Closed
Description
I have found these related issues/pull requests
This is most likely broken since #2039
Description
bstr is not a feature defined in the sqlx crate, but is documented in the readme file. Moreover bstr::BString is not supported out of the box either.
Reproduction steps
Cargo.toml:
[package]
name = "sqlx-repro"
version = "0.1.0"
edition = "2021"
[dependencies]
bstr = "1.11.3"
sqlx = { version = "0.8.3", features = ["sqlite", "runtime-tokio"] }
tokio = { version = "1.43.0", features = ["full"] }
src/main.rs:
use sqlx::{query_as, FromRow, Sqlite};
#[derive(Debug, FromRow)]
struct Foo {
value: bstr::BString,
}
#[tokio::main]
async fn main() {
let pool: sqlx::Pool<Sqlite> = todo!();
let foo: Foo = query_as("select (value) from foos")
.fetch_one(&pool)
.await
.unwrap();
}
$ cargo check
Checking sqlx-repro v0.1.0 (/Users/t/dev/sqlx-repro)
warning: unreachable statement
--> src/main.rs:11:5
|
10 | let pool: sqlx::Pool<Sqlite> = todo!();
| ------- any code following this expression is unreachable
11 | / let foo: Foo = query_as("select (value) from foos")
12 | | .fetch_one(&pool)
13 | | .await
14 | | .unwrap();
| |__________________^ unreachable statement
|
= note: `#[warn(unreachable_code)]` on by default
error[E0277]: the trait bound `BString: sqlx::Decode<'_, Sqlite>` is not satisfied
--> src/main.rs:12:10
|
12 | .fetch_one(&pool)
| ^^^^^^^^^ the trait `sqlx::Decode<'_, Sqlite>` is not implemented for `BString`
|
= help: the following other types implement trait `sqlx::Decode<'r, DB>`:
`&'a str` implements `sqlx::Decode<'a, sqlx::Any>`
`&'r JsonRawValue` implements `sqlx::Decode<'r, DB>`
`&'r [u8]` implements `sqlx::Decode<'r, Sqlite>`
`&'r [u8]` implements `sqlx::Decode<'r, sqlx::Any>`
`&'r str` implements `sqlx::Decode<'r, Sqlite>`
`Box<[u8]>` implements `sqlx::Decode<'_, Sqlite>`
`Box<str>` implements `sqlx::Decode<'_, Sqlite>`
`Cow<'r, str>` implements `sqlx::Decode<'r, Sqlite>`
and 33 others
note: required for `Foo` to implement `for<'r> FromRow<'r, SqliteRow>`
--> src/main.rs:3:17
|
3 | #[derive(Debug, FromRow)]
| ^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
4 | struct Foo {
| ^^^
note: required by a bound in `QueryAs::<'q, DB, O, A>::fetch_one`
--> /Users/t/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sqlx-core-0.8.3/src/query_as.rs:86:23
|
86 | O: Send + Unpin + for<'r> FromRow<'r, DB::Row>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `QueryAs::<'q, DB, O, A>::fetch_one`
...
160 | pub async fn fetch_one<'e, 'c: 'e, E>(self, executor: E) -> Result<O, Error>
| --------- required by a bound in this associated function
= note: this error originates in the derive macro `FromRow` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `BString: Type<Sqlite>` is not satisfied
--> src/main.rs:12:10
|
12 | .fetch_one(&pool)
| ^^^^^^^^^ the trait `Type<Sqlite>` is not implemented for `BString`
|
= help: the following other types implement trait `Type<DB>`:
`&T` implements `Type<DB>`
`Box<[u8]>` implements `Type<Sqlite>`
`Box<str>` implements `Type<Sqlite>`
`Cow<'_, str>` implements `Type<Sqlite>`
`Json<T>` implements `Type<Sqlite>`
`JsonRawValue` implements `Type<DB>`
`JsonValue` implements `Type<DB>`
`NonZero<i16>` implements `Type<DB>`
and 34 others
note: required for `Foo` to implement `for<'r> FromRow<'r, SqliteRow>`
--> src/main.rs:3:17
|
3 | #[derive(Debug, FromRow)]
| ^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
4 | struct Foo {
| ^^^
note: required by a bound in `QueryAs::<'q, DB, O, A>::fetch_one`
--> /Users/t/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sqlx-core-0.8.3/src/query_as.rs:86:23
|
86 | O: Send + Unpin + for<'r> FromRow<'r, DB::Row>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `QueryAs::<'q, DB, O, A>::fetch_one`
...
