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Optimisations for expressions of the form "<value> IN (SELECT <column> FROM <table>)". (CVS 4579)

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FossilOrigin-Name: 56d0e32677744df8570b519fae1c04da4ea4984d
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danielk1977
2007-11-29 17:05:18 +00:00
parent ade8648301
commit 9a96b66810
9 changed files with 469 additions and 34 deletions
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8
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.621 2007/11/28 22:36:41 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.622 2007/11/29 17:05:18 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -884,6 +884,7 @@ struct KeyInfo {
sqlite3 *db; /* The database connection */
u8 enc; /* Text encoding - one of the TEXT_Utf* values */
u8 incrKey; /* Increase 2nd key by epsilon before comparison */
u8 prefixIsEqual; /* Treat a prefix as equal */
int nField; /* Number of entries in aColl[] */
u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */
CollSeq *aColl[1]; /* Collating sequence for each term of the key */
@@ -1971,6 +1972,11 @@ int sqlite3Reprepare(Vdbe*);
void sqlite3ExprListCheckLength(Parse*, ExprList*, int, const char*);
CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
#define IN_INDEX_ROWID 1
#define IN_INDEX_EPH 2
#define IN_INDEX_INDEX 3
int sqlite3FindInIndex(Parse *, Expr *, int);
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
int sqlite3JournalSize(sqlite3_vfs *);