Cannot Truncate Table 'Database.dbo.Table' Because It Is Being Referenced By A FOREIGN KEY Constraint..
Aug 23, 2006
Here is my issue I am new to 2005 sql server, and am trying to take my old data which is exported to a txt file and import it to tables in sql. The older database is non relational, and I had made several exports for the way I want to build my tables. I built my packages fine and everything is working until I start building relationships. I remove my foreign key and the table with the primary key will get updated for the package again. I need to update the data daily into sql, and once in it will only be update from the package until the database is moved over.
It will run and update with a primary key until I add a foreign key to another database.
Here is my error when running the package when table 2 has a foreign key.
[Execute SQL Task] Error: Executing the query "TRUNCATE TABLE [consumer].[dbo].[Client] " failed with the following error: "Cannot truncate table 'consumer.dbo.Client' because it is being referenced by a FOREIGN KEY constraint.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
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Nov 11, 2015
Am working on sql database table shifting to new database tables. Am getting the following error while truncating the tables:-
Cannot truncate table 'orderItem' because it is being referenced by a FOREIGN KEY constraint.How can i remove all the items in the table if i found this error.
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Apr 4, 2006
I know that TRUNCATE TABLE can be used to reset the identity counter, but it can't be used on a table referenced by a foreign key. Anybody knows how to do that? Thanks.
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Sep 23, 2015
The parent table has the column OrderID which is the primary key. There is a unique non-clustered index in the same table with the same column and some included ones. A child table references the parent table on the OrderID column. Unfortunatelly, in the sys.foreign_keys table the index that has been used to acomplish the referential integrity is the unique non-clustered one instead of the primary key (which is the clustered index as well).
This is causing issues in some maintenance tasks where we need to disable all the indexes of the table apart from the clustered index. Disabling these indexes leeds to disabling the not properly configured foreign key as well. Maybe dropping the index create the constraint again and then recreate the index is a workarround but I wish to have something more elegant and future proof.
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Feb 21, 2007
I am testing Insert, Update etc. and messing up my database with "dirty" data. Is there a way to temporarily drop FOREIGN KEY constraints to truncate a table after testing without dropping the whole table and rebuilding it?
Newbie
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Nov 10, 2006
Hi
I am trying to update tables "Table A" & " TableB" with a new value for a particular column1. Now "TableA" contains a foreign key "FK1" defined on it and is referencing another table "Table B" containing the similar column "Column1"
Because of this constraint I was not able to update TableA and TableB. My question is
1) If i wanted to go ahead with this update, what are the possible ways?
2) If only solution is to drop the constraint. Then How do i know the definition for this particular Foreign key, i mean it may refer some columns in Table B. I wanted to know the complete definition of it so that i can rebuild the constraint after the update. Right now i can see only the constraint name when i use sp_help TableA. But how do i know the complete reference made by this foreign key.
Early reply is much appreciated
Thanks!
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Aug 10, 2006
Hi
We used to used Sql Server 2000 DTS to perform daily backups to remote servers very successfully but just cannot do the same with SSIS.
I set my Transfer Sql Transfer Objects Task to use the following settings:
CopyData = true
ObjectsTocopy = All Tables
As soon as it hits a table that has a foreign key, I get the following error:
"Truncate data failed for Table nnn"
I've tried setting DropObjectsFirst = True but this fails too with foreign key violations.
First of all, am I doing something obviously wrong? Is SSIS not smart enough to drop tables in the right order so that we don't get foreign key violations?
Am I totally barking up the wrong tree with this and can anyone suggest a better way of doing remote backups?
