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Speed up INSERT operations that add data to UNIQUE or PRIMARY KEY indexes by rationalizing duplicate seek operations. (CVS 6599)

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FossilOrigin-Name: cac4f3d812f0a02ca5c1fa78d366f694403929a8
This commit is contained in:
danielk1977
2009-05-04 11:42:29 +00:00
parent ce9b0157f0
commit de630353d8
13 changed files with 188 additions and 166 deletions
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19
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.867 2009/05/03 20:23:54 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.868 2009/05/04 11:42:30 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -1282,6 +1282,7 @@ struct UnpackedRecord {
KeyInfo *pKeyInfo; /* Collation and sort-order information */
u16 nField; /* Number of entries in apMem[] */
u16 flags; /* Boolean settings. UNPACKED_... below */
i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
Mem *aMem; /* Values */
};
@@ -1293,6 +1294,7 @@ struct UnpackedRecord {
#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */
#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */
#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */
#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */
/*
** Each SQL index is represented in memory by an
@@ -1998,12 +2000,13 @@ struct AuthContext {
};
/*
** Bitfield flags for P2 value in OP_Insert and OP_Delete
** Bitfield flags for P5 value in OP_Insert and OP_Delete
*/
#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
#define OPFLAG_ISUPDATE 4 /* This OP_Insert is an sql UPDATE */
#define OPFLAG_APPEND 8 /* This is likely to be an append */
#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
#define OPFLAG_ISUPDATE 4 /* This OP_Insert is an sql UPDATE */
#define OPFLAG_APPEND 8 /* This is likely to be an append */
#define OPFLAG_USESEEKRESULT 16 /* Try to avoid a seek in BtreeInsert() */
/*
* Each trigger present in the database schema is stored as an instance of
@@ -2494,8 +2497,8 @@ void sqlite3GenerateRowDelete(Parse*, Table*, int, int, int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int*);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int,int,
int*,int,int,int,int);
void sqlite3CompleteInsertion(Parse*, Table*, int, int, int*, int, int, int);
int*,int,int,int,int,int*);
void sqlite3CompleteInsertion(Parse*, Table*, int, int, int*, int, int,int,int);
int sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
void sqlite3BeginWriteOperation(Parse*, int, int);
Expr *sqlite3ExprDup(sqlite3*,Expr*,int);