Struct sqlx::postgres::types::PgMoney [−][src]
pub struct PgMoney(pub i64);postgres only.Expand description
The PostgreSQL MONEY type stores a currency amount with a fixed fractional
precision. The fractional precision is determined by the database’s
lc_monetary setting.
Data is read and written as 64-bit signed integers, and conversion into a decimal should be done using the right precision.
Reading MONEY value in text format is not supported and will cause an error.
locale_frac_digits
This parameter corresponds to the number of digits after the decimal separator.
This value must match what Postgres is expecting for the locale set in the database
or else the decimal value you see on the client side will not match the money value
on the server side.
For most locales, this value is 2.
If you’re not sure what locale your database is set to or how many decimal digits it specifies,
you can execute SHOW lc_monetary; to get the locale name, and then look it up in this list
(you can ignore the .utf8 prefix):
https://lh.2xlibre.net/values/frac_digits/
If that link is dead and you’re on a POSIX-compliant system (Unix, FreeBSD) you can also execute:
$ LC_MONETARY=<value returned by `SHOW lc_monetary`> locale -k frac_digitsAnd the value you want is N in frac_digits=N. If you have shell access to the database
server you should execute it there as available locales may differ between machines.
Note that if frac_digits for the locale is outside the range [0, 10], Postgres assumes
it’s a sentinel value and defaults to 2:
https://github.com/postgres/postgres/blob/master/src/backend/utils/adt/cash.c#L114-L123
Tuple Fields
0: i64The raw integer value sent over the wire; for locales with frac_digits=2 (i.e. most
of them), this will be the value in whole cents.
E.g. for select '$123.45'::money with a locale of en_US (frac_digits=2),
this will be 12345.
If the currency of your locale does not have fractional units, e.g. Yen, then this will just be the units of the currency.
See the type-level docs for an explanation of locale_frac_units.
Implementations
Convert the money value into a BigDecimal using locale_frac_digits.
See the type-level docs for an explanation of locale_frac_digits.
Convert the money value into a Decimal using locale_frac_digits.
See the type-level docs for an explanation of locale_frac_digits.
Convert a Decimal value into money using locale_frac_digits.
See the type-level docs for an explanation of locale_frac_digits.
Note that Decimal has 96 bits of precision, but PgMoney only has 63 plus the sign bit.
If the value is larger than 63 bits it will be truncated.
Convert a BigDecimal value into money using the correct precision
defined in the PostgreSQL settings. The default precision is two.
Trait Implementations
Writes the value of self into buf without moving self. Read more
Writes the value of self into buf in the expected format for the database.
Returns the canonical SQL type for this Rust type. Read more
Auto Trait Implementations
impl RefUnwindSafe for PgMoney
impl UnwindSafe for PgMoney
Blanket Implementations
Mutably borrows from an owned value. Read more
Compare self to key and return true if they are equal.
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