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258ed3f2265a41a46e936e884d8afd6e6f646973 database/sql: avoiding fmt.Sprintf while scanning, avoid allocs with RawBytes
A user reported heavy contention on fmt's printer cache. Avoid
fmt.Sprint. We have to do reflection anyway, and there was
already an asString function to use strconv, so use it.
This CL also eliminates a redundant allocation + copy when
scanning into *[]byte (avoiding the intermediate string)
and avoids an extra alloc when assigning to a caller's RawBytes
(trying to reuse the caller's memory).
Fixes #7086
R=golang-codereviews, nightlyone
CC=golang-codereviews
https://golang.org/cl/50240044
2 files changed
