Module types 

Supported types

Rust type	Exasol type
bool	BOOLEAN
i8, i16, i32, i64	DECIMAL
f64	DOUBLE
String, &str	CHAR(n) ASCII/UTF8, VARCHAR(n) ASCII/UTF8
ExaIntervalYearToMonth	INTERVAL YEAR TO MONTH
HashType	HASHTYPE
Option<T>	T (for any T that implements Type)

chrono feature

Rust type	Exasol type
chrono::NaiveDate	DATE
chrono::NaiveDateTime	TIMESTAMP
chrono::TimeDelta	INTERVAL DAY TO SECOND

time feature

Rust type	Exasol type
time::Date	DATE
time::PrimitiveDateTime	TIMESTAMP
time::Duration	INTERVAL DAY TO SECOND

rust_decimal feature

Rust type	Exasol type
rust_decimal::Decimal	DECIMAL(p,s)

bigdecimal feature

Rust type	Exasol type
bigdecimal::BigDecimal	DECIMAL(p,s)

uuid feature

Rust type	Exasol type
uuid::Uuid	HASHTYPE

geo-types feature

Rust type	Exasol type
geo_types::Geometry	GEOMETRY

Note: due to a bug in the Exasol websocket API, GEOMETRY can’t be used as prepared statement bind parameters. It can, however, be used as a column in a returned result set or with runtime checked queries.

json feature

The json feature enables Encode and Decode implementations for Json<T>, serde_json::Value and &serde_json::value::RawValue.

Structs

ExaIntervalYearToMonth

A duration interval as a representation of the INTERVAL YEAR TO MONTH datatype.

ExaIter

Adapter allowing any iterator of encodable values to be treated and passed as a one dimensional parameter array for a column to Exasol in a single query invocation. Multi dimensional arrays are not supported. The adapter is needed because Encode is still a foreign trait and thus cannot be implemented in a generic manner to all types implementing IntoIterator.

HashType

Newtype used for more explicit encoding/decoding of arbitrary length data into/from HASHTYPE columns.

Traits

ExaHasArrayType

Marker trait that limits arrays encoding to one dimensioanl arrays.