class ActiveRecord::ConnectionAdapters::PostgreSQL::Table

See {connection.add_exclusion_constraint}[rdoc-ref:SchemaStatements#add_exclusion_constraint]

t.exclusion_constraint("price WITH =, availability_range WITH &&", using: :gist, name: "price_check")

Adds an exclusion constraint.

def exclusion_constraint(...)
  @base.add_exclusion_constraint(name, ...)
end