Unsorted Primary Key Column In SQL Server Database
Oct 25, 2007
Update: Changed original post as I figured it was not the problem I stated.
Hi all,
Heres the problem. I have a table in SQL Server with two fields, PartSubCategory and PartCatID. PartSubCategory is the primary key. When I import an excel sheet with identical columns into this table, the primary key column in the table gets sorted automatically (alphabetically). I don't want this column sorted but to import the rows from excel in the order as they were. Is this some indexing issue? Is there a fix?
I have some relatively simple SQL that acts differently between SQL Server 2000 and 2005. Although it is easy to fix I'd like to know if this difference is expected (documented) or a bug, and if there is perhaps a setting/switch I can use to avoid a code review of hundreds of stored procs to look for similar scenarios. Executed the following script in SQL Server 2005 –CREATE TABLE #Floats(FloatID INT IDENTITY,FloatNumber FLOAT NOT NULL)DECLARE @sngCounter floatSET @sngCounter = 20WHILE @sngCounter >= 0BEGININSERT INTO #Floats ( FloatNumber ) VALUES( @sngCounter )SET @sngCounter = @sngCounter - 1ENDSELECT * FROM (SELECT TOP 100 PERCENT * FROM #Floats ORDER BY FloatNumber) AS FloatNumbersDROP TABLE #FloatsGOProduces the following resultset –FloatID FloatNumber----------- -----------1 202 193 184 175 166 157 148 139 1210 1111 1012 913 814 715 616 517 418 319 220 121 0In SQL Server 2000 resultset is this –FloatID FloatNumber----------- --------21 0.020 1.019 2.018 3.017 4.016 5.015 6.014 7.013 8.012 9.011 10.010 11.09 12.08 13.07 14.06 15.05 16.04 17.03 18.02 19.01 20.0
I have a varchar column in a table, which is an unique key column. Now when I design this table should I use this column as a primary key or should I add one more Integer column as a primary key column for the performance?
One more point is, when ever I do a search on this table I will search based on that unique varchar column values only, so even then if I add new integer column just for Primary key I will not use this column for searching values.
With these information, can some body help me in deciding this?
We have a database where many tables have a field that has to be lengthened. In some cases this is a primary key or part of a primary key. The table in question is:-
/****** Object: Table [dbo].[DTb_HWSQueueMonthEnd] Script Date: 09/25/2014 14:05:09 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[DTb_HWSQueueMonthEnd](
[Code] ....
The script I am using is
DECLARE@Column varchar(100)--The name of the column to change DECLARE@size varchar(5)--The new size of the column DECLARE @TSQL varchar(255)--Contains the code to be executed DECLARE @Object varchar(50)--Holds the name of the table DECLARE @dropc varchar(255)-- Drop constraint script
[Code] ....
When I the the script I get the error message Could not create constraint. See previous errors.
Looking at the strings I build
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] DROP CONSTRAINT PK_DTb_HWSQueueMonthEnd ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] Alter Column [Patient System Number] varchar(10) ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] ADD CONSTRAINT PK_DTb_HWSQueueMonthEnd PRIMARY KEY NONCLUSTERED ([Patient System Number] ASC,[Episode Number] ASC,[CensusDate] ASC) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
They all seem fine except the last one which returns the error
Msg 8111, Level 16, State 1, Line 1 Cannot define PRIMARY KEY constraint on nullable column in table 'DTb_HWSQueueMonthEnd'. Msg 1750, Level 16, State 0, Line 1 Could not create constraint. See previous errors.
None of the fields I try to create the key on are nullable.
I need some clarification about adding file in to mirrored dataabse in primary server without downtime and breaking the mirror server.
In our environment we are using monutdisks in both the servers. in primary for ex we have F drive for data files under mount disk 3 in mirror server also we have same drive but in mount drive2.
As per my knowledge if it is same drives we can add the ndf files in the primary that will reflect on mirror. but in current situation i am confusing about mount points with different names.
Hi Everone, I need help on how to produce a SQL Server Database Primary Data File, i have read the Visual C# 2006 book by Deitel and Deitel unfortunately the book does not say how to produce the forementioned data file. The software that i currently have to help me produce this data file is Visual C#, J#, Web Development, SQL Server 2005 and Office 2007.
I have a good understanding of databases from studying SQL and Oracle but i am not sure which is the best software to use to produce the Primary Data File, ideally i would like to use Access from my Office 2007 package.
Many thanks for your help in resolving this problem.
Hello guys My server crashed but luckily I was not able to get back my files with help of recovery software. Now, all I have from the database are just sql server database primary data .mdf and sql server databaseTransaction Log Files .ldf. I need to restore these data back to sql server.
Please could someone tell me how to restore these two file types back to my sql sever 2007 database? Thanks netboy
To do this successfully do I need to backup the Service master, Database master, and database itself from the the Source server, then restore all three of them on the destination server?
