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fix(mysql): decode MySQL 9 VECTOR columns (type 0xf2) - #4441
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This was referenced Oct 2, 2026
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Oct 3, 2026
Rowly deja de depender de anderson-andres-dev/sqlx (rev df7b880): se quita [patch.crates-io] y los 6 crates de sqlx vuelven a la 0.8.6 de crates.io. La 0.8.6 publicada no lee el tipo 0xf2 (transact-rs/sqlx#4441 a煤n no est谩 en una release), as铆 que las lecturas de VECTOR de MySQL 9 llevan "-- gap:" y version_lines exige que sigan fallando con ese error. D8 pasa a parcial y SQL_ENGINE 搂9 suma el P2.
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Adds MySQL 9's
VECTORcolumn type (0xf2) tosqlx-mysql, so result sets with a vector column can be read.Does your PR solve an issue?
fixes #4440
Is this a breaking change?
No.
ColumnTypeispub(crate). Queries that failed with "unknown column type 0xf2" now return rows; nothing that worked before changes.What changes
ColumnType::Vector = 0xf2, decoded intry_from_u16and namedVECTOR.float32values, little-endian).[u8]/Vec<u8>are compatible withVECTOR, so a vector can be decoded as its raw bytes; throughany.rsthat also makes it anAnyTypeInfoKind::Blob.There is no Rust type for vectors here: decoding them into something like
Vec<f32>could be a follow-up if wanted.Tests
decodes_a_mysql_9_vector_columninprotocol/text/column.rs: it decodes a column definition of type0xf2. It fails before this change withunknown column type 0xf2and passes after it.tests/mysql: CI runs MySQL 8, which has noVECTORtype. I checked by hand against MySQL 9.0.1 and 9.7.2, with both protocols:SELECT *on a table with aVECTOR(3)column,SELECT STRING_TO_VECTOR('[1,2,3]'), and a prepared statement with a parameter. In the last one, the vector arrives as its 12 bytes and the column after it is read correctly.