A constraint is a condition that has to be fulfilled in a given context.
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few …
ruby-on-rails database migration constraints notnullHow do I put a constraint on a column so that it can only contain the following values? What do …
sql-server database constraintsI know the syntax: ALTER TABLE [TheTable] DROP CONSTRAINT [TheDefaultConstraint] but how to I drop the default constraint when I …
sql tsql constraints defaultIn C# we can define a generic type that imposes constraints on the types that can be used as the …
c++ templates constraintsIs it possible to change the constraint name in Postgres? I have a PK added with: ALTER TABLE contractor_contractor …
postgresql constraintsHow can I truncate all user table in oracle? I have problem with tables constraints.
oracle constraints truncateI'd like to add a constraint which enforces uniqueness on a column only in a portion of a table. ALTER …
postgresql constraints unique-constraintI'm doing some bulk migration of a large Oracle database. The first step of this involves renaming a whole load …
sql oracle constraints rename table-renameclass Sample<T> : IDisposable // case A { public void Dispose() { throw new NotImplementedException(); } } class SampleB<T> where …
c# generics inheritance constraintsLet's say there's a table created as follows: create table testTable ( colA int not null ) How would you drop the …
mysql null constraints