$ go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix ./...

* ensuring performance schema is enabled when testing some performance schema results
* Added logic to check if the default collation is overridden by the server character_set_collations
* ensure using IANA timezone in test, since tzinfo depending on system won't have deprecated tz like "US/Central" and "US/Pacific"

)

Co-authored-by: elonnzhang <[email protected]>
Co-authored-by: Inada Naoki <[email protected]>

…1691)

If a transaction connection has a cached error, return it
instead of ErrInvalidConn during Commit/Rollback operations.
Fix #1690

* Rename BenchmarkReceiveMassiveRows to BenchmarkReceive10kRows
* Add BenchmarkReceive10kRowsCompress that run BenchmarkReceiveMassiveRows with compression
* Other tiny benchmark improvements.

Avoid unnecessary allocation.

[MariaDB metadata skipping](https://mariadb.com/kb/en/mariadb-protocol-differences-with-mysql/#prepare-statement-skipping-metadata).

With this change, MariaDB server won't send metadata when they have not changed, saving client parsing metadata and network.

This feature rely on these changes:
* extended capabilities support 
* EOF packet deprecation makes current implementation to be revised

A benchmark BenchmarkReceiveMetadata has been added to show the difference.

#1708 added `[]mysqlField` cache to stmt. It was used only for MariaDB cached metadata.

This commit allows MySQL to also benefit from the metadata cache. If the
column names are the same as the cached metadata, it reuses them instead
of allocating new strings.

goos: darwin
goarch: arm64
pkg: github.com/go-sql-driver/mysql
cpu: Apple M1 Pro
                  │ master.txt  │           reuse.txt           │
                  │   sec/op    │   sec/op     vs base          │
ReceiveMetadata-8   1.273m ± 2%   1.269m ± 2%  ~ (p=1.000 n=10)

                  │  master.txt  │              reuse.txt              │
                  │     B/op     │     B/op      vs base               │
ReceiveMetadata-8   88.17Ki ± 0%   80.39Ki ± 0%  -8.82% (p=0.000 n=10)

                  │  master.txt  │             reuse.txt              │
                  │  allocs/op   │ allocs/op   vs base                │
ReceiveMetadata-8   1015.00 ± 0%   16.00 ± 0%  -98.42% (p=0.000 n=10)

Add missing mc.syncSequence()

Fix #1718