480   assert( (pMem->flags & MEM_Null)==0  in numericType()
482   if( pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null) ){  in numericType()
486     return pMem->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Null);  in numericType()
563   }else if( p->flags & MEM_Null ){  in memTracePrint()
1113   if( (pIn3->flags & MEM_Null)==0 ) break;  in sqlite3VdbeExec()
1360   pOut->flags = nullFlag = pOp->p1 ? (MEM_Null|MEM_Cleared) : MEM_Null;  in sqlite3VdbeExec()
1387   pOut->flags = (pOut->flags&~(MEM_Undefined|MEM_AffMask))|MEM_Null;  in sqlite3VdbeExec()
1646   testcase( flags1 & MEM_Null );  in sqlite3VdbeExec()
1647   testcase( pIn2->flags & MEM_Null );  in sqlite3VdbeExec()
1648   if( (flags1 | pIn2->flags) & MEM_Null ){  in sqlite3VdbeExec()
1771   }else if( ((type1 | type2) & MEM_Null)!=0 ){  in sqlite3VdbeExec()
1882   if( (pIn1->flags | pIn2->flags) & MEM_Null ){  in sqlite3VdbeExec()
2153   if( (flags1 | flags3)&MEM_Null ){  in sqlite3VdbeExec()
2163       if( (flags1&flags3&MEM_Null)!=0  in sqlite3VdbeExec()
2168         res = ((flags3 & MEM_Null) ? -1 : +1);  /* Operands are not equal */  in sqlite3VdbeExec()
2370        && ((aMem[p1+idx].flags & MEM_Null) || (aMem[p2+idx].flags & MEM_Null))  in sqlite3VdbeExec()
2438     MemSetTypeFlag(pOut, MEM_Null);  in sqlite3VdbeExec()
2485   if( (pIn1->flags & MEM_Null)==0 ){  in sqlite3VdbeExec()
2504   if( (pIn1->flags & MEM_Null)==0 ){  in sqlite3VdbeExec()
2584   VdbeBranchTaken( (pIn1->flags & MEM_Null)!=0, 2);  in sqlite3VdbeExec()
2585   if( (pIn1->flags & MEM_Null)!=0 ){  in sqlite3VdbeExec()
2686   if( (aMem[pOp->p1].flags & MEM_Null)!=0  in sqlite3VdbeExec()
2687    || (aMem[pOp->p3].flags & MEM_Null)!=0  in sqlite3VdbeExec()
2703   VdbeBranchTaken( (pIn1->flags & MEM_Null)==0, 2);  in sqlite3VdbeExec()
2704   if( (pIn1->flags & MEM_Null)==0 ){  in sqlite3VdbeExec()
3024         pDest->flags = MEM_Null;  in sqlite3VdbeExec()
3123     if( (pIn1->flags & MEM_Null)==0 ){  in sqlite3VdbeExec()
3328     while( (pLast->flags & MEM_Null)!=0 && nField>pOp->p5 ){  in sqlite3VdbeExec()
3364     if( pRec->flags & MEM_Null ){  in sqlite3VdbeExec()
4338     assert( aMem[pOp->p3].flags & MEM_Null );  in sqlite3VdbeExec()
4650         if( (newType & MEM_Null) || oc>=OP_SeekGE ){  in sqlite3VdbeExec()
5204         if( r.aMem[ii].flags & MEM_Null ){  in sqlite3VdbeExec()
5925     pOut->flags = MEM_Null;  in sqlite3VdbeExec()
5945       pOut->flags = MEM_Null;  in sqlite3VdbeExec()
6647   pOut->flags = MEM_Null;  in sqlite3VdbeExec()
7469   sqlite3VdbeMemInit(pCtx->pOut, db, MEM_Null);  in sqlite3VdbeExec()
7524   assert( pCtx->pOut->flags==MEM_Null );  in sqlite3VdbeExec()
7546     pCtx->pOut->flags = MEM_Null;  in sqlite3VdbeExec()
7550   assert( pCtx->pOut->flags==MEM_Null );  in sqlite3VdbeExec()
7587   assert( (pMem->flags & ~(MEM_Null|MEM_Agg))==0 );  in sqlite3VdbeExec()
8017   pOut->flags = MEM_Null;  in sqlite3VdbeExec()
8129     pDest->flags = MEM_Null|MEM_Zero;  in sqlite3VdbeExec()
8132     MemSetTypeFlag(pDest, MEM_Null);  in sqlite3VdbeExec()
8292       assert( nArg>1 && apArg[0] && (apArg[0]->flags&MEM_Null) );  in sqlite3VdbeExec()
8422   MemSetTypeFlag(pOut, MEM_Null);  in sqlite3VdbeExec()