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What kind of sql tricks you use to enter data into two tables with a circular reference in between.
Employees EmployeeID <PK> DepartmentID <FK> NOT NULL Departments DepartmentID <PK> EmployeeID <FK> NOT NULL
The employee belongs...
Started by Tom on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
Refactor the schema by removing constraints for the insert to happen... .
See example below)
[EDIT]
A: In Microsoft SQL Server, you can't defer foreign key constraints likeYes, in this instance you will have to disable a foreign key.
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I have a table which has one column as a foreign key joining to another table. It's a cricket question where I have a table called Fixtures and another called Inning.
Inning table has a FixtureId column relates to the Fixture table.
I would expect that...
Started by Steve on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
( Source )
Example:
CREATE TABLE a ( id INT AUTO_INCREMENT PRIMARY KEY ) ENGINE=INNODB; CREATE TABLE b ( id INT AUTO_INCREMENT PRIMARY KEY, a_id INT, FOREIGN KEY (a_id) REFERENCES....
Engines will simply ignore foreign key constraints.
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The Server Explorer built into Visual Studio is a nice way to connect to your database, view existing data, and edit data. Very useful for entering sample data into a database for testing and development purposes.
However, what if you have a "text" column...
Started by Kevin Dietz on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
For example:
CREATE TABLE TableA ( id INT IDENTITY PRIMARY KEY.
However, you can enter multiple line data by creating a simple INSERT statement.
Think the editor supports multi-line input or editing.
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I have a simple country table using a identity column for the primary key. There are also columns used to contain the 2 letter and 3 letter ISO-3166 Country Codes. Each of these columns is defined as a unique index.
On Inserts/Updates I want to simply...
Started by MikeSullivan on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
If a duplicate key does end up of functionality in T-....
Please enter a unique 3 letter ISO-3166 value."); } else { MessageBox.Show (and disabling the submission if duplicate keys are not allowed).
entered is already in use.
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The title might be a little misleading because I didn't really know what to call it. Here is my dbml and I am using the repository pattern to communicate between my application layer and my SQL layer. As you can see, I have four tables. Three of them ...
Started by Mohit Deshpande on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
, Constraint ....
) Create Table dbo.ContactAddresses ( Id int not null Primary Key Clustered , ContactId int not null , Street nvarchar(max) null , City nvarchar(40) null ...
Not null Primary Key Clustered , FirstName nvarchar(25) null ...
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Hi ,
just a quick noob question.
Why would you use a primary key in a database ?
Started by Oliver Bayes-Shelton on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
The Candidate / Primary key page on wikipedia, for instance, that states (quoting) :
In the relational model of databases, a candidate key of a relation is a minimal superkey for that relation; that is, a set it as a foreign key ....
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I'm trying to use the Relationships dialog in SQL 2008 to add a new foreign key to a table field. When I go to add one, I am not able to change and specify the Foreign Key Base table or any others in the "Tables and Columns Specification" area...they'...
Answer Snippets (Read the full thread at stackoverflow):
Specification" area has a wee button where you choose the tables and columns: you can't enter stuff ALTER TABLE dbo.MyTable ADD CONSTRAINT FK1_MyTable FOREIGN KEY(myNewColum) REFERENCES dbo.myRefTable(ID.
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I have a SQL Server Integration Services project which queries a SQL Server 2005 database using an OLE DB Source with SQL Command as data access mode.
I'm trying to parametrize my SQL query but the syntax is not @PARAM and when I try to use ? and click...
Started by AJM on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
As the error message suggests though, you can make the whole SQL command come, or a dynamic sql statment.
How did you set up your execute sql task component? I have just on my part).
And enter in the User::Qry1 variable.
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There's a dropdown displaying 1-10 from where the user selects the number of textboxes he wants - if he chooses unlimited, it shows him a textbox wherein he enters the exact number of textboxes he'd like. if he enters 40, it shows him 40 textboxes which...
Started by fusion on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
TABLE Some_Entity ( some_entity_id INT NOT NULL, CONSTRAINT PK_Some_Entity PRIMARY KEY CLUSTERED (some NOT NULL, comments VARCHAR(1000) NOT NULL, CONSTRAINT PK_Some_Entity_Comments PRIMARY KEY CLUSTERED (some_entity_id, comment_number),....
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Intro note: I'm hoping a library or routine exists to do this, but I haven't been able to find anything like this. I'm really looking for direction and advice on where to start...
Here is the situation: I have a block of SQL commands coming as plain text...
Started by Justin on
, 9 posts
by 9 people.
Answer Snippets (Read the full thread at stackoverflow):
You need ....
Http the correct end of the statement.
I have used it successfully for parsing sql in the past.
Maybe try this library.
This way you can easily break the single string into separate SQL statements.
Each statement with a ";".
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