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Optimizations to the code generator. (CVS 1899)

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FossilOrigin-Name: bd6649c5aae1bf182610eb267b546c297a34481d
This commit is contained in:
drh
2004-08-21 17:54:45 +00:00
parent 92febd92ad
commit 290c19482e
19 changed files with 256 additions and 355 deletions
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src/insert.c
+16 -17
View File
@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle INSERT statements in SQLite.
**
** $Id: insert.c,v 1.114 2004/07/24 17:38:29 drh Exp $
** $Id: insert.c,v 1.115 2004/08/21 17:54:45 drh Exp $
*/
#include "sqliteInt.h"
@@ -333,10 +333,7 @@ void sqlite3Insert(
nColumn = pList->nExpr;
dummy.nSrc = 0;
for(i=0; i<nColumn; i++){
if( sqlite3ExprResolveIds(pParse, &dummy, 0, pList->a[i].pExpr) ){
goto insert_cleanup;
}
if( sqlite3ExprCheck(pParse, pList->a[i].pExpr, 0, 0) ){
if( sqlite3ExprResolveAndCheck(pParse,&dummy,0,pList->a[i].pExpr,0,0) ){
goto insert_cleanup;
}
}
@@ -420,8 +417,7 @@ void sqlite3Insert(
/* Open tables and indices if there are no row triggers */
if( !row_triggers_exist ){
base = pParse->nTab;
idx = sqlite3OpenTableAndIndices(pParse, pTab, base);
pParse->nTab += idx;
sqlite3OpenTableAndIndices(pParse, pTab, base, OP_OpenWrite);
}
/* If the data source is a temporary table, then we have to create
@@ -507,8 +503,7 @@ void sqlite3Insert(
*/
if( row_triggers_exist && !isView ){
base = pParse->nTab;
idx = sqlite3OpenTableAndIndices(pParse, pTab, base);
pParse->nTab += idx;
sqlite3OpenTableAndIndices(pParse, pTab, base, OP_OpenWrite);
}
/* Push the record number for the new entry onto the stack. The
@@ -993,25 +988,29 @@ void sqlite3CompleteInsertion(
}
/*
** Generate code that will open write cursors for a table and for all
** Generate code that will open cursors for a table and for all
** indices of that table. The "base" parameter is the cursor number used
** for the table. Indices are opened on subsequent cursors.
**
** Return the total number of cursors opened. This is always at least
** 1 (for the main table) plus more for each cursor.
*/
int sqlite3OpenTableAndIndices(Parse *pParse, Table *pTab, int base){
void sqlite3OpenTableAndIndices(
Parse *pParse, /* Parsing context */
Table *pTab, /* Table to be opened */
int base, /* Cursor number assigned to the table */
int op /* OP_OpenRead or OP_OpenWrite */
){
int i;
Index *pIdx;
Vdbe *v = sqlite3GetVdbe(pParse);
assert( v!=0 );
sqlite3VdbeAddOp(v, OP_Integer, pTab->iDb, 0);
sqlite3VdbeAddOp(v, OP_OpenWrite, base, pTab->tnum);
sqlite3VdbeAddOp(v, op, base, pTab->tnum);
sqlite3VdbeAddOp(v, OP_SetNumColumns, base, pTab->nCol);
for(i=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
sqlite3VdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
sqlite3VdbeOp3(v, OP_OpenWrite, i+base, pIdx->tnum,
sqlite3VdbeOp3(v, op, i+base, pIdx->tnum,
(char*)&pIdx->keyInfo, P3_KEYINFO);
}
return i;
if( pParse->nTab<=base+i ){
pParse->nTab = base+i;
}
}