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18 wrz 2008 · Your syntax for dropping the FK doesn't need the words "foreign key". This is the syntax for MySQL, not SQL Server. You can replace it with the word "constraint".
You can delete a foreign key constraint in SQL Server by using SQL Server Management Studio or Transact-SQL. Deleting a foreign key constraint removes the requirement to enforce referential integrity.
The DROP CONSTRAINT command is used to delete a UNIQUE, PRIMARY KEY, FOREIGN KEY, or CHECK constraint. DROP a UNIQUE Constraint. To drop a UNIQUE constraint, use the following SQL: SQL Server / Oracle / MS Access: ALTER TABLE Persons DROP CONSTRAINT UC_Person; MySQL: ALTER TABLE Persons DROP INDEX UC_Person; DROP a PRIMARY KEY Constraint.
The syntax to drop a foreign key in SQL Server (Transact-SQL) is: ALTER TABLE table_name DROP CONSTRAINT fk_name; Parameters or Arguments table_name The name of the table where the foreign key has been created. fk_name The name of the foreign key that you wish to remove.
Check out this tip to automatically create scripts to disable, enable, drop and recreate SQL Server Foreign Keys.
Modify, Delete Foreign Keys in SQL Server. Here you will learn how to modify or delete foreign keys in a table. Foreign key constraint enforces referential integrity in SQL Server database. It is used to create relationships between two tables by associating rows of one table with that of another.
21 kwi 2011 · Identify all of your foreign keys in a SQL Server database. Find Violating SQL Server Foreign Key Values. Foreign Key vs. Trigger Referential Integrity in SQL Server. Drop and Re-Create All Foreign Key Constraints in SQL Server. Script to Delete Data from SQL Server Tables with Foreign Key Constraints. How to create a SQL Server foreign key
