ds@1952: /*
ds@1952: ** 2001 September 15
ds@1952: **
ds@1952: ** The author disclaims copyright to this source code.  In place of
ds@1952: ** a legal notice, here is a blessing:
ds@1952: **
ds@1952: **    May you do good and not evil.
ds@1952: **    May you find forgiveness for yourself and forgive others.
ds@1952: **    May you share freely, never taking more than you give.
ds@1952: **
ds@1952: *************************************************************************
ds@1952: ** This file contains C code routines that are called by the parser
ds@1952: ** in order to generate code for DELETE FROM statements.
ds@1952: **
ds@1952: ** $Id$
ds@1952: */
ds@1952: #include "sqliteInt.h"
ds@1952: 
ds@1952: /*
ds@1952: ** Look up every table that is named in pSrc.  If any table is not found,
ds@1952: ** add an error message to pParse->zErrMsg and return NULL.  If all tables
ds@1952: ** are found, return a pointer to the last table.
ds@1952: */
ds@1952: Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
ds@1952:   Table *pTab = 0;
ds@1952:   int i;
ds@1952:   struct SrcList_item *pItem;
ds@1952:   for(i=0, pItem=pSrc->a; i<pSrc->nSrc; i++, pItem++){
ds@1952:     pTab = sqlite3LocateTable(pParse, pItem->zName, pItem->zDatabase);
ds@1952:     sqlite3DeleteTable(pItem->pTab);
ds@1952:     pItem->pTab = pTab;
ds@1952:     if( pTab ){
ds@1952:       pTab->nRef++;
ds@1952:     }
ds@1952:   }
ds@1952:   return pTab;
ds@1952: }
ds@1952: 
ds@1952: /*
ds@1952: ** Check to make sure the given table is writable.  If it is not
ds@1952: ** writable, generate an error message and return 1.  If it is
ds@1952: ** writable return 0;
ds@1952: */
ds@1952: int sqlite3IsReadOnly(Parse *pParse, Table *pTab, int viewOk){
ds@1952:   if( (pTab->readOnly && (pParse->db->flags & SQLITE_WriteSchema)==0
ds@1952:         && pParse->nested==0) 
ds@1952: #ifndef SQLITE_OMIT_VIRTUALTABLE
ds@1952:       || (pTab->pMod && pTab->pMod->pModule->xUpdate==0)
ds@1952: #endif
ds@1952:   ){
ds@1952:     sqlite3ErrorMsg(pParse, "table %s may not be modified", pTab->zName);
ds@1952:     return 1;
ds@1952:   }
ds@1952: #ifndef SQLITE_OMIT_VIEW
ds@1952:   if( !viewOk && pTab->pSelect ){
ds@1952:     sqlite3ErrorMsg(pParse,"cannot modify %s because it is a view",pTab->zName);
ds@1952:     return 1;
ds@1952:   }
ds@1952: #endif
ds@1952:   return 0;
ds@1952: }
ds@1952: 
ds@1952: /*
ds@1952: ** Generate code that will open a table for reading.
ds@1952: */
ds@1952: void sqlite3OpenTable(
ds@1952:   Parse *p,       /* Generate code into this VDBE */
ds@1952:   int iCur,       /* The cursor number of the table */
ds@1952:   int iDb,        /* The database index in sqlite3.aDb[] */
ds@1952:   Table *pTab,    /* The table to be opened */
ds@1952:   int opcode      /* OP_OpenRead or OP_OpenWrite */
ds@1952: ){
ds@1952:   Vdbe *v;
ds@1952:   if( IsVirtual(pTab) ) return;
ds@1952:   v = sqlite3GetVdbe(p);
ds@1952:   assert( opcode==OP_OpenWrite || opcode==OP_OpenRead );
ds@1952:   sqlite3TableLock(p, iDb, pTab->tnum, (opcode==OP_OpenWrite), pTab->zName);
ds@1952:   sqlite3VdbeAddOp(v, OP_Integer, iDb, 0);
ds@1952:   VdbeComment((v, "# %s", pTab->zName));
ds@1952:   sqlite3VdbeAddOp(v, opcode, iCur, pTab->tnum);
ds@1952:   sqlite3VdbeAddOp(v, OP_SetNumColumns, iCur, pTab->nCol);
ds@1952: }
ds@1952: 
ds@1952: 
ds@1952: /*
ds@1952: ** Generate code for a DELETE FROM statement.
