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| author | Jack Christensen <jack@jackchristensen.com> | 2025-05-31 15:27:15 +0000 |
|---|---|---|
| committer | Sean Liao <sean@liao.dev> | 2025-08-11 14:27:36 -0700 |
| commit | 3dbef65bf37f1b7ccd1f884761341a5a15456ffa (patch) | |
| tree | af9f6a80091cf86f6d029849e9de220d231724a1 /src/database/sql/driver/driver.go | |
| parent | 2b804abf0712d45801671232585e0011902a5c48 (diff) | |
| download | go-3dbef65bf37f1b7ccd1f884761341a5a15456ffa.tar.xz | |
database/sql: allow drivers to override Scan behavior
Implementing RowsColumnScanner allows the driver
to completely control how values are scanned.
Fixes #67546
Change-Id: Id8e7c3a973479c9665e4476fe2d29e1255aee687
GitHub-Last-Rev: ed0cacaec4a4feead56b09c0d6eee86ed58fe1ee
GitHub-Pull-Request: golang/go#67648
Reviewed-on: https://go-review.googlesource.com/c/go/+/588435
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Sean Liao <sean@liao.dev>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/database/sql/driver/driver.go')
| -rw-r--r-- | src/database/sql/driver/driver.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/database/sql/driver/driver.go b/src/database/sql/driver/driver.go index d0892e80fc..487870be63 100644 --- a/src/database/sql/driver/driver.go +++ b/src/database/sql/driver/driver.go @@ -515,6 +515,18 @@ type RowsColumnTypePrecisionScale interface { ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) } +// RowsColumnScanner may be implemented by [Rows]. It allows the driver to completely +// take responsibility for how values are scanned and replace the normal [database/sql]. +// scanning path. This allows drivers to directly support types that do not implement +// [database/sql.Scanner]. +type RowsColumnScanner interface { + Rows + + // ScanColumn copies the column in the current row into the value pointed at by + // dest. It returns [ErrSkip] to fall back to the normal [database/sql] scanning path. + ScanColumn(dest any, index int) error +} + // Tx is a transaction. type Tx interface { Commit() error |