presto-main/src/main/java/io/prestosql/operator/PagesHash.java/PagesHash/positionEqualsPositionIgnoreNulls
class PagesHash:    private boolean positionEqualsPositionIgnoreNulls(int leftPosition, int rightPosition)
    {
        long leftPageAddress = addresses.getLong(leftPosition);
        int leftBlockIndex = decodeSliceIndex(leftPageAddress);
        int leftBlockPosition = decodePosition(leftPageAddress);

        long rightPageAddress = addresses.getLong(rightPosition);
        int rightBlockIndex = decodeSliceIndex(rightPageAddress);
        int rightBlockPosition = decodePosition(rightPageAddress);

        return pagesHashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition);
    }