Created
September 14, 2023 00:22
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Rust, SQLx, PostgreSQL error when attempting to read a column of type enum
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use serde::{Deserialize, Serialize}; | |
#[derive(sqlx::Type, Serialize, Deserialize, Debug)] | |
#[sqlx(type_name = "status", rename_all = "lowercase")] | |
pub enum Status { | |
Active, | |
Inactive, | |
Suspended | |
} | |
#[derive(sqlx::FromRow, Serialize, Deserialize, Debug)] | |
pub struct TestEnum { | |
pub id: Option<i32>, | |
pub name: Option<String>, | |
pub enum_col: Status, | |
} | |
let returned: Result<TestEnum, Error> = sqlx::query_as::<_, TestEnum>( | |
r#"SELECT id, name, enum_col FROM test_enum LIMIT 1"# | |
) | |
.fetch_one(&pg) | |
.await; | |
/* | |
PostgreSQL: | |
CREATE TYPE status AS ENUM ('active', 'inactive', 'suspended'); | |
CREATE TABLE test_enum ( | |
id SERIAL PRIMARY KEY, | |
name TEXT, | |
enum_col status NOT NULL DEFAULT 'active' | |
); | |
insert into test_enum (name) values ('test'); | |
*/ | |
/* | |
should produce this error: | |
```bash | |
error: unsupported type status of column #3 ("enum_col") | |
--> src/routes/auth.rs:62:53 | |
| | |
62 | let returned: Result<TestEnum, Error> = sqlx::query_as!( | |
| _____________________________________________________^ | |
63 | | TestEnum, | |
64 | | r#"SELECT id, name, enum_col FROM test_enum LIMIT 1"# | |
65 | | ) | |
| |_____________^ | |
| | |
= note: this error originates in the macro `$crate::sqlx_macros::expand_query` which comes from the expansion of the macro `sqlx::query_as` (in Nightly builds, run with -Z macro-backtrace for more info) | |
``` | |
*/ |
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