Row-to-struct derive forembeddb
The #[derive(FromEmbedRow)] procedural macro for embeddb — maps DuckDB analytics rows into your structs by column name, with Option and type-checked conversions.
Companion to embeddb
Re-exported through embeddb's default derive feature, so #[derive(FromEmbedRow)] works from a single dependency.
- By name — fields map to columns by identifier, not position.
- Typed — conversions go through FromEmbedValue with clear errors.
What it gives you
Features
FromEmbedRow derive
Generates a FromEmbedRow impl mapping analytics rows into structs by column name.
Typed conversions
Fields convert through FromEmbedValue — i64, f64, String, bool, i128, Vec
Clear errors
Missing column or type mismatch on a non-Option field errors, naming the column.
Questions
Frequently asked
What is the embeddb-derive crate?
embeddb-derive is the procedural macro crate for embeddb. It provides
How does it relate to embeddb?
It is a companion crate to embeddb. The embeddb crate re-exports the derive under its default-on derive feature, so consumers write
What field types does the derive support?
Fields convert through the FromEmbedValue trait — i64, f64, String, bool, i128, Vec<u8>, and Option<T> (None for a null or absent column). A missing column or type mismatch on a non-Option field returns an error naming the column.