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row group skipping for is [not] null queries

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Colin Dellow
2018-03-12 21:09:00 -04:00
parent 95748a5192
commit 110e3e3668
2 changed files with 8 additions and 3 deletions
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9
parquet/parquet_cursor.cc
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@@ -44,11 +44,16 @@ bool ParquetCursor::currentRowGroupSatisfiesFilter() {
if(column == -1) {
rv = currentRowGroupSatisfiesRowIdFilter(constraints[i]);
} else {
// printf("column = %d\n", column);
// std::unique_ptr<parquet::ColumnChunkMetaData> md = rowGroupMetadata->ColumnChunk(column);
std::unique_ptr<parquet::ColumnChunkMetaData> md = rowGroupMetadata->ColumnChunk(column);
if(!md->is_stats_set()) {
continue;
}
std::shared_ptr<parquet::RowGroupStatistics> stats = md->statistics();
if(op == IsNull) {
rv = stats->null_count() > 0;
} else if(op == IsNotNull) {
rv = stats->num_values() > 0;
}
}