(I'm concerned that restoring the source Service Master key to a new target server with an existing sql 2005 install will screw things up big time.)
Hello, this SQL query gets all columns of a table:
SELECT syscolumns.name AS [Fields in Items Database], syscolumns.type, syscolumns.length, syscolumns.isnullable FROM sysobjects INNER JOIN syscolumns ON sysobjects.id = syscolumns.id WHERE sysobjects.name = 'IssueTracker_IssueAttachments' ORDER BY syscolumns.colid
I would like to know, is there a way to get a column saying who is the primary key in the table ? I am reading columns for tables and processing them, but I would like to know who is the primary key, is that possible ?
I checked column from xsd file which created from DataBase. And before installing my application I will check any column in destination base whether have complete column or not.
And if there is any column which is not wanted column(not same as xsd structure) I will delete it by creating sql command as follow "ALTER TABLE tableName DROP COLUMN column1, column2, ......" and Execute it by program initialization.
So I need delete it by run-time
However some column may be Primary Key with any reason
That's why I can't delete them by simple command
I expect to delete them by specific column instead of specific constraint name which is not sure name.
Hi everyone,How do I set a primary key on an existing column using SQL statements? I have column persID of type int in table employees. How do I correctly apply the ALTER command to change persID type to INT IDENTITY(1,1) NOT NULL? Thanks in advance
Can anyone explain the Difference between Primary Key and Identity Column in MSSQL Server 6.5. Please give me any example if possible. Thanks for Help!!!!
Hello,I have a table 'customers', with 2 records:SELECT * FROM customers;customerID | customerName------------------+-------------------------myFriend | myFriend's Nametest | testing user(2 rows)but when I'm asking about customerID column, I get the answer:SELECT customerID FROM customers;ERROR: column "customerid" does not existWhat happens? I'm using PostgreSQL 8.1.3
Hi allWould there be a easy way to find the column name(s) which constitutea Primary constraint for a table through navigating the systemcatalogs.I found that the PK Constraint object in syscontraints is showing thecolid = 0.TIANorman
Hi I have a set of excel files that i need to export to sql2005 using ssis. Now the issue is that i have no idea about he data ie it may have duplication in the primary key column. If i export it as it is to sql server, it will cause me problems. Is there any way i can filter out the rows which have duplication in the primary key column? Umer
Hello -- Following normal practice, I have an autoincrementing identity column designated as primary key in my table. I have two other columns that should also contain unique values per record, but the Identity option is greyed out (in Management Studio) for all columns other than the primary key. I'm enforcing this programmatically (in my C# code) at this point, but I'd like to back that up with a constraint in the database itself. Any help is appreciated. Eric
I have a situation in which i have to get the last value stored in the Primary Key for all the tables. Based on this value i have to update another table which stores the Table names and the last Key value for the table. The values in this table are not correct therefore i have to update it now. I was trying to write a cursor for this but the only problem is i can't get to know how to get the column name on which the primary key is defined for all the tables, thru code.
I would appreciate if someone could help me out with this.
Now my problem is that I want to set a primary key constraint on actorID but it doesn't let me because it the NULL check mark is automatically checked and I cannot check it off ... and I can't set a primary key on something which is allowed to be NULL....
I don't understand why 'actorName' column which is also calculated doesn't have that default NULL checked and locked ....
I am trying to recreate a primary key that I dropped in a table....
I'm using a statement like
ALTER TABLE temp WITH NOCHECK add CONSTRAINT PK__tempkey PRIMARY KEY CLUSTERED
(
num, store )
But apparently the "store" column was created without a "not null" and it let it create the PK during the table creation but now it won't let me add the PK with that nullable column..
Does anyone know how to get it to use that column to create a primary key after the initial table creation?
Here is the error i get
Cannot define PRIMARY KEY constraint on nullable column in table
We are developing a batabase which is meant for financial domain,so it will import data from different source system.. and data from our data base will be further passed to other applications.
In contex of our system integration with other data sources ,whether is it a good idea to have a auto integer primary key a or to implement some logic to generate primary key?
Can some one guide us to some pratical data base design case studies?or some best practices.?
I want to add new primary key into existing table which already has a primary key. But,I do not want to remove the old primary key, since there are many records and the old primary key also have relationship with other table
When I am using this query:
alter table hem154 add indexNO uniqueidentifier default newid()
alter table hem154 add CONSTRAINT pk_hem154_indexNo PRIMARY KEY (PK_indexNO) go
Note: Hem154 ~ Table name indexNo ~ Column Name
I get this runtime error:
Msg 1779, Level 16, State 0, Line 1 Table 'hem154' already has a primary key defined on it. Msg 1750, Level 16, State 0, Line 1
This is a fairly simple question, but what is the easiest way to:create a new numbered column (where value is simply the row number) inan existing table and setting it as a primary key?
