist (uses the EXIST statement) on that table. If table_1 contains multiple records that are the same, it appears after the 1st record has been inserted, it does not recognize it as being there when it checks the existence when attempting to insert record 2.
Here's an example of the script:
insert into table_2 (col1,col2,col3) select col1,col2,col3 from table_1 t1 where not exists (select '1' from table_2 t2 where t1.col1 = t2.col1 and t1.col2 = t2.col2 and t1.col3 = t2.col3)
Data from Table_1 -- Assume that table_2 does not contain these records
col1 col2 col3 AA 11 A1 AA 11 A1 BB 22 B2
All 3 records would be inserted to table_2 in this example.
OK. Here's my situation. I check for the existence of a dummy .txt file using a script. I send an e-mail if it does not exist and exit package. The .txt file only exists if another .xls file is present which I import. However, during the validation phase of the package, the package fails because the .xls file does not exist. Is there a way to bypass the validation step? The only solution I came up with is to have a two-step job. The first runs the file check step and sends the e-mail. The second attemps to run the package and fails. Not a very graceful exit.
Not played with SQL for a while and am a bit rusty so please excuse me if I sound like a demented idiot! )
It's for a data migration from something wierd to SQL, I just need to be able to advise whether a table is worth migrating or someone should manually enter the data (i.e. if only six random fields are populated in a table then get a secretary to enter it).
I was hoping someone might have already done this and have a query I can edit?!
As far as I can make out the query needs to loop through every table, loop through every row, check each field for an existance of data and output something useful.
I've stared at this for about 3 hours now and tried several different things and none work.....and it's doing my nut! (
I have a parent package that calls a child package, when I run the parent package the child package picks up a variable value from the parent in a script task and runs fine, the problem I'm facing is when I run just the child package, the script task fails because it doesn't know about the parent variable. The dilemma I'm facing is in my child script task, if I add the parent variable to the ReadOnlyVariables list then the task fails because the parent variable doesn't exist when I just run the child. If I don't add the parent variable to the ReadOnlyVariabls list then if I try to use it then the task fails saying that the variable doesn't exist in the variables collection.
Is there a way to check for the existence of the parent variable, so when I just run the child package I don't get an error and I don't have to change my task every time I choose to run the child package only vs running the parent/child?
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 */
I am getting an error between the IF THEN Else statement. The copy works after the THEN! I need some help!
Ernie
I have two tables with script in a view. 1. newusers 2. blacklist I want to compare that "PresentEmail, RemoteComputer,Email" thats in newuser table is not in blacklists, and if this is true, then copy from newuser (the record not on blacklist) to blacklist using a where statement for second condition.
IF (NOT EXISTS (SELECT * FROM newusers AS d WHERE ISNULL(PresentEmail, 'NULL') IS BadEmail))
THEN
Insert into blacklist (BadNewEmail, BadIpAddress, BadEmail)
First off, I appreciate the time that those of you reading and responding to this request are offering. My quesiton is a theoretical and hopefully simple one, and yet I have been unable to find an answer to it on other searches or sources.
Here's the situation. I am working with SQL Server 2005 on a Windows Server 2003 machine. I have a series of databases, all of which are in Full recovery mode, using a backup device for the full database backups and a separate device for the log backups. The full backups are run every four days during non-business hours. The log backups are run every half hour.
Last week, one of my coworkers found that some rarely-used data was unavailable, and wanted to restore a database to a point in time where the data was available. He told me that point in time was some time back in November.
To accomplish this, I restored the database (in a separate database, as to not overwrite my production database) using the Point in Time Recovery option. I selected November from the "To a point in time" window (I should note that this window is always grey, never white like most active windows, it seems), and the full database backup and the subsequent logs all became available in the "Select the backup sets to restore" window.
I then tried a bevy of different options from the "Options" screen. However, every restore succeeds (ie: it doesn't error out), but seems to be bringing the database back to a current point in time. It's never actually going back to the point in time I specify.
My questions are as follows:
a) Is it possible to do a point in time recovery to a point in time BEFORE the last full database backup?
b) If so, what options would you recommend I use? (ie: "Overwrite the existing database", restore with recovery, etc etc).
I again appreciate any and all advice I receive, and I look forward to hearing from anyone and everyone on this topic. Thank you.
hi i have over 200 tables with all same column and data type locate all over the server(20)different database. so i have table call Tname to stored all the link like (databasename.dbo.tablename) so my job will call the Tname table to use cursor to insert records. but the problem is there's one or more table's column name K datatype has been modify by someone else. so is it cause the job fail. if there a way or SQL statment that i can use Table Tname to see which one is missing column name K? and is there a way i can print out all the datatype and len for all the table column k? please help thanks
I would like to know how to (if it is at all possible) in SQL (or even ADO) to retrieve all the data concerning database X's
a) Tables b) Tables column names c) Tables column's data types
I don't want to use the doa.tabledefs object.. .i would prefer to do it in SQL, but using ADO objects (since I am developing stuff in VB) would be ok too.
Please Help.. i have been going crazy trying to find anything useful.. email me back please!
I'm using Sql Server 2012 Enterprise and have a database with over 400 tables. I am looking at one diagram which contains about 20 (or so) tables and their relationships. When I right-click on a relationship line I only see information about which tables are connected on that line but not on which fields. Can I get that information from the Diagram or can I only get that from the sys tables?
Hi, I am working on inserting information into a DB and then retrieving the ID created for that Data to use elsewhere in my code. I have the code below but I do not know how to get toOutput parameter. Can anyone please help?