160 | pub async fn fetch_one<'e, 'c: 'e, E>(self, executor: E) -> Result<O, Error>
| --------- required by a bound in this associated function
= note: this error originates in the derive macro `FromRow` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `BString: sqlx::Decode<'_, Sqlite>` is not satisfied
--> src/main.rs:12:10
|
12 | .fetch_one(&pool)
| ^^^^^^^^^ the trait `sqlx::Decode<'_, Sqlite>` is not implemented for `BString`
|
= help: the following other types implement trait `sqlx::Decode<'r, DB>`:
`&'a str` implements `sqlx::Decode<'a, sqlx::Any>`
`&'r JsonRawValue` implements `sqlx::Decode<'r, DB>`
`&'r [u8]` implements `sqlx::Decode<'r, Sqlite>`
`&'r [u8]` implements `sqlx::Decode<'r, sqlx::Any>`
`&'r str` implements `sqlx::Decode<'r, Sqlite>`
`Box<[u8]>` implements `sqlx::Decode<'_, Sqlite>`
`Box<str>` implements `sqlx::Decode<'_, Sqlite>`
`Cow<'r, str>` implements `sqlx::Decode<'r, Sqlite>`
and 33 others
note: required for `Foo` to implement `for<'r> FromRow<'r, SqliteRow>`
--> src/main.rs:3:17
|
3 | #[derive(Debug, FromRow)]
| ^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
4 | struct Foo {
| ^^^
note: required by a bound in `QueryAs<'q, DB, O, A>`
--> /Users/t/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sqlx-core-0.8.3/src/query_as.rs:86:23
|
86 | O: Send + Unpin + for<'r> FromRow<'r, DB::Row>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `QueryAs<'q, DB, O, A>`
= note: this error originates in the derive macro `FromRow` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `BString: sqlx::Decode<'_, Sqlite>` is not satisfied
--> src/main.rs:11:20
|
11 | let foo: Foo = query_as("select (value) from foos")
| ____________________^
12 | | .fetch_one(&pool)
| |_________________________^ the trait `sqlx::Decode<'_, Sqlite>` is not implemented for `BString`
|
= help: the following other types implement trait `sqlx::Decode<'r, DB>`:
`&'a str` implements `sqlx::Decode<'a, sqlx::Any>`
`&'r JsonRawValue` implements `sqlx::Decode<'r, DB>`
`&'r [u8]` implements `sqlx::Decode<'r, Sqlite>`
`&'r [u8]` implements `sqlx::Decode<'r, sqlx::Any>`
`&'r str` implements `sqlx::Decode<'r, Sqlite>`
`Box<[u8]>` implements `sqlx::Decode<'_, Sqlite>`
`Box<str>` implements `sqlx::Decode<'_, Sqlite>`
`Cow<'r, str>` implements `sqlx::Decode<'r, Sqlite>`
and 33 others
note: required for `Foo` to implement `for<'r> FromRow<'r, SqliteRow>`
--> src/main.rs:3:17
|
3 | #[derive(Debug, FromRow)]
| ^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
4 | struct Foo {
| ^^^
note: required by a bound in `QueryAs<'q, DB, O, A>`
--> /Users/t/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sqlx-core-0.8.3/src/query_as.rs:86:23
|
86 | O: Send + Unpin + for<'r> FromRow<'r, DB::Row>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `QueryAs<'q, DB, O, A>`
= note: this error originates in the derive macro `FromRow` (in Nightly builds, run with -Z macro-backtrace for more info)
For more information about this error, try `rustc --explain E0277`.
warning: `sqlx-repro` (bin "sqlx-repro") generated 1 warning
error: could not compile `sqlx-repro` (bin "sqlx-repro") due to 4 previous errors; 1 warning emitted
SQLx version
0.8.3
Enabled SQLx features
sqlite runtime-tokio
Database server and version
bundled sqlite
Operating system
macOS 15.1.1 (24B2091)
Rust version
rustc 1.84.0 (9fc6b4312 2025-01-07)