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Add new Compare and Jump codes to the virtual machine. Use them in the

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implementation of aggregate queries. (CVS 5257)

FossilOrigin-Name: 083113652ff8f69b18cf1611710fdbbe5fbd9fef
This commit is contained in:
drh
2008-06-20 18:13:25 +00:00
parent 9324c8f280
commit 16ee60fff9
7 changed files with 100 additions and 40 deletions
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8
src/vdbe.h
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@@ -15,7 +15,7 @@
** or VDBE. The VDBE implements an abstract machine that runs a
** simple program to access and modify the underlying database.
**
** $Id: vdbe.h,v 1.132 2008/05/29 20:22:37 shane Exp $
** $Id: vdbe.h,v 1.133 2008/06/20 18:13:25 drh Exp $
*/
#ifndef _SQLITE_VDBE_H_
#define _SQLITE_VDBE_H_
@@ -109,7 +109,8 @@ typedef struct VdbeOpList VdbeOpList;
** from a single sqliteMalloc(). But no copy is made and the calling
** function should *not* try to free the KeyInfo.
*/
#define P4_KEYINFO_HANDOFF (-9)
#define P4_KEYINFO_HANDOFF (-15)
#define P4_KEYINFO_STATIC (-16)
/*
** The Vdbe.aColName array contains 5n Mem structures, where n is the
@@ -193,8 +194,11 @@ int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);
#ifndef NDEBUG
void sqlite3VdbeComment(Vdbe*, const char*, ...);
# define VdbeComment(X) sqlite3VdbeComment X
void sqlite3VdbeNoopComment(Vdbe*, const char*, ...);
# define VdbeNoopComment(X) sqlite3VdbeNoopComment X
#else
# define VdbeComment(X)
# define VdbeNoopComment(X)
#endif
#endif