SQL Server :: Primary Key Constraint Without Double Input?
Dec 6, 2010
i have a bizar situation, i have a SSIS package which imports records from a flatfile.First i get rid of all the double records, so I keep only unique records before I put them into the desired table.I have put a dataviewer on the flow and notice that there are no duplicate records, and though the SSIS package fails with a violoation of a promary key constraint.Hs anyone seen this before? It is really strange.
How can I write regular expression in C# to validate that the input does not contain double spaces? I am using Regular Expression Validation. However I do not know what is the Validation Expression to get the result.
In the database one number like a 91-9685748596 and, 2nd number like 9122-9685748596 and another one is 9685748596 .when we are try to formate it using substring function it all are may be9685748596,9685748596,9685748596.Mobile number is assigned as a primary key.so its showing error "Primary key violation".We can not the remove primary key also and there are 50 lack data in our database.
I want to write a Regex in DataAnnotations that can unmatch a input string containing not paired double quote " ie. check if zero or a paired double quote allowed in a input string.
matched case: abcde "abcde" abc"d"e
unmatched case: "abc"de" "abcde abc"de abcde"
MY EXISTING CODE FYR:
using System.ComponentModel.DataAnnotations; using Microsoft.Web.DynamicData; namespace EDMModel { [MetadataType(typeof(DETAIL_MetaData)), ScaffoldTable(true)] public partial class DETAIL{} public class DETAIL_MetaData { [Required, RegularExpression(@"[^~`!@#%&()={}|:;'<>,./+?*^$]*", ErrorMessage = "Unsupported Character detected"), StringLength(20), Display(Order = 21)] public object NAME1 { get; set; }
I was using RangeValidator to validate user input on client side for double values.One of my user said that when he enters 5E-10, my range validator does not understand that number as a valid double.
I have a table with three fields, User, City and Country, where exactly one of the fields must be non-NULL at all times. Can I use an SQL constraint for this or should I rethink what I'm doing?
The scenario is that my database should contain documents that can be attached to users, cities or countries. So a row in this table contains exactly one document for either a user, a city or a country. However, one should be able to search for all documents as well, regardless of what entity it has been "attached" to.
The reason I'm not using three different tables instead is that I want to avoid having to JOIN the three tables when searching for documents in all of the three places. I'm imagining that the kind of denormalization I'm attempting to use here will improve performance.
I'm trying to remove a user from the aspnet_Users table.
[Code]....
I received the following error during my try-catch test:
System.Data.SqlClient.SqlException was caught Message=The DELETE statement conflicted with the REFERENCE constraint "FK_lusHmoob_aspnet_Users". The conflict occurred in database "laujtsov", table
"laujAdmin.lusHmoob", column 'whoInsert'. The statement has been terminated. Source=.Net SqlClient Data Provider ErrorCode=-2146232060
The UPDATE statement conflicted with the FOREIGN KEY constraint "FK__Software__Packag__5165187F". The conflict occurred in database "StudentDB", table "dbo.Package", column 'PackageID'. The statement has been terminated.
STUDENT PARENT student_id (PK) parent_id (PK) student_parent (FK) parent_status (the value is either ACTIVE OR INACTIVE)
- parent_id is refer by STUDENT table as a foreign key
- now i want to inactive the status for parent
- i want my system pop out a message something like "The parent you want to inactive is refer by a student, inactive is not allow"
- is it any constraint in SQL Server 2005 to help me check whether parent it is refer by student table? The concept i want to use is something like delete constraint in SQL Server 2005 mean it is not allow to delete a person who is refer by a student in STUDENT table.
I'd really like to know how to do the same thing in my code as going into sql server management studio, clicking on the design of a table, and then from the file menu scrolling to the relationships and disabling the foreign key constraint by selecting no to the 'enforce foreign key constraint'.
Is it possible to allow repeated nulls on a column with a unique constraint? This column will won't always be populated with data upon insert, a condition must be met before the value is update. Once updated, it needs to be unique. Do I need to assign a temporary, random value or
When I get an exception message like this I want an Exception Class name to compare.Not wantto compare a string to match with substring.when I get an unique constraint error like this below how can I control if error exception type is exactly sqlserver unique constraint error ?:
catch (Exception ex) { if (ex.class==SQLUniqueException) blahblah(); };
I have a SQL Server 2000 table with 7 columns and would like to add a constraint that prevents a row being added with the same value for both Col2 and Col3.
So, for example, if Col2 = 205 and Col3 = 5, then the constraint should prevent inserting another row with the values for Col2 = 205 and Col3 = 5.
The following is an example of what I would like to prevent:
I dont have primary key for Compaign Table CompaignId is Identity column. Now i want to use CompaignId in Employee Table because based on compaign user will retrieve employee data in Front end. Again Employee table doesn't have primary key. I am uploading excel file data to databse but in excel file there is no empNo so i cannot use primaryKey i have EmpName in excel file. How to solve this issue. How to use master table if possible create table structure for my requirements.
I am new to sql. I got this task to design a table in sql. It has for columns user_ID(PK, FK1) , WebSite_ID (PK, FK2), Create_Dt, Update_Dt How do I create PK and Fk1 and PK FK2 in sql server 2008 R2