mysql_common
This crate is an implementation of basic MySql protocol primitives.
This crate:
- defines basic MySql constants;
- implements necessary functionality for MySql
cached_sha2_passwordandmysql_native_passwordauthentication plugins; - implements helper traits for MySql protocol IO;
- implements support of named parameters for prepared statements;
- implements parsers for a subset of MySql protocol packets;
- defines rust representation of MySql protocol value and row;
- implements conversion between MySql values and rust types, between MySql rows and tuples of rust types.
Supported rust types
Crate offers conversion from/to MySql values for following types (please see MySql documentation
on supported ranges for numeric types). Following table refers to MySql protocol types
(see Value struct) and not to MySql column types. Please see MySql documentation for
column and protocol type correspondence:
| Type | Notes |
|---|---|
{i,u}8..{i,u}128, {i,u}size |
MySql int/uint will be converted, bytes will be parsed.⚠️ Note that range of {i,u}128 is greater than supported by MySql integer types but it'll be serialized anyway (as decimal bytes string). |
f32 |
MySql float will be converted to f32, bytes will be parsed as f32.⚠️ MySql double won't be converted to f32 to avoid precision loss (see #17) |
f64 |
MySql float and double will be converted to f64, bytes will be parsed as f64. |
bool |
MySql int {0, 1} or bytes {"0x30", "0x31"} |
Vec<u8> |
MySql bytes |
String |
MySql bytes parsed as utf8 |
Duration (std and time) |
MySql time or bytes parsed as MySql time string |
time::PrimitiveDateTime |
MySql date or bytes parsed as MySql date string |
time::Date |
MySql date or bytes parsed as MySql date string |
time::Time |
MySql date or bytes parsed as MySql date string |
chrono::NaiveTime |
MySql date or bytes parsed as MySql date string |
chrono::NaiveDate |
MySql date or bytes parsed as MySql date string |
chrono::NaiveDateTime |
MySql date or bytes parsed as MySql date string |
uuid::Uuid |
MySql bytes parsed using Uuid::from_slice |
serde_json::Value |
MySql bytes parsed using serde_json::from_str |
mysql_common::Deserialized<T : DeserializeOwned> |
MySql bytes parsed using serde_json::from_str |
Option<T: FromValue> |
Must be used for nullable columns to avoid errors |
decimal::Decimal |
MySql int, uint or bytes parsed using Decimal::from_str.⚠️ Note that this type doesn't support full range of MySql DECIMAL type. |
bigdecimal::BigDecimal |
MySql int, uint, floats or bytes parsed using BigDecimal::parse_bytes.⚠️ Note that range of this type is greater than supported by MySql DECIMAL type but it'll be serialized anyway. |
num_bigint::{BigInt, BigUint} |
MySql int, uint or bytes parsed using _::parse_bytes.⚠️ Note that range of this type is greater than supported by MySql integer types but it'll be serialized anyway (as decimal bytes string). |
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.