| Oracle | MySQL | PostgreSQL | Java | |
| 数 | NUMBER | decimal | numeric | double BigDecimal |
| 整数 | int | integer | Integer | |
| smallint | smallint(int2) | Integer | ||
| tinyint | ||||
| bigint | bigint | |||
| 浮点数 | float | float | Float | |
| double | float8 | Double | ||
| 字符 | CHAR | char | char | String |
| VARCHAR2 | varchar | varchar | String | |
| 日期 | date | date | Date | |
| datetime | timestamp | Date |
分类目录归档：其他
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小站日志
2014-12-18 aliyun主机购买，woolgate.xyz域名购买
2014-12-30 wp安装完成，以woolgate.xyz为域名的码农驿站开张，发出第一篇文章
2015-1-19 woolgate.cn/woolgate.net 获得工信部备案许可，正式开张
2015-1-22 站点更名为码农小站
2022-4-24 新购入aliyun主机，重新申请备案
2022-5-18 MII备案通过，站点恢复