How to drop all Foreign Key constraints in all tables?

Question

I want to write sql command to drop all constraints in all tables. I searched on the internet and found the following which works fine if the database is small and not compl

Answer 1

Here's a short and sweet script I use (on SQL Server 2008 and up) to remove all foreign keys that also takes into account the object's schema:

declare @sql varchar(max) = (
    select 
        'alter table ' + quotename(schema_name(schema_id)) + '.' +
        quotename(object_name(parent_object_id)) +
        ' drop constraint '+quotename(name) + ';'
    from sys.foreign_keys
    for xml path('')
);
exec sp_executesql @sql;