Kind regards
Ben
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Jan 11, 2008
Hi,A conflict error occured when I insert data using Formview.The INSERT statement conflicted with the FOREIGN KEY constraint "FK_personal_personal_category". The conflict occurred in database "E:INETPUBWWWROOTWEBSITEAPP_DATADATABASE.MDF", table "dbo.personal_category", column 'cat_id'.The statement has been terminated. ----------------------------------------------------Personal TablepID (primary)pNamecat_id (foreign key from personal_category, which has a relationship with it's primary key cat_id)pID | pName | cat_id1 | Scott | 112 | John | 122 | Mick | 13-----------------------------------------------------Personal_Category Tablecat_id (primary)cat_Descriptioncat_id | cat_description11 | Dean12 | Student13 | Professor-----------------------------------------------------I'm inserting a new data on Personal Table while choosing a category usinga DropdownList which is binded to another DataSource (LinqDataSource2).... <asp:FormView ID="FormView1" runat="server" DataKeyNames="tut_id" DataSourceID="LinqDataSource1" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" CellPadding="4" DefaultMode="Insert" ForeColor="Black" GridLines="Vertical"> <FooterStyle BackColor="#CCCC99" /> <RowStyle BackColor="#F7F7DE" /> <InsertItemTemplate> <asp:TextBox ID="pName" runat="server" Text='<%# Bind("pName") %>' /> <br /> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="LinqDataSource2" DataTextField="cat_desc" DataValueField="cat_id" DataSource='<%# Bind("tut_cat") %>' > </asp:DropDownList> </InsertItemTemplate> <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" /> <EditRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> </asp:FormView> <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="PersonalsDataContext" TableName="Personal" EnableInsert = "true"> </asp:LinqDataSource> <asp:LinqDataSource ID="LinqDataSource2" runat="server" ContextTypeName="PersonalCategoriesDataContext" TableName="Personal_categories" EnableInsert="false" > </asp:LinqDataSource>... Hope you could help.cheers,imperialx
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Aug 1, 2006
For some reason, I'm getting this error, even without the DBCC Check:
INSERT statement conflicted with COLUMN FOREIGN KEY SAME TABLE constraint 'Category_Category_FK1'. The conflict occurred in database 'mydb', table 'Category', column 'CategoryID'.
The statement has been terminated.
The very first insert fails...it was working fine before:
DELETE Category;
-- Now, insert the initial 'All' Root Record
INSERT INTO Category
(ParentCategoryID, [Name], [Description], DisplayOrder, DisplayInExplorer, Keywords, Active, CreateDate, CreateUserID, UpdateDate, UpdateUserID )
SELECT 1, CategoryName, '', 1, 1, '', 1, GETDATE(), 1, GETDATE(), 1 FROM CategoriesStaging WHERE CategoryName = 'All'
INSERT INTO Category
(ParentCategoryID, [Name], [Description], DisplayOrder, DisplayInExplorer, Keywords, Active, CreateDate, CreateUserID, UpdateDate, UpdateUserID )
SELECT 2, CategoryName, '', 1, 1, '', 1, GETDATE(), 1, GETDATE(), 1 FROM CategoriesStaging WHERE CategoryName = 'Store'
/* Finally, insert the rest and match on the Parent
Category Name based on the CategoryStaging table
*/
WHILE (@@ROWCOUNT <> 0)
BEGIN
INSERT INTO Category
(ParentCategoryID, [Name], [Description], DisplayOrder, DisplayInExplorer, Keywords, Active, CreateDate, CreateUserID, UpdateDate, UpdateUserID)
SELECT c.CategoryID, s.CategoryName, '', 1, 1, '', 1, GETDATE(), 1, GETDATE(), 1
FROM Category c INNER JOIN CategoriesStaging s ON c.[Name] = s.ParentCategoryName
WHERE NOT EXISTS (SELECT 1 FROM Category c WHERE s.[CategoryName] = c.[Name])
AND s.CategoryName <> 'All'
Here's the schema:
CREATE TABLE [dbo].[Category](
[CategoryID] [int] IDENTITY(1,1) NOT NULL,
[ParentCategoryID] [int] NULL,
[Name] [nvarchar](255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
CONSTRAINT [Category_PK] PRIMARY KEY CLUSTERED
(
[CategoryID] ASC
) ON [PRIMARY]
) ON [PRIMARY]
GO
USE [mydatabase]
GO
ALTER TABLE [dbo].[Category] WITH NOCHECK ADD CONSTRAINT [Category_Category_FK1] FOREIGN KEY([ParentCategoryID])
REFERENCES [dbo].[Category] ([CategoryID])
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Nov 5, 2007
Guys,
I have 600 tables in my database, out of which 40 tables are look up value tables. I want generate truncate scripts which truncates all the tables in order of Parent child relationship excluding lookup tables. Is there any way to do this apart from figuring out Parent Child relationship and then writing the truncate statements for each of the table.
