Partition Pruning : We are doing a prune when we shouldn't

explain plan for select * from `existing_partition_pruning/lineitempart` where (dir0=1993 and columns[0] >29600) or (dir0=1994 or columns[0]>29700);
| 00-00    Screen
00-01      Project(*=[$0])
00-02        Project(T70¦¦*=[$0])
00-03          SelectionVectorRemover
00-04            Filter(condition=[OR(AND(=($1, 1993), >(ITEM($2, 0), 29600)), =($1, 1994), >(ITEM($2, 0), 29700))])
00-05              Project(T70¦¦*=[$0], dir0=[$1], columns=[$2])
00-06                Scan(groupscan=[ParquetGroupScan [entries=[ReadEntryWithPath [path=/drill/testdata/ctas_auto_partition/existing_partition_pruning/lineitempart/0_0_3.parquet], ReadEntryWithPath [path=/drill/testdata/ctas_auto_partition/existing_partition_pruning/lineitempart/0_0_4.parquet]], selectionRoot=/drill/testdata/ctas_auto_partition/existing_partition_pruning/lineitempart, numFiles=2, columns=[`*`]]])
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