Conditional SQLite check constraint?

Question

I have a table defined by the following SQL:

CREATE TABLE test (
  id       integer PRIMARY KEY NOT NULL UNIQUE,
  status   text NOT NULL,
  enddate  date,
          


        

Answer 1

There's nothing stopping you from having multiple CHECK constraints on a single table. IMO the simplest and most easily expandable solution:

CHECK (status IN ("Current", "Complete"))
CHECK (status <> "Complete" OR enddate IS NOT NULL)

This uses the fact that if A then B is logically equivalent to either not A or B.