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 |
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