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master: 83%

Ran 29 Apr 2025 02:49AM UTC

Files 18

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Committed 29 Apr 2025 02:43AM UTC coverage: 81.877% (-0.07%) from 81.948%

Job # 14722225342.29

Build Type

push

github

Committed by

web-flow

Commit Message

Optimization: statements reuse previous column name (#1711)

#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)

Run Details

3289 of 4017 relevant lines covered (81.88%)

76088.72 hits per line

go-sql-driver / mysql / 14722225342 / 29
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master: 83%

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go-sql-driver / mysql / 14722225342 / 29 83% master: 83%

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go-sql-driver / mysql / 14722225342 / 29
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master: 83%

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