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Added support for the INTEGER PRIMARY KEY column type. (CVS 333)

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FossilOrigin-Name: 236a54d289e858a1e0505a20d907a2a40c01b521
This commit is contained in:
drh
2001-12-21 14:30:42 +00:00
parent 7c917d196f
commit 4a32431ce7
14 changed files with 432 additions and 112 deletions
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52
src/update.c
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@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle UPDATE statements.
**
** $Id: update.c,v 1.22 2001/11/21 02:21:12 drh Exp $
** $Id: update.c,v 1.23 2001/12/21 14:30:43 drh Exp $
*/
#include "sqliteInt.h"
@@ -40,6 +40,8 @@ void sqliteUpdate(
** an expression for the i-th column of the table.
** aXRef[i]==-1 if the i-th column is not changed. */
int openOp; /* Opcode used to open tables */
int chngRecno; /* True if the record number is being changed */
Expr *pRecnoExpr; /* Expression defining the new record number */
if( pParse->nErr || sqlite_malloc_failed ) goto update_cleanup;
db = pParse->db;
@@ -89,6 +91,7 @@ void sqliteUpdate(
goto update_cleanup;
}
}
chngRecno = 0;
for(i=0; i<pChanges->nExpr; i++){
if( sqliteExprResolveIds(pParse, pTabList, pChanges->a[i].pExpr) ){
goto update_cleanup;
@@ -98,6 +101,10 @@ void sqliteUpdate(
}
for(j=0; j<pTab->nCol; j++){
if( sqliteStrICmp(pTab->aCol[j].zName, pChanges->a[i].zName)==0 ){
if( i==pTab->iPKey ){
chngRecno = 1;
pRecnoExpr = pChanges->a[i].pExpr;
}
aXRef[j] = i;
break;
}
@@ -115,8 +122,12 @@ void sqliteUpdate(
** key includes one of the columns named in pChanges.
*/
for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
for(i=0; i<pIdx->nColumn; i++){
if( aXRef[pIdx->aiColumn[i]]>=0 ) break;
if( chngRecno ){
i = 0;
}else {
for(i=0; i<pIdx->nColumn; i++){
if( aXRef[pIdx->aiColumn[i]]>=0 ) break;
}
}
if( i<pIdx->nColumn ) nIdx++;
}
@@ -125,8 +136,12 @@ void sqliteUpdate(
if( apIdx==0 ) goto update_cleanup;
}
for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
for(i=0; i<pIdx->nColumn; i++){
if( aXRef[pIdx->aiColumn[i]]>=0 ) break;
if( chngRecno ){
i = 0;
}else{
for(i=0; i<pIdx->nColumn; i++){
if( aXRef[pIdx->aiColumn[i]]>=0 ) break;
}
}
if( i<pIdx->nColumn ) apIdx[nIdx++] = pIdx;
}
@@ -175,6 +190,7 @@ void sqliteUpdate(
** the old data for each record to be updated because some columns
** might not change and we will need to copy the old value.
** Also, the old data is needed to delete the old index entires.
** So make the cursor point at the old record.
*/
end = sqliteVdbeMakeLabel(v);
addr = sqliteVdbeAddOp(v, OP_ListRead, 0, end);
@@ -193,9 +209,22 @@ void sqliteUpdate(
sqliteVdbeAddOp(v, OP_IdxDelete, base+i+1, 0);
}
/* If changing the record number, remove the old record number
** from the top of the stack and replace it with the new one.
*/
if( chngRecno ){
sqliteVdbeAddOp(v, OP_Pop, 1, 0);
sqliteExprCode(pParse, pRecnoExpr);
sqliteVdbeAddOp(v, OP_AddImm, 0, 0);
}
/* Compute new data for this record.
*/
for(i=0; i<pTab->nCol; i++){
if( i==pTab->iPKey ){
sqliteVdbeAddOp(v, OP_Dup, i, 0);
continue;
}
j = aXRef[i];
if( j<0 ){
sqliteVdbeAddOp(v, OP_Column, base, i);
@@ -204,13 +233,24 @@ void sqliteUpdate(
}
}
/* If changing the record number, delete the hold record.
*/
if( chngRecno ){
sqliteVdbeAddOp(v, OP_Delete, 0, 0);
}
/* Insert new index entries that correspond to the new data
*/
for(i=0; i<nIdx; i++){
sqliteVdbeAddOp(v, OP_Dup, pTab->nCol, 0); /* The KEY */
pIdx = apIdx[i];
for(j=0; j<pIdx->nColumn; j++){
sqliteVdbeAddOp(v, OP_Dup, j+pTab->nCol-pIdx->aiColumn[j], 0);
int idx = pIdx->aiColumn[j];
if( idx==pTab->iPKey ){
sqliteVdbeAddOp(v, OP_Dup, j, 0);
}else{
sqliteVdbeAddOp(v, OP_Dup, j+pTab->nCol-idx, 0);
}
}
sqliteVdbeAddOp(v, OP_MakeIdxKey, pIdx->nColumn, 0);
sqliteVdbeAddOp(v, OP_IdxPut, base+i+1, pIdx->isUnique);