For example
EmployeeDetail table references Employee table
DepartmentDetail table references Department table
Department table references Employee table
My truncate script should be
TRUNCATE TABLE DEPARTMENTDETAIL
TRUNCATE TABLE EMPLOYEEDETAIL
TRUNCATE TABLE DEPARTMENT
TRUNCATE TABLE EMPLOYEE
Is there any automated way to figure out parent and child tables and generate truncate script for the same.
Thanks
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Jan 3, 2008
I was working on my Lab Environment and i had a DB which was mirrored in synchronous mode without witness server. I truncated one of the tables in this DB and did a failover to the mirror server. The table got truncated in the mirror too. Though we know that truncate is a non logged operation how does this mechanism work? Can someone please expain me??? Thanks in advance. Your replies will be very much helpful to me.
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Mar 25, 2006
Hello,
I have two tables Person & Location where Location has a primary key LocationId and Person has a foreign key LocationId.
Sometime ago I used the Database Diagrams visual tool of SQL Server Management Studio Express to create the foreign key relationship between the two tables - i.e. "visually" (drawing a line between the PK & FK LocationId elements of both tables).
Time has passed and I recently noticed that, upon retrieving my saved diagram, the foreign key relationship had "fallen off" (i.e. the many-to-one line was no longer showing in the diagram).
After recreating the relationship (redrawing the line) I find that I get an error message when I try to save the diagram:
Post-Save Notifications
[!] Errors were encountered during the save process. Some database objects were not saved.
'Location' table saved successfully
'Person' table
- Unable to create relationship 'FK_Person_Location'.
The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_Person_Location". The conflict occurred in database "mydb", table "dbo.Location", column 'LocationId'.
When I go back to the object explorer and view the dependencies for the two tables, there is no dependency (between these two tables) revealed. When I try to create the foreign key constraint manually (T-SQL) it again says can't add the constraint. It comes up with an error as follows:
ALTER TABLE Person
ADD FOREIGN KEY (LocationId) REFERENCES Location (LocationId)
Msg 547, Level 16, State 0, Line 2
The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK__Person__LocationId__793DFFAF". The conflict occurred in database "mydb", table "dbo.Location", column 'LocationId'.
(Note: Each time I do this, the 8 hexadecimal character suffix changes.)
When I try to drop the foreign key:
alter table Person
drop constraint FK__Person__LocationId
it comes back with the error:
Msg 3728, Level 16, State 1, Line 2
'FK__Person__LocationId' is not a constraint.
Msg 3727, Level 16, State 0, Line 2
Could not drop constraint. See previous errors.
So it seems that there's some kind of goof up here. Can anybody shed light on this / tell me how to fix it?
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May 22, 2008
how can setup constraint for the column in table in database ??
and what will sould write in the (BLOCKED EXPRESSION field ??
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Sep 5, 2015
I am migrating data. I found a strange thing in the existing table, there is a column named workshopCaseID in a TruancyCase table ,The datatype for workshopCaseID is an int (null). it is a FK, there are some records are 0 values, but the fk referenced primary table only have 1-8 values, how are the 0 values get inserted there?
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May 18, 2015
I have a "case" table describing what type of social worker case and who performed work on the case. Four case workers are referenced within each case and all workers belong to the "worker" table. I am trying to present the case worker name on a detailsView rather then the much simpler task of showing the worker's index stored within the case. I can't seem to get the correlation names working.
SelectCommand="SELECT [ReportID], [RecCreated], tblVCaseType.Description AS cType, [IntakeDate], tblVCounty.Description AS County, [Abuse], [Neglect], [Dependency], [AfterHours],
[Screenout], tblVScreenOutcome.Description AS Outcome, [Closed], [ClosedDate], iWorker.[Worker Name], cWorker.[Worker Name] ,
tblVAssessmentType.Description AS aType, tblVTimeframe.Description AS tFrame, tblVDisposition.Description AS Dispo , tblVProgramXfer.Description AS Xfer,
[Code] ...
Getting only one worker name is easy. But, I need all four. I have tried many versions without success. The error from this version is repeated 4X:
The multi-part identifier "tblVWorker.ID" could not be bound.
