add Record support for 1 element tuples

diesel-rs / diesel

A safe, extensible ORM and Query Builder for Rust

https://diesel.rs

Apache License 2.0

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add Record support for 1 element tuples #4306

Closed meeshal closed 4 weeks ago

meeshal commented 1 month ago

One element tuples are not interpreted correctly and when they are run against psql they are treated as a single value. In this case using ROW() clearly indicates that 1 element tuple should be interpreted as a row.
Supporting 1 element tuples is needed in #4216 for implementing row_to_json

meeshal commented 1 month ago

@weiznich , I also added support for row_to_json in separate commit like fn row_to_json<Row: RecordOrNullableRecord + MaybeNullableValue<Json>>(row: Row) -> Row::Out; to have some indirections tested. But then I noticed that someone already started to work on this here #4303 so, I'm pushing only changes connected with record.rs.