Access the underlying row type of `QueryResult` #4309

Job	Run time
Rustfmt	16s
Init	5s
Clippy	1m 10s
Examples (examples/actix_example)	2m 22s
Unit Test	3m 11s
Examples (examples/axum_example)	2m 20s
Examples (examples/basic)	1m 19s
Examples (examples/graphql_example)	2m 34s
Examples (examples/jsonrpsee_example)	2m 30s
Examples (examples/loco_example)	3m 11s
Examples (examples/loco_starter)	3m 36s
Examples (examples/poem_example)	2m 15s
Examples (examples/proxy_gluesql_example)	1m 12s
Examples (examples/rocket_example)	3m 13s
Examples (examples/rocket_okapi_example)	3m 11s
Examples (examples/salvo_example)	2m 33s
Examples (examples/seaography_example)	2m 25s
Examples (examples/tonic_example)	2m 25s
Compile PostgreSQL (tokio, native-tls)	2m 45s
Compile PostgreSQL (tokio, rustls)	2m 59s
Compile MySQL (actix, native-tls)	2m 59s
Issues Matrix	0s
Compile MySQL (actix, rustls)	2m 55s
CLI	0s
Compile SQLite (async-std, native-tls)	2m 45s
Compile SQLite (async-std, rustls)	3m 0s
Issues	0s
Postgres (14, tokio, native-tls)	6m 50s
Postgres (15, tokio, native-tls)	6m 46s
Postgres (16, tokio, native-tls)	6m 48s
MySQL (8, actix, native-tls)	3m 29s
MySQL (5.7, actix, native-tls)	3m 32s
MariaDB (10.6, actix, native-tls)	2m 31s
SQLite (async-std, native-tls)	4m 34s
SQLite (async-std, rustls)	4m 37s
	1h 36m 18s

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