Add negative test case for ordered_array.parquet

Author: vegarsti

datafusion/sqllogictest/test_files/unnest.slt

@@ -1024,6 +1024,23 @@ physical_plan
 03)----ProjectionExec: expr=[column1@0 as __unnest_placeholder(t.column1), column2@1 as column2]
 04)------DataSourceExec: file_groups={1 group: [[WORKSPACE_ROOT/datafusion/sqllogictest/test_files/scratch/unnest/ordered_array.parquet]]}, projection=[column1, column2], output_ordering=[column2@1 ASC NULLS LAST], file_type=parquet
 
+# Explain should have a SortExec at the top because we order by the output of the unnest (i.e. discarding the ordering)
+query TT
+EXPLAIN SELECT UNNEST(column1) as unnested, column2 FROM t ORDER BY 1;
+----
+logical_plan
+01)Sort: unnested ASC NULLS LAST
+02)--Projection: __unnest_placeholder(t.column1,depth=1) AS UNNEST(t.column1) AS unnested, t.column2
+03)----Unnest: lists[__unnest_placeholder(t.column1)|depth=1] structs[]
+04)------Projection: t.column1 AS __unnest_placeholder(t.column1), t.column2
+05)--------TableScan: t projection=[column1, column2]
+physical_plan
+01)SortExec: expr=[unnested@0 ASC NULLS LAST], preserve_partitioning=[false]
+02)--ProjectionExec: expr=[__unnest_placeholder(t.column1,depth=1)@0 as unnested, column2@1 as column2]
+03)----UnnestExec
+04)------ProjectionExec: expr=[column1@0 as __unnest_placeholder(t.column1), column2@1 as column2]
+05)--------DataSourceExec: file_groups={1 group: [[WORKSPACE_ROOT/datafusion/sqllogictest/test_files/scratch/unnest/ordered_array.parquet]]}, projection=[column1, column2], output_ordering=[column2@1 ASC NULLS LAST], file_type=parquet
+
 # cleanup
 statement ok
 drop table t;