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| author | drh <drh@noemail.net> | 2014-07-22 20:02:19 +0000 |
|---|---|---|
| committer | drh <drh@noemail.net> | 2014-07-22 20:02:19 +0000 |
| commit | 3526319b483fac1aba4dd19c93ebd61aa2663b97 (patch) | |
| tree | bdbc66cef06da1ddfa50b7bc274542cd14bf6b11 /src/sqliteInt.h | |
| parent | a45fdc7b1e3faabdd579e89415db4551d4d38005 (diff) | |
| download | sqlite-3526319b483fac1aba4dd19c93ebd61aa2663b97.tar.gz sqlite-3526319b483fac1aba4dd19c93ebd61aa2663b97.zip | |
Add the OP_ReopenIdx opcode that works like OP_OpenRead except that it becomes
a no-op if the cursor is already open on the same index. Update the
OR-optimization logic to make use of OP_ReopenIdx in order to avoid
unnecessary cursor open requests sent to the B-Tree layer.
FossilOrigin-Name: 77f412caf0192d3e7fecb377d6d72123d8b64424
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index 8f256d52f..7edc04ca4 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -2136,6 +2136,7 @@ struct SrcList { #define WHERE_DISTINCTBY 0x0200 /* pOrderby is really a DISTINCT clause */ #define WHERE_WANT_DISTINCT 0x0400 /* All output needs to be distinct */ #define WHERE_SORTBYGROUP 0x0800 /* Support sqlite3WhereIsSorted() */ +#define WHERE_REOPEN_IDX 0x1000 /* Try to use OP_ReopenIdx */ /* Allowed return values from sqlite3WhereIsDistinct() */ |