AS INSERT INTO PRODUCTION (DATEOUT,DATEREQUIRED, PREPAREDBY, COMMENTID, TOTALQUANTITY, VENDORID, WPO, TCAPONUMBER, APPROVEDBY) VALUES( @DATEOUT, @DATEREQUIRED, @PREPAREDBY, @COMMENTID, @TOTALQUANTITY, @VENDORID, @WPO, @TCAPONUMBER, @APPROVEDBY) SET @Identity = SCOPE_IDENTITY()
'collect all the information from the form and then apply all and then update 'Get a reference to the Production table. Dim dtProduction As DataTable = DS.Tables("Production") Dim dtLineItem As DataTable = DS.Tables("LineItems") ' Create the SqlCommand to execute the stored procedure. Production.InsertCommand = New SqlCommand("dbo.InsertProduction", connection) Production.InsertCommand.CommandType = CommandType.StoredProcedure ' Add the parameter for the CategoryName. Specifying the ' ParameterDirection for an input parameter is not required. 'Production.InsertCommand.Parameters.Add("@CategoryName", SqlDbType.NVarChar, 15, "CategoryName") Production.InsertCommand.Parameters.Add("@DATEOUT", SqlDbType.DateTime, 8, "CategoryName") Production.InsertCommand.Parameters.Add("@DATEREQUIRED", SqlDbType.DateTime, 8, "CategoryName") Production.InsertCommand.Parameters.Add("@PREPAREDBY", SqlDbType.VarChar, 50, "CategoryName") Production.InsertCommand.Parameters.Add("@COMMENTID", SqlDbType.Int, 4, "CategoryName") Production.InsertCommand.Parameters.Add("@TOTALQUANTITY", SqlDbType.Int, 4, "CategoryName") Production.InsertCommand.Parameters.Add("@VENDORID", SqlDbType.Int, 4, "CategoryName") Production.InsertCommand.Parameters.Add("@WPO", SqlDbType.VarChar, 50, "CategoryName") Production.InsertCommand.Parameters.Add("@TCAPONUMBER", SqlDbType.Int, 4, "CategoryName") Production.InsertCommand.Parameters.Add("@APPROVEDBY", SqlDbType.VarChar, 50, "CategoryName") ' Add the SqlParameter to retrieve the new identity value. ' Specify the ParameterDirection as Output. Dim parameter As SqlParameter = Production.InsertCommand.Parameters.Add("@Identity", SqlDbType.Int, 0, "ProductionID") parameter.Direction = ParameterDirection.Output ' Create a new row with the same schema. Dim dr As DataRow = dtProduction.NewRow() 'you need the ID from this to insert into the Production DB ' Set the value of all the columns. dr("DateOut") = CDate(DateTimePicker1.Text) dr("DateRequired") = CDate(DateTimePicker2.Text) dr("VendorID") = CInt(vendorbox.SelectedValue) dr("HomeAddress") = txtApproved.Text.ToString dr("ApprovedBy") = txtPrepared.Text.ToString dr("TCAPO") = CInt(txtTCAPO.Text.Trim) dr("CommentID") = CommentID dr("TotalCost") = CDec(txtTotals.Text) dr("TotalQuantity") = CInt(txtQtyTotal.Text) ' Add to the Rows collection or table . dtProduction.Rows.Add(dr) 'Update the Production Table and then retrieve the ID created in this case Production.Update(dtProduction)
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
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.
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
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'')
I am having a table called as status ,in that table one field is there i.e. currentstatus. the rows which are having currentstatus as "ticket closed",i want to move those rows into other table called repository which is having same table structure as status table. I can do programatically. but is there any way for every 3 months system has to check and do this action means moving to repository table automatically?
I need to check one table while updating another table suppose i need to check table1's value is whether less then 0 or not without if condition can i check it with update query? thank you
I want to make a query, stored procedure, or whatever which will only display the primary key where there does no exist a foreign key in linked table.For example. If I had two tables with a one to many relationship.A [Computer] has one or more [Hard Drives]. I want to select only those computers which do not have a Hard Drive(s) associated with them. That is, show all computers where the Computer_ID field in the [Hard Drives] table does not exist. This seems simple but I'm drawing a blank here.
Now the question is that an organization and a person both need to access the address table.
Is it better to have a PersonsAddress table and an OrganizationsAddress table, or is it better to have some sort of AddressAccess table that the persons and the organizations tables both relate to and have some sort of type field in there that specifies Org or Person?
how i can check for duplicate entries for example if a serial number has already been inputted and a user tries to input the same serial number.. how can i get a trigger or some sort to check for duplicates and then prompt that the number has already been entered.
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
I'am doing functionality test on DTS packages and saving my DTS packages to meta data services instead of saving them as local packages. We would like to see what information would be provided by saving them this way, but when we try to open the meta data browser (the 3rd icon under DTS) we get the following error:
An error occurred while trying to access the database information. The msdb database could not be opened.
I actually work in an organisation and we have to find a solution about the data consistancy in the database. our partners use to send details to the organisation and inserted directly in the database, so we want to create a new database as a buffer database to insert informations from the partners then make an update to the main database. is there a better solution instead of that?
I am very VERY new to using Visual Studios... I have a SQL database with a table in it "table1" inside the table there is a field "ID" I have made a new website project thing, and I have a textbox and a submit button What I want to do is make a function that will check if what the user has typed into ID is valid, e.g. it exists in the database Can anyone point me in the right direction about how I could do this? Thanks very much
