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- public boolean next() throws DeadlockException, DatabaseException {
- if (numTuples == 0) {
- if (!tableIter[0].first())
- return false;
- } else {
- for(TableIterator tableIterator : tableIter) {
- if (!tableIterator.next()) {
- if (!tableIterator.first())
- return false;
- if (!tableIterator.next())
- return false;
- }
- return false;
- }
- }
- }
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