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Jun 11, 2015
CREATE TABLE PRODUCT_SALES
(
Salesmanid BIGINT,
Productid BIGINT
)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,1)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,3)
SELECT * FROM PRODUCT_SALES
/* SalesmanID is reference key from Sales Master and ProductID is reference key from Product Master. How should i restrict user through DB with any constraint check, if user tries to enter
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2),
It should throw error , if possible user defined message would be more useful.
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Jan 13, 2008
Hello, I have an SQL problem that is hard to describe so here's an example scenario:
a) company has a personnel database, identifying each person in the company and their assigned role(s).
b) tblPersonnel has a row per person, key is 'PersonnelID'
c) tblRoles is a list of all the roles in the company (administrator, clerk, shipper, truck-driver, etc.), key is 'RoleID'
d) tblPersonnelRoles is a cross-reference of all the roles assigned to each person - in simple format of:
PersonnelID | RoleID
Given all the above, I need to have a select statement that produces one row per person, and list all the fields from tblPersonnel AS WELL AS identifies each role assigned to the person.
I'm no SQL guru .. is this even possible?
I know there are alternative solutions (e.g., to write code that for each Personnel does a lookup in Roles) but for one particular situation I need a single SQL statement, or even Stored Procedure.
Thanks in advance,
Rick Piovesan
Detaya Corp
Aurora, Ontario, Canada
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Nov 28, 2006
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.
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Jun 29, 2015
I need to delete records from a table (Table1) which has a foreign key column in a related table (Table2).
Table1 columns are: table1Id; Name. Table2 columns include Table2.table1Id which is the foreign key to Table1.
What is the syntax to delete records from Table1 using Table1.Name='some name' and remove any records in Table2 that have Table2.table1Id equal to Table1.table1Id?
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Jun 21, 2015
Previously same records exists in table having primary key and table having foreign key . we have faced 7 records were lost from primary key table but same record exists in foreign key table.
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Jul 20, 2005
I am trying to get some information to compare and contrast theTruncate Table function and the Drop Table function. I know thatusing Truncate Table is faster and saves the structure of the tablewhile the Drop Table will delete the table totally (data andstructure). My question is whether using one function over the otherwill use up more capacity on the server?Ed
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Feb 12, 2007
mahesh writes "HI,
I am new to sql server.
can anybody help me
I have a table named tblqualificationmaster.
can i know the foreignkeys and the table related to this
tblqualificationmaster having foeign keys using stored procedure."
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Aug 25, 2006
Hello all,
Simple question. I have two table with a foreign key in between.
Then if I want to truncate the tables, of course this is not possible because of foreign key. But with the following code, this should work:
EXEC sp_msforeachtable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'
GO
truncate table Table_1
truncate table Table_2
GO
EXEC sp_msforeachtable 'ALTER TABLE ? CHECK CONSTRAINT ALL'
GO
But I still have the error
Msg 4712, Level 16, State 1, Line 2
Cannot truncate table 'Table_2' because it is being referenced by a FOREIGN KEY constraint.
What is wrong ?
You will find below the code for the creation of my two tables
Thanks for your help
CREATE TABLE [dbo].[Table_1](
[ID] [int] NOT NULL,
[foreignId] [int] NOT NULL,
CONSTRAINT [PK_Table_1] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Table_2](
[Id] [int] NOT NULL,
CONSTRAINT [PK_Table_2] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Table_1] WITH NOCHECK ADD CONSTRAINT [FK_Table_1_Table_2] FOREIGN KEY([foreignId])
REFERENCES [dbo].[Table_2] ([Id])
GO
ALTER TABLE [dbo].[Table_1] CHECK CONSTRAINT [FK_Table_1_Table_2]
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Feb 22, 2008
I've just found out about the concept that a table should only be references by foreign keys a maximum of 253 times throughout the database. I was hoping someone could give me a better idea of the dangers of disregarding this recommendation.
In our database, we have a Users table, which contains all of the users of a given system. In nearly every other table in our database, we have a field to indicate which user created the record. This is a reference back to the Users table. But as the number of tables has grown, we've surpassed that 253 limit. All I can tell, practically, is that I can no longer delete from the Users table. The query will fail, telling me the query optimizer ran out of memory, and that I should simplify my query.
