Method: Sequel::Postgres::DatabaseMethods#primary_key

Defined in:
lib/sequel/adapters/shared/postgres.rb

#primary_key(table, opts = OPTS) ⇒ Object

Return primary key for the given table.



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# File 'lib/sequel/adapters/shared/postgres.rb', line 386

def primary_key(table, opts=OPTS)
  quoted_table = quote_schema_table(table)
  Sequel.synchronize{return @primary_keys[quoted_table] if @primary_keys.has_key?(quoted_table)}
  sql = "#{SELECT_PK_SQL} AND pg_class.oid = #{literal(regclass_oid(table, opts))}"
  value = fetch(sql).single_value
  Sequel.synchronize{@primary_keys[quoted_table] = value}
end