Merge pull request #361 from onesien/patch-1

refactor(datatype): Add missing datatypes

Author: wzrdtales

lib/data_type.js

@@ -3,7 +3,9 @@ module.exports = {
   STRING: 'string',
   TEXT: 'text',
   SMALLINT: 'smallint',
+  BIGINT: 'bigint',
   INTEGER: 'int',
+  SMALL_INTEGER: 'smallint',
   BIG_INTEGER: 'bigint',
   REAL: 'real',
   DATE: 'date',