一、数据类型
| Name | Aliases | Description | |
|---|---|---|---|
| bigint | int8 | signed eight-byte integer | |
| bigserial | serial8 | autoincrementing eight-byte integer | |
| bit [ (n) ] | fixed-length bit string | ||
| bit varying [ (n) ] | varbit | variable-length bit string | |
| boolean | bool | logical Boolean (true/false) | |
| Box | rectangular Box on a plane | ||
| bytea | binary data ("byte array") | ||
| character [ (n) ] | char [ (n) ] | fixed-length character string | |
| character varying [ (n) ] | varchar [ (n) ] | variable-length character string | |
| cidr | IPv4 or IPv6 network address | ||
| circle | circle on a plane | ||
| date | calendar date (year,month,day) | ||
| double precision | float8 | double precision floating-point number (8 bytes) | |
| inet | IPv4 or IPv6 host address | ||
| integer | int,int4 | signed four-byte integer | |
| interval [fields] [ (p) ] | time span | ||
| json | JSON data | ||
| line | infinite line on a plane | ||
| lseg | line segment on a plane | ||
| macaddr | MAC (Media Access Control) address | ||
| money | currency amount | ||
| numeric [ (p,s) ] | decimal [ (p,255); padding:0.5ex"> exact numeric of selectable precision | ||
| path | geometric path on a plane | ||
| point | geometric point on a plane | ||
| polygon | closed geometric path on a plane | ||
| real | float4 | single precision floating-point number (4 bytes) | |
| smallint | int2 | signed two-byte integer | |
| smallserial | serial2 | autoincrementing two-byte integer | |
| serial | serial4 | autoincrementing four-byte integer | |
| text | time [ (p) ] [ without time zone ] | time of day (no time zone) | |
| time [ (p) ] with time zone | timetz | time of day,including time zone | |
| timestamp [ (p) ] [ without time zone ] | date and time (no time zone) | ||
| timestamp [ (p) ] with time zone | timestamptz | date and time,255); padding:0.5ex"> tsquery | text search query |
| tsvector | text search document | ||
| txid_snapshot | user-level transaction ID snapshot | ||
| uuid | universally unique identifier | ||
| xml | XML data |