ds@1952: **
ds@1952: **     DELETE FROM table_wxyz WHERE a<5 AND b NOT NULL;
ds@1952: **                 \________/       \________________/
ds@1952: **                  pTabList              pWhere
ds@1952: */
ds@1952: void sqlite3DeleteFrom(
ds@1952:   Parse *pParse,         /* The parser context */
ds@1952:   SrcList *pTabList,     /* The table from which we should delete things */
ds@1952:   Expr *pWhere           /* The WHERE clause.  May be null */
ds@1952: ){
ds@1952:   Vdbe *v;               /* The virtual database engine */
ds@1952:   Table *pTab;           /* The table from which records will be deleted */
ds@1952:   const char *zDb;       /* Name of database holding pTab */
ds@1952:   int end, addr = 0;     /* A couple addresses of generated code */
ds@1952:   int i;                 /* Loop counter */
ds@1952:   WhereInfo *pWInfo;     /* Information about the WHERE clause */
ds@1952:   Index *pIdx;           /* For looping over indices of the table */
ds@1952:   int iCur;              /* VDBE Cursor number for pTab */
ds@1952:   sqlite3 *db;           /* Main database structure */
ds@1952:   AuthContext sContext;  /* Authorization context */
ds@1952:   int oldIdx = -1;       /* Cursor for the OLD table of AFTER triggers */
ds@1952:   NameContext sNC;       /* Name context to resolve expressions in */
ds@1952:   int iDb;               /* Database number */
ds@1952:   int memCnt = 0;        /* Memory cell used for change counting */
ds@1952: 
ds@1952: #ifndef SQLITE_OMIT_TRIGGER
ds@1952:   int isView;                  /* True if attempting to delete from a view */
ds@1952:   int triggers_exist = 0;      /* True if any triggers exist */
ds@1952: #endif
ds@1952: 
ds@1952:   sContext.pParse = 0;
ds@1952:   db = pParse->db;
ds@1952:   if( pParse->nErr || db->mallocFailed ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952:   assert( pTabList->nSrc==1 );
ds@1952: 
ds@1952:   /* Locate the table which we want to delete.  This table has to be
ds@1952:   ** put in an SrcList structure because some of the subroutines we
ds@1952:   ** will be calling are designed to work with multiple tables and expect
ds@1952:   ** an SrcList* parameter instead of just a Table* parameter.
ds@1952:   */
ds@1952:   pTab = sqlite3SrcListLookup(pParse, pTabList);
ds@1952:   if( pTab==0 )  goto delete_from_cleanup;
ds@1952: 
ds@1952:   /* Figure out if we have any triggers and if the table being
ds@1952:   ** deleted from is a view
ds@1952:   */
ds@1952: #ifndef SQLITE_OMIT_TRIGGER
ds@1952:   triggers_exist = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0);
ds@1952:   isView = pTab->pSelect!=0;
ds@1952: #else
ds@1952: # define triggers_exist 0
ds@1952: # define isView 0
ds@1952: #endif
ds@1952: #ifdef SQLITE_OMIT_VIEW
ds@1952: # undef isView
ds@1952: # define isView 0
ds@1952: #endif
ds@1952: 
ds@1952:   if( sqlite3IsReadOnly(pParse, pTab, triggers_exist) ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952:   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
ds@1952:   assert( iDb<db->nDb );
ds@1952:   zDb = db->aDb[iDb].zName;
ds@1952:   if( sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb) ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952: 
ds@1952:   /* If pTab is really a view, make sure it has been initialized.
ds@1952:   */
ds@1952:   if( sqlite3ViewGetColumnNames(pParse, pTab) ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952: 
ds@1952:   /* Allocate a cursor used to store the old.* data for a trigger.
