postgresql-diesel-rust-types.md

PostgreSQL Type	PostgreSQL Size	Description	Range	Diesel Type	Rust Type
Nullable Types		nullable		Nullable<T>	Option<T>
Numeric Types
smallint, int2	2 bytes	signed integer	-32768 to +32767	SmallInt	i16
integer, int, int4	4 bytes	signed integer	-2147483648 to +2147483647	Integer	i32
bigint, int8	8 bytes	signed integer	-9223372036854775808 to +9223372036854775807	BigInt	i64
numeric(p, s), decimal(p, s)	2 bytes per 4 digits + 3 to 8 bytes	exact numeric of selectable precision	131072.16383 digits	Numeric	bigdecimal::BigDecimal
real, float4	4 bytes	single precision floating-point number	6 digits precision	Float	f32
double precision, float8	8 bytes	double precision floating-point number	15 digits precision	Double	f64
smallserial, serial2	2 bytes	autoincrementing integer	1 to 32767	SmallInt	i16
serial, serial4	4 bytes	autoincrementing integer	1 to 2147483647	Integer	i32
bigserial, serial8	8 bytes	autoincrementing integer	1 to 9223372036854775807	BigInt	i64
Monetary Types
money	8 bytes	currency amount	-92233720368547758.08 to +92233720368547758.07	Money	Cents
Character Types
character varying(n), varchar(n)	n+1 or n+4 bytes	variable-length character string		Text	String, &str
character(n), char(n)	n+1 or n+4 bytes	fixed-length character string		Text	String, &str
text	n+1 or n+4 bytes	variable-length character string		Text	String, &str
Binary Data Types
bytea	n+1 to n+4 bytes	binary data ("byte array")		Binary	Vec<u8>, &u8
Date/Time Types
timestamp, timestamp(p) without time zone	8 bytes	date and time of day	4713 BC to 294276 AD, 1 microsecond	Timestamp	chrono::NaiveDateTime
timestamptz, timestamp(p) with time zone	8 bytes	date and time of day, with time zone	4713 BC to 294276 AD, 1 microsecond	Timestamptz	chrono::DateTime
date	4 bytes	calendar date (year, month, day)	4713 BC to 5874897 AD, 1 day	Date	chrono::NaiveDate
time, time(p) without time zone	8 bytes	time of day (no date)	00:00:00 to 24:00:00, 1 microsecond	Time	chrono::NaiveTime
timetz, time(p) with time zone	12 bytes	time of day (no date), with time zone	00:00:00+1459 to 24:00:00-1459, 1 microsecond
interval(fields)(p)	16 bytes	time span	-178000000 years to 178000000 years, 1 microsecond	Interval	PgInterval
Boolean Type
boolean, bool	1 byte	logical Boolean (true/false)		Bool	bool
Geometric Types
point (x,y)	16 bytes	geometric point on a plane
line {A,B,C}	32 bytes	infinite line on a plane
lseg ((x1,y1),(x2,y2))	32 bytes	finite line segment on a plane
box ((x1,y1),(x2,y2))	32 bytes	rectangular box on a plane
path ((x1,y1),...)	16+16n bytes	closed geometric path on a plane
path [(x1,y1),...]	16+16n bytes	open geometric path on a plane
polygon ((x1,y1),...)	40+16n bytes	closed geometric path on a plane
circle <(x,y),r\>	24 bytes	circle on a plane
Network Address Types
cidr	7 or 19 bytes	IPv4 or IPv6 network address		Cidr	ipnetwork::IpNetwork
inet	7 or 19 bytes	IPv4 or IPv6 host address		Inet	ipnetwork::IpNetwork
macaddr	6 bytes	MAC address		MacAddr	[u8; 6]
macaddr8	8 bytes	MAC address (EUI-64 format)
Enumerated Types
enum	4 bytes	enumerated value		(user-defined)	String, enum
Bit String Types
bit(n)	1 byte per 8 bits + 5 or 8 bytes	fixed-length bit string
bit varying(n), varbit	1 byte per 8 bits + 5 or 8 bytes	variable-length bit string
Text Search Types
tsvector		text search document		TsVector
tsquery		text search query		TsQuery
UUID Type
uuid	16 bytes	universally unique identifier		Uuid	uuid::Uuid
XML Type
xml		XML data
JSON Types
json		textual JSON data		Json	serde_json::Value
jsonb		binary JSON data, decomposed		Jsonb	serde_json::Value
Arrays
t[]		array of values		Array<T>	Vec<T>, Vec<Option<T>>, &[T], &[Option<T>]
Range Types
int4range		range of integer		Range<Integer>	(Bound<i32>, Bound<i32>)
int8range		range of bigint		Range<BigInt>	(Bound<i64>, Bound<i64>)
numrange		range of numeric		Range<Numeric>	(Bound<bigdecimal::BigDecimal>, Bound<bigdecimal::BigDecimal>)
tsrange		range of timestamp		Range<Timestamp>	(Bound<chrono::NaiveDateTime>, Bound<chrono::NaiveDateTime>)
tstzrange		range of timestamptz		Range<Timestamptz>	(Bound<chrono::DateTime>, Bound<chrono::DateTime>)
daterange		range of date		Range<Date>	(Bound<chrono::NaiveDate>, Bound<chrono::NaiveDate>)

Thank you for this gist!

I strongly wonder why BIT(n) requires plus 5-8 bytes (per row?)

Good resource, very useful

Super useful thx