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Performance improvements:

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Avoid unnecessary seeks when doing a single-row UPDATE on a WITHOUT ROWID
table.

FossilOrigin-Name: 6f187a0fb1b09ebc4732c4afbf3c813f82e069f1
This commit is contained in:
drh
2013-11-08 15:19:46 +00:00
parent 81897bb14e
commit fc8d4f96b4
6 changed files with 91 additions and 33 deletions
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2
src/sqliteInt.h
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@@ -2876,7 +2876,7 @@ int sqlite3WhereIsDistinct(WhereInfo*);
int sqlite3WhereIsOrdered(WhereInfo*);
int sqlite3WhereContinueLabel(WhereInfo*);
int sqlite3WhereBreakLabel(WhereInfo*);
int sqlite3WhereOkOnePass(WhereInfo*);
int sqlite3WhereOkOnePass(WhereInfo*, int*);
int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8);
void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
void sqlite3ExprCodeMove(Parse*, int, int, int);