The Users table is the only table that even comes close to this number of foreign key references. I don't even mind being unable to delete from the table. I'm mostly wondering if there are other problems with my design that will cause issues?
Is there a better way to keep track of who created a record in the database? Is it bad design to reference my Users table in so many places?
Thanks,
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Jul 4, 2007
i did a Stored Procedure to truncate a table. it contains lots of crap from testing the site. just a simple 1 ALTER PROCEDURE dbo.TruncateUploads
AS
TRUNCATE TABLE Uploads but it says "Cannot truncate table 'Uploads' because it is being referenced by a FOREIGN KEY constraint." then i make NULL all foreign keys and try still cannot. then i did it manually deleting all records then can! but why can't i truncate it? isn't it the same as removing all values plus having the primary keys to start from 0?
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Oct 27, 2007
How can i TRUNCATE my table (removes rows that were produced at testing), so that in the actual running the automated IDNumber for my table start with 1.
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Nov 1, 2000
hi, I have two tables members table and orders table.
I have 2 records in members table and zero records in order table.
When I try to truncate members table I get an error message.
cannot truncate table members,because it is being referenced by a FOREIGN KEY constraint.
this what blows my head, There is no records in orders table. so why would the constraint enforced when there is no data in the order table. I created same table in access and I was able to delete a member from the members table. any comments.
thanks
Ahmed
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Feb 1, 2005
I have several very large tables and sometimes I need to clean them.
It's known that TRUNCATE TABLE works much faster than DELETE, but impossible to use TRUNCATE TABLE on a table referenced by a FOREIGN KEY constraint... Is it possible temporary disable (not delete) constraints and after complition of TRUNCATE enable them ?
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Feb 10, 2005
Hi,
(From Bol)
"You Cannot Use Truncate Table On A Table Referenced By A Foreign Key
Constraint;"
1) States
Statecode TinyintPrimary Key
Statename Varchar(25)
2) Rivers
RivercodeSmallint Primary Key
RivernameVarchar(40)
3) Riverinstates
StatecodeTinyint,
RivercodeSmallint,
Constraint Pkriverinstates Primary Key(Statecode,Rivercode),
Constraint Fkriverinstates
Foreign Key (Statecode) References States(Statecode),
Foreign Key (Rivercode) References Rivers(Rivercode)
after removing all rows from RiverInStates Table using TRUNCATE and the command completed successfully.
when i tried to remove all rows from Rivers table , i got the following error.
"Server: Msg 4712, Level 16, State 1, Line 76
Cannot truncate table 'rivers' because it is being referenced by a FOREIGN
KEY constraint."
i thought the error may be due to the "Fkriverinstates" FOREIGN KEY CONSTRAINT. so i DROPped the constraint with
ALTER TABLE RiverinStates DROP CONSTRAINT Fkriverinstates
even after DROPping the constraint, im getting the same error
can any one point out where the problem is?
thanks in advance
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May 18, 2004
what is the best way to truncate/delete records from a table at a certain time of the day...... i'm sure this is a simple ?, but i'm still learning sql.
thanks,
eddie
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Jan 18, 2007
any idea why this is not wroking ?
------------------------------
declare
@TableName varchar
DECLARE
EmptyTables CURSOR FOR
Select Table_Name From Information_Schema.Tables
Where Table_Type = 'Base Table' Order By Table_Type
open EmptyTables
FETCH NEXT FROM
EmptyTables
into
@TableName
WHILE @@FETCH_STATUS = 0
BEGIN
truncate table @TableName
FETCH NEXT FROM
EmptyTables
into
@TableName
END
close EmptyTables
deallocate EmptyTables
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Nov 16, 2006
I have a database of 25 GB. I truncated a table which holds around 5 GB of data.
Even after truncation, I see my database size as 25 GB...
Should I run a shrink database after the truncation?
Thanks
Santhosh
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Dec 14, 2007
I like to define my procedure parameter type to match a referenced table colum type,
similar to PL/SQL "table.column%type" notation.
That way, when the table column is changes, I would not have to change my stored proc.
Any suggestion?
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