ds@1952:   */
ds@1952:   if( triggers_exist ){ 
ds@1952:     oldIdx = pParse->nTab++;
ds@1952:   }
ds@1952: 
ds@1952:   /* Resolve the column names in the WHERE clause.
ds@1952:   */
ds@1952:   assert( pTabList->nSrc==1 );
ds@1952:   iCur = pTabList->a[0].iCursor = pParse->nTab++;
ds@1952:   memset(&sNC, 0, sizeof(sNC));
ds@1952:   sNC.pParse = pParse;
ds@1952:   sNC.pSrcList = pTabList;
ds@1952:   if( sqlite3ExprResolveNames(&sNC, pWhere) ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952: 
ds@1952:   /* Start the view context
ds@1952:   */
ds@1952:   if( isView ){
ds@1952:     sqlite3AuthContextPush(pParse, &sContext, pTab->zName);
ds@1952:   }
ds@1952: 
ds@1952:   /* Begin generating code.
ds@1952:   */
ds@1952:   v = sqlite3GetVdbe(pParse);
ds@1952:   if( v==0 ){
ds@1952:     goto delete_from_cleanup;
ds@1952:   }
ds@1952:   if( pParse->nested==0 ) sqlite3VdbeCountChanges(v);
ds@1952:   sqlite3BeginWriteOperation(pParse, triggers_exist, iDb);
ds@1952: 
ds@1952:   /* If we are trying to delete from a view, realize that view into
ds@1952:   ** a ephemeral table.
ds@1952:   */
ds@1952:   if( isView ){
ds@1952:     Select *pView = sqlite3SelectDup(db, pTab->pSelect);
ds@1952:     sqlite3Select(pParse, pView, SRT_EphemTab, iCur, 0, 0, 0, 0);
ds@1952:     sqlite3SelectDelete(pView);
ds@1952:   }
ds@1952: 
ds@1952:   /* Initialize the counter of the number of rows deleted, if
ds@1952:   ** we are counting rows.
ds@1952:   */
ds@1952:   if( db->flags & SQLITE_CountRows ){
ds@1952:     memCnt = pParse->nMem++;
ds@1952:     sqlite3VdbeAddOp(v, OP_MemInt, 0, memCnt);
ds@1952:   }
ds@1952: 
ds@1952:   /* Special case: A DELETE without a WHERE clause deletes everything.
ds@1952:   ** It is easier just to erase the whole table.  Note, however, that
ds@1952:   ** this means that the row change count will be incorrect.
ds@1952:   */
ds@1952:   if( pWhere==0 && !triggers_exist && !IsVirtual(pTab) ){
ds@1952:     if( db->flags & SQLITE_CountRows ){
ds@1952:       /* If counting rows deleted, just count the total number of
ds@1952:       ** entries in the table. */
ds@1952:       int endOfLoop = sqlite3VdbeMakeLabel(v);
ds@1952:       int addr2;
ds@1952:       if( !isView ){
ds@1952:         sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead);
ds@1952:       }
ds@1952:       sqlite3VdbeAddOp(v, OP_Rewind, iCur, sqlite3VdbeCurrentAddr(v)+2);
ds@1952:       addr2 = sqlite3VdbeAddOp(v, OP_MemIncr, 1, memCnt);
ds@1952:       sqlite3VdbeAddOp(v, OP_Next, iCur, addr2);
ds@1952:       sqlite3VdbeResolveLabel(v, endOfLoop);
ds@1952:       sqlite3VdbeAddOp(v, OP_Close, iCur, 0);
ds@1952:     }
ds@1952:     if( !isView ){
ds@1952:       sqlite3VdbeAddOp(v, OP_Clear, pTab->tnum, iDb);
ds@1952:       if( !pParse->nested ){
ds@1952:         sqlite3VdbeChangeP3(v, -1, pTab->zName, P3_STATIC);
ds@1952:       }
ds@1952:       for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
ds@1952:         assert( pIdx->pSchema==pTab->pSchema );
ds@1952:         sqlite3VdbeAddOp(v, OP_Clear, pIdx->tnum, iDb);
ds@1952:       }
ds@1952:     }
ds@1952:   } 
ds@1952:   /* The usual case: There is a WHERE clause so we have to scan through
ds@1952:   ** the table and pick which records to delete.
