* fix `DecrementSizeGuard::drop()` only waking one `Waiter` regardless of whether that waiter was already woken
* fix connect-backoff loop giving up the size guard
* don't cut in line to open a new connection
* have tasks waiting on `acquire()` wake periodically to check if there's a connection in the queue
Signed-off-by: Austin Bonander <austin@launchbadge.com>
Fix commit updates the `postgres::connection::describe` module to add full support for domain types. Domain types were previously confused with their category which caused invalid oid resolution.
Fixeslaunchbadge/sqlx#110
BREAKING CHANGE: some columns in `query!()` et. al. output will change from `T` to `Option<T>`
breakage should be minimal in practice as
these columns will need to have been manually
overridden anyway to avoid runtime errors
Signed-off-by: Austin Bonander <austin@launchbadge.com>
* Make it possible to use both nullability and type overrides
* Fix override parsing lookahead logic
* Update column override tests
* Support nullability overrides with wildcard type overrides
* Fix tests
* Update query! overrides docs
* Remove last bits of macro_result!
* rustfmt
This solves a problem when needing to describe a query before executing
it, in cases where the query is more of a dynamic nature and binding its
parameters require the type info.
In this case, the first describe doesn't know the input parameters, so
the parameter type info is inferred from the database. In cases of
`varchar(10)[]` or `json` column types, the parameter type is inferred
to the column type. Now if we then try to use `text[]` or `jsonb` as the
types, the database has already stored different types for these
parameters for the statement, and will error out.
So we'll now only store the statement to the cache when it comes from an
actual execution of the query.
