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Optimize simple min() and max() queries. (CVS 382)

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FossilOrigin-Name: cc5abfe392bdb8c3ed00e0610bc2b41851bfc9d7
This commit is contained in:
drh
2002-02-19 15:00:07 +00:00
parent aaab5725db
commit 9562b55115
7 changed files with 287 additions and 130 deletions
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183
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 1.42 2002/02/19 13:39:23 drh Exp $
** $Id: vdbe.h,v 1.43 2002/02/19 15:00:08 drh Exp $
*/
#ifndef _SQLITE_VDBE_H_
#define _SQLITE_VDBE_H_
@@ -97,112 +97,113 @@ typedef struct VdbeOp VdbeOp;
#define OP_KeyAsData 25
#define OP_Recno 26
#define OP_FullKey 27
#define OP_Rewind 28
#define OP_Next 29
#define OP_Last 28
#define OP_Rewind 29
#define OP_Next 30
#define OP_Destroy 30
#define OP_Clear 31
#define OP_CreateIndex 32
#define OP_CreateTable 33
#define OP_IntegrityCk 34
#define OP_Destroy 31
#define OP_Clear 32
#define OP_CreateIndex 33
#define OP_CreateTable 34
#define OP_IntegrityCk 35
#define OP_IdxPut 35
#define OP_IdxDelete 36
#define OP_IdxRecno 37
#define OP_IdxGT 38
#define OP_IdxGE 39
#define OP_IdxPut 36
#define OP_IdxDelete 37
#define OP_IdxRecno 38
#define OP_IdxGT 39
#define OP_IdxGE 40
#define OP_MemLoad 40
#define OP_MemStore 41
#define OP_MemLoad 41
#define OP_MemStore 42
#define OP_ListWrite 42
#define OP_ListRewind 43
#define OP_ListRead 44
#define OP_ListReset 45
#define OP_ListWrite 43
#define OP_ListRewind 44
#define OP_ListRead 45
#define OP_ListReset 46
#define OP_SortPut 46
#define OP_SortMakeRec 47
#define OP_SortMakeKey 48
#define OP_Sort 49
#define OP_SortNext 50
#define OP_SortCallback 51
#define OP_SortReset 52
#define OP_SortPut 47
#define OP_SortMakeRec 48
#define OP_SortMakeKey 49
#define OP_Sort 50
#define OP_SortNext 51
#define OP_SortCallback 52
#define OP_SortReset 53
#define OP_FileOpen 53
#define OP_FileRead 54
#define OP_FileColumn 55
#define OP_FileOpen 54
#define OP_FileRead 55
#define OP_FileColumn 56
#define OP_AggReset 56
#define OP_AggFocus 57
#define OP_AggIncr 58
#define OP_AggNext 59
#define OP_AggSet 60
#define OP_AggGet 61
#define OP_AggReset 57
#define OP_AggFocus 58
#define OP_AggIncr 59
#define OP_AggNext 60
#define OP_AggSet 61
#define OP_AggGet 62
#define OP_SetInsert 62
#define OP_SetFound 63
#define OP_SetNotFound 64
#define OP_SetInsert 63
#define OP_SetFound 64
#define OP_SetNotFound 65
#define OP_MakeRecord 65
#define OP_MakeKey 66
#define OP_MakeIdxKey 67
#define OP_IncrKey 68
#define OP_MakeRecord 66
#define OP_MakeKey 67
#define OP_MakeIdxKey 68
#define OP_IncrKey 69
#define OP_Goto 69
#define OP_If 70
#define OP_Halt 71
#define OP_Goto 70
#define OP_If 71
#define OP_Halt 72
#define OP_ColumnCount 72
#define OP_ColumnName 73
#define OP_Callback 74
#define OP_NullCallback 75
#define OP_ColumnCount 73
#define OP_ColumnName 74
#define OP_Callback 75
#define OP_NullCallback 76
#define OP_Integer 76
#define OP_String 77
#define OP_Pop 78
#define OP_Dup 79
#define OP_Pull 80
#define OP_Push 81
#define OP_MustBeInt 82
#define OP_Integer 77
#define OP_String 78
#define OP_Pop 79
#define OP_Dup 80
#define OP_Pull 81
#define OP_Push 82
#define OP_MustBeInt 83
#define OP_Add 83
#define OP_AddImm 84
#define OP_Subtract 85
#define OP_Multiply 86
#define OP_Divide 87
#define OP_Remainder 88
#define OP_BitAnd 89
#define OP_BitOr 90
#define OP_BitNot 91
#define OP_ShiftLeft 92
#define OP_ShiftRight 93
#define OP_AbsValue 94
#define OP_Precision 95
#define OP_Min 96
#define OP_Max 97
#define OP_Like 98
#define OP_Glob 99
#define OP_Eq 100
#define OP_Ne 101
#define OP_Lt 102
#define OP_Le 103
#define OP_Gt 104
#define OP_Ge 105
#define OP_IsNull 106
#define OP_NotNull 107
#define OP_Negative 108
#define OP_And 109
#define OP_Or 110
#define OP_Not 111
#define OP_Concat 112
#define OP_Noop 113
#define OP_Add 84
#define OP_AddImm 85
#define OP_Subtract 86
#define OP_Multiply 87
#define OP_Divide 88
#define OP_Remainder 89
#define OP_BitAnd 90
#define OP_BitOr 91
#define OP_BitNot 92
#define OP_ShiftLeft 93
#define OP_ShiftRight 94
#define OP_AbsValue 95
#define OP_Precision 96
#define OP_Min 97
#define OP_Max 98
#define OP_Like 99
#define OP_Glob 100
#define OP_Eq 101
#define OP_Ne 102
#define OP_Lt 103
#define OP_Le 104
#define OP_Gt 105
#define OP_Ge 106
#define OP_IsNull 107
#define OP_NotNull 108
#define OP_Negative 109
#define OP_And 110
#define OP_Or 111
#define OP_Not 112
#define OP_Concat 113
#define OP_Noop 114
#define OP_Strlen 114
#define OP_Substr 115
#define OP_Strlen 115
#define OP_Substr 116
#define OP_Limit 116
#define OP_Limit 117
#define OP_MAX 116
#define OP_MAX 117
/*
** Prototypes for the VDBE interface. See comments on the implementation