Pablu/go-sqlite3
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Ignore Used for constraints SQLite marked not usable

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This commit is contained in:
Yasuhiro Matsumoto
2026-07-29 09:02:34 +09:00
parent 0cfec60306
commit 518016c844
1 changed files with 5 additions and 1 deletions
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6
sqlite3_opt_vtable.go
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@@ -460,7 +460,11 @@ func goVBestIndex(pVTab unsafe.Pointer, icp unsafe.Pointer) *C.char {
slice := unsafe.Slice(info.aConstraintUsage, int(info.nConstraint)) slice := unsafe.Slice(info.aConstraintUsage, int(info.nConstraint))
index := 1 index := 1
for i := range slice { for i := range slice {
if res.Used[i] { // SQLite returns "xBestIndex malfunction" when an argvIndex is
// assigned to a constraint it marked as not usable, so ignore
// Used for those; they may become usable on a later xBestIndex
// invocation for a different plan.
if res.Used[i] && csts[i].Usable {
slice[i].argvIndex = C.int(index) slice[i].argvIndex = C.int(index)
slice[i].omit = C.uchar(1) slice[i].omit = C.uchar(1)
index++ index++