ds@1952:   */
ds@1952:   else{
ds@1952:     /* Begin the database scan
ds@1952:     */
ds@1952:     pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0);
ds@1952:     if( pWInfo==0 ) goto delete_from_cleanup;
ds@1952: 
ds@1952:     /* Remember the rowid of every item to be deleted.
ds@1952:     */
ds@1952:     sqlite3VdbeAddOp(v, IsVirtual(pTab) ? OP_VRowid : OP_Rowid, iCur, 0);
ds@1952:     sqlite3VdbeAddOp(v, OP_FifoWrite, 0, 0);
ds@1952:     if( db->flags & SQLITE_CountRows ){
ds@1952:       sqlite3VdbeAddOp(v, OP_MemIncr, 1, memCnt);
ds@1952:     }
ds@1952: 
ds@1952:     /* End the database scan loop.
ds@1952:     */
ds@1952:     sqlite3WhereEnd(pWInfo);
ds@1952: 
ds@1952:     /* Open the pseudo-table used to store OLD if there are triggers.
ds@1952:     */
ds@1952:     if( triggers_exist ){
ds@1952:       sqlite3VdbeAddOp(v, OP_OpenPseudo, oldIdx, 0);
ds@1952:       sqlite3VdbeAddOp(v, OP_SetNumColumns, oldIdx, pTab->nCol);
ds@1952:     }
ds@1952: 
ds@1952:     /* Delete every item whose key was written to the list during the
ds@1952:     ** database scan.  We have to delete items after the scan is complete
ds@1952:     ** because deleting an item can change the scan order.
ds@1952:     */
ds@1952:     end = sqlite3VdbeMakeLabel(v);
ds@1952: 
ds@1952:     /* This is the beginning of the delete loop when there are
ds@1952:     ** row triggers.
ds@1952:     */
ds@1952:     if( triggers_exist ){
ds@1952:       addr = sqlite3VdbeAddOp(v, OP_FifoRead, 0, end);
ds@1952:       if( !isView ){
ds@1952:         sqlite3VdbeAddOp(v, OP_Dup, 0, 0);
ds@1952:         sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead);
ds@1952:       }
ds@1952:       sqlite3VdbeAddOp(v, OP_MoveGe, iCur, 0);
ds@1952:       sqlite3VdbeAddOp(v, OP_Rowid, iCur, 0);
ds@1952:       sqlite3VdbeAddOp(v, OP_RowData, iCur, 0);
ds@1952:       sqlite3VdbeAddOp(v, OP_Insert, oldIdx, 0);
ds@1952:       if( !isView ){
ds@1952:         sqlite3VdbeAddOp(v, OP_Close, iCur, 0);
ds@1952:       }
ds@1952: 
ds@1952:       (void)sqlite3CodeRowTrigger(pParse, TK_DELETE, 0, TRIGGER_BEFORE, pTab,
ds@1952:           -1, oldIdx, (pParse->trigStack)?pParse->trigStack->orconf:OE_Default,
ds@1952:           addr);
ds@1952:     }
ds@1952: 
ds@1952:     if( !isView ){
ds@1952:       /* Open cursors for the table we are deleting from and all its
ds@1952:       ** indices.  If there are row triggers, this happens inside the
ds@1952:       ** OP_FifoRead loop because the cursor have to all be closed
ds@1952:       ** before the trigger fires.  If there are no row triggers, the
ds@1952:       ** cursors are opened only once on the outside the loop.
