*カラム型とRubyクラス
| migrationの型 | Rubyのクラス | MySQL | PostgreSQL |
|---|---|---|---|
| integer | FixedNum | int(11) | integer |
| decimal | BigDecimal | decimal(10,0) | decimal |
| float | Float | float | float |
| boolean | TrueClass/FalseClass | tinyint(1) | boolean |
| string | String | varchar(255) | character varying |
| text | String | text | text |
| date | Date | date | date |
| datetime | ActiveSupport::TimeWithZone | datetime | timestamp |
| time | Time | time | time |
| timestamp | ActiveSupport::TimeWithZone | timestamp | timestamp |
| binary | String | blob | bytea |