rRhsHasNull      84870 ext/sqlite3/libsqlite/sqlite3.c   int rRhsHasNull = 0;  /* Register that is true if RHS contains NULL values */
rRhsHasNull      84884 ext/sqlite3/libsqlite/sqlite3.c                              destIfFalse==destIfNull ? 0 : &rRhsHasNull);
rRhsHasNull      84975 ext/sqlite3/libsqlite/sqlite3.c       assert( destIfFalse!=destIfNull || rRhsHasNull==0 );
rRhsHasNull      84976 ext/sqlite3/libsqlite/sqlite3.c       if( rRhsHasNull==0 ){
rRhsHasNull      85001 ext/sqlite3/libsqlite/sqlite3.c         sqlite3VdbeAddOp2(v, OP_IsNull, rRhsHasNull, destIfNull);