- serial # 4字节,自增序列
- bigserial # 8字节
text default ''::text- bigint default 0 # 8字节
- smallint # 2字节
- int, integer # 4字节
- decimal # 变长, 声明精度,精确
- numeric # 同上
- float
- real # 4字节,变精度,不精确
- double precision # 8字节,变精度,不精确
- boolean default false
- text[] # text数组
- date
- time
- timestamp with time zone
- interval
- bytea # 二进制
- money
- uuid