ds@1952:       */
ds@1952:       sqlite3OpenTableAndIndices(pParse, pTab, iCur, OP_OpenWrite);
ds@1952: 
ds@1952:       /* This is the beginning of the delete loop when there are no
ds@1952:       ** row triggers */
ds@1952:       if( !triggers_exist ){ 
ds@1952:         addr = sqlite3VdbeAddOp(v, OP_FifoRead, 0, end);
ds@1952:       }
ds@1952: 
ds@1952:       /* Delete the row */
ds@1952: #ifndef SQLITE_OMIT_VIRTUALTABLE
ds@1952:       if( IsVirtual(pTab) ){
ds@1952:         pParse->pVirtualLock = pTab;
ds@1952:         sqlite3VdbeOp3(v, OP_VUpdate, 0, 1, (const char*)pTab->pVtab, P3_VTAB);
ds@1952:       }else
ds@1952: #endif
ds@1952:       {
ds@1952:         sqlite3GenerateRowDelete(db, v, pTab, iCur, pParse->nested==0);
ds@1952:       }
ds@1952:     }
ds@1952: 
ds@1952:     /* If there are row triggers, close all cursors then invoke
ds@1952:     ** the AFTER triggers
ds@1952:     */
ds@1952:     if( triggers_exist ){
ds@1952:       if( !isView ){
ds@1952:         for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
ds@1952:           sqlite3VdbeAddOp(v, OP_Close, iCur + i, pIdx->tnum);
ds@1952:         }
ds@1952:         sqlite3VdbeAddOp(v, OP_Close, iCur, 0);
ds@1952:       }
ds@1952:       (void)sqlite3CodeRowTrigger(pParse, TK_DELETE, 0, TRIGGER_AFTER, pTab, -1,
ds@1952:           oldIdx, (pParse->trigStack)?pParse->trigStack->orconf:OE_Default,
ds@1952:           addr);
ds@1952:     }
ds@1952: 
ds@1952:     /* End of the delete loop */
ds@1952:     sqlite3VdbeAddOp(v, OP_Goto, 0, addr);
ds@1952:     sqlite3VdbeResolveLabel(v, end);
ds@1952: 
ds@1952:     /* Close the cursors after the loop if there are no row triggers */
ds@1952:     if( !triggers_exist && !IsVirtual(pTab) ){
ds@1952:       for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
ds@1952:         sqlite3VdbeAddOp(v, OP_Close, iCur + i, pIdx->tnum);
ds@1952:       }
ds@1952:       sqlite3VdbeAddOp(v, OP_Close, iCur, 0);
ds@1952:     }
ds@1952:   }
ds@1952: 
ds@1952:   /*
ds@1952:   ** Return the number of rows that were deleted. If this routine is 
ds@1952:   ** generating code because of a call to sqlite3NestedParse(), do not
ds@1952:   ** invoke the callback function.
ds@1952:   */
ds@1952:   if( db->flags & SQLITE_CountRows && pParse->nested==0 && !pParse->trigStack ){
ds@1952:     sqlite3VdbeAddOp(v, OP_MemLoad, memCnt, 0);
ds@1952:     sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
ds@1952:     sqlite3VdbeSetNumCols(v, 1);
ds@1952:     sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", P3_STATIC);
ds@1952:   }
ds@1952: 
ds@1952: delete_from_cleanup:
ds@1952:   sqlite3AuthContextPop(&sContext);
ds@1952:   sqlite3SrcListDelete(pTabList);
ds@1952:   sqlite3ExprDelete(pWhere);
ds@1952:   return;
ds@1952: }
ds@1952: 
ds@1952: /*
ds@1952: ** This routine generates VDBE code that causes a single row of a
ds@1952: ** single table to be deleted.
ds@1952: **
ds@1952: ** The VDBE must be in a particular state when this routine is called.
ds@1952: ** These are the requirements:
ds@1952: **
ds@1952: **   1.  A read/write cursor pointing to pTab, the table containing the row
ds@1952: **       to be deleted, must be opened as cursor number "base".
ds@1952: **
ds@1952: **   2.  Read/write cursors for all indices of pTab must be open as
ds@1952: **       cursor number base+i for the i-th index.
ds@1952: **
ds@1952: **   3.  The record number of the row to be deleted must be on the top
ds@1952: **       of the stack.
ds@1952: **
ds@1952: ** This routine pops the top of the stack to remove the record number
ds@1952: ** and then generates code to remove both the table record and all index
ds@1952: ** entries that point to that record.
