1735     int regBignull = 0;          /* big-null flag register */  in sqlite3WhereCodeOneLoopStart()  local
1797       pLevel->regBignull = regBignull = ++pParse->nMem;  in sqlite3WhereCodeOneLoopStart()
1799         sqlite3VdbeAddOp2(v, OP_Integer, 0, regBignull);  in sqlite3WhereCodeOneLoopStart()
1830     addrNxt = (regBignull ? pLevel->addrBignull : pLevel->addrNxt);  in sqlite3WhereCodeOneLoopStart()
1868     }else if( regBignull ){  in sqlite3WhereCodeOneLoopStart()
1879       if( regBignull ){  in sqlite3WhereCodeOneLoopStart()
1880         sqlite3VdbeAddOp2(v, OP_Integer, 1, regBignull);  in sqlite3WhereCodeOneLoopStart()
1893         assert( regBignull==0 );  in sqlite3WhereCodeOneLoopStart()
1921       if( regBignull ){  in sqlite3WhereCodeOneLoopStart()
1978       if( regBignull==0 ){  in sqlite3WhereCodeOneLoopStart()
1992       if( regBignull ){  in sqlite3WhereCodeOneLoopStart()
1994         sqlite3VdbeAddOp2(v, OP_IfNot, regBignull, sqlite3VdbeCurrentAddr(v)+3);  in sqlite3WhereCodeOneLoopStart()
2006     if( regBignull ){  in sqlite3WhereCodeOneLoopStart()
2012       sqlite3VdbeAddOp2(v, OP_If, regBignull, sqlite3VdbeCurrentAddr(v)+2);  in sqlite3WhereCodeOneLoopStart()