ds@1952: */
ds@1952: void sqlite3GenerateRowDelete(
ds@1952:   sqlite3 *db,       /* The database containing the index */
ds@1952:   Vdbe *v,           /* Generate code into this VDBE */
ds@1952:   Table *pTab,       /* Table containing the row to be deleted */
ds@1952:   int iCur,          /* Cursor number for the table */
ds@1952:   int count          /* Increment the row change counter */
ds@1952: ){
ds@1952:   int addr;
ds@1952:   addr = sqlite3VdbeAddOp(v, OP_NotExists, iCur, 0);
ds@1952:   sqlite3GenerateRowIndexDelete(v, pTab, iCur, 0);
ds@1952:   sqlite3VdbeAddOp(v, OP_Delete, iCur, (count?OPFLAG_NCHANGE:0));
ds@1952:   if( count ){
ds@1952:     sqlite3VdbeChangeP3(v, -1, pTab->zName, P3_STATIC);
ds@1952:   }
ds@1952:   sqlite3VdbeJumpHere(v, addr);
ds@1952: }
ds@1952: 
ds@1952: /*
ds@1952: ** This routine generates VDBE code that causes the deletion of all
ds@1952: ** index entries associated with a single row of a single table.
ds@1952: **
ds@1952: ** The VDBE must be in a particular state when this routine is called.
ds@1952: ** These are the requirements:
ds@1952: **
ds@1952: **   1.  A read/write cursor pointing to pTab, the table containing the row
ds@1952: **       to be deleted, must be opened as cursor number "iCur".
ds@1952: **
ds@1952: **   2.  Read/write cursors for all indices of pTab must be open as
ds@1952: **       cursor number iCur+i for the i-th index.
ds@1952: **
ds@1952: **   3.  The "iCur" cursor must be pointing to the row that is to be
ds@1952: **       deleted.
ds@1952: */
ds@1952: void sqlite3GenerateRowIndexDelete(
ds@1952:   Vdbe *v,           /* Generate code into this VDBE */
ds@1952:   Table *pTab,       /* Table containing the row to be deleted */
ds@1952:   int iCur,          /* Cursor number for the table */
ds@1952:   char *aIdxUsed     /* Only delete if aIdxUsed!=0 && aIdxUsed[i]!=0 */
ds@1952: ){
ds@1952:   int i;
ds@1952:   Index *pIdx;
ds@1952: 
ds@1952:   for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
ds@1952:     if( aIdxUsed!=0 && aIdxUsed[i-1]==0 ) continue;
ds@1952:     sqlite3GenerateIndexKey(v, pIdx, iCur);
ds@1952:     sqlite3VdbeAddOp(v, OP_IdxDelete, iCur+i, 0);
ds@1952:   }
ds@1952: }
ds@1952: 
ds@1952: /*
ds@1952: ** Generate code that will assemble an index key and put it on the top
ds@1952: ** of the tack.  The key with be for index pIdx which is an index on pTab.
ds@1952: ** iCur is the index of a cursor open on the pTab table and pointing to
ds@1952: ** the entry that needs indexing.
ds@1952: */
ds@1952: void sqlite3GenerateIndexKey(
ds@1952:   Vdbe *v,           /* Generate code into this VDBE */
ds@1952:   Index *pIdx,       /* The index for which to generate a key */
ds@1952:   int iCur           /* Cursor number for the pIdx->pTable table */
ds@1952: ){
ds@1952:   int j;
ds@1952:   Table *pTab = pIdx->pTable;
ds@1952: 
ds@1952:   sqlite3VdbeAddOp(v, OP_Rowid, iCur, 0);
ds@1952:   for(j=0; j<pIdx->nColumn; j++){
ds@1952:     int idx = pIdx->aiColumn[j];
ds@1952:     if( idx==pTab->iPKey ){
ds@1952:       sqlite3VdbeAddOp(v, OP_Dup, j, 0);
ds@1952:     }else{
ds@1952:       sqlite3VdbeAddOp(v, OP_Column, iCur, idx);
ds@1952:       sqlite3ColumnDefault(v, pTab, idx);
ds@1952:     }
ds@1952:   }
ds@1952:   sqlite3VdbeAddOp(v, OP_MakeIdxRec, pIdx->nColumn, 0);
ds@1952:   sqlite3IndexAffinityStr(v, pIdx);
ds@1952: }