[WIP] just a demo

[zombee0]

Why I'm doing:

What I'm doing:

Fixes #issue

What type of PR is this:

• [ ] BugFix
• [ ] Feature
• [ ] Enhancement
• [ ] Refactor
• [ ] UT
• [ ] Doc
• [ ] Tool

Does this PR entail a change in behavior?

• [x] Yes, this PR will result in a change in behavior.
• [ ] No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• [ ] Interface/UI changes: syntax, type conversion, expression evaluation, display information
• [ ] Parameter changes: default values, similar parameters but with different default values
• [ ] Policy changes: use new policy to replace old one, functionality automatically enabled
• [ ] Feature removed
• [ ] Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• [ ] I have added test cases for my bug fix or my new feature
• [ ] This pr needs user documentation (for new or modified features or behaviors)
  • [ ] I have added documentation for my new feature or new function
• [ ] This is a backport pr

Bugfix cherry-pick branch check:

• [ ] I have checked the version labels which the pr will be auto-backported to the target branch
  • [ ] 3.3
  • [ ] 3.2
  • [ ] 3.1
  • [ ] 3.0
  • [ ] 2.5

[github-actions[bot]]

[BE Incremental Coverage Report]

:x: fail : 40 / 127 (31.50%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
:large_blue_circle:	src/column/column_visitor_mutable.cpp	0	1	00.00%	[24]
:large_blue_circle:	src/exec/pipeline/chunk_accumulate_operator.cpp	0	1	00.00%	[27]
:large_blue_circle:	src/exec/pipeline/hashjoin/spillable_hash_join_build_operator.cpp	0	1	00.00%	[189]
:large_blue_circle:	src/exec/pipeline/nljoin/spillable_nljoin_build_operator.cpp	0	1	00.00%	[78]
:large_blue_circle:	src/exec/pipeline/set/except_build_sink_operator.cpp	0	1	00.00%	[23]
:large_blue_circle:	src/exec/pipeline/aggregate/spillable_aggregate_blocking_sink_operator.h	0	3	00.00%	[44, 45, 46]
:large_blue_circle:	src/exec/pipeline/sink/export_sink_operator.cpp	0	1	00.00%	[176]
:large_blue_circle:	src/exec/pipeline/chunk_accumulate_operator.h	0	3	00.00%	[37, 38, 39]
:large_blue_circle:	src/exec/pipeline/set/union_passthrough_operator.cpp	0	1	00.00%	[22]
:large_blue_circle:	src/exec/pipeline/sort/partition_sort_sink_operator.cpp	0	1	00.00%	[61]
:large_blue_circle:	src/exec/pipeline/noop_sink_operator.h	0	1	00.00%	[46]
:large_blue_circle:	src/exec/pipeline/sink/mysql_table_sink_operator.cpp	0	1	00.00%	[122]
:large_blue_circle:	src/exec/pipeline/sort/local_partition_topn_sink.cpp	0	1	00.00%	[36]
:large_blue_circle:	src/exec/pipeline/set/except_probe_sink_operator.cpp	0	1	00.00%	[36]
:large_blue_circle:	src/exec/pipeline/set/intersect_probe_sink_operator.cpp	0	1	00.00%	[28]
:large_blue_circle:	src/exec/pipeline/hashjoin/spillable_hash_join_probe_operator.cpp	0	2	00.00%	[187, 190]
:large_blue_circle:	src/exec/pipeline/nljoin/nljoin_build_operator.cpp	0	1	00.00%	[52]
:large_blue_circle:	src/storage/chunk_helper.cpp	0	2	00.00%	[548, 549]
:large_blue_circle:	src/exec/pipeline/aggregate/spillable_aggregate_distinct_blocking_operator.cpp	0	2	00.00%	[90, 94]
:large_blue_circle:	src/exec/aggregator.cpp	0	6	00.00%	[737, 738, 740, 742, 1143, 1144]
:large_blue_circle:	src/exec/pipeline/sink/iceberg_table_sink_operator.cpp	0	1	00.00%	[98]
:large_blue_circle:	src/exec/pipeline/sort/spillable_partition_sort_sink_operator.cpp	0	2	00.00%	[53, 54]
:large_blue_circle:	src/exprs/dictmapping_expr.h	0	1	00.00%	[45]
:large_blue_circle:	src/exec/pipeline/adaptive/collect_stats_source_operator.cpp	0	1	00.00%	[45]
:large_blue_circle:	src/exec/pipeline/aggregate/aggregate_streaming_sink_operator.h	0	1	00.00%	[49]
:large_blue_circle:	src/column/column.h	0	1	00.00%	[84]
:large_blue_circle:	src/exec/pipeline/aggregate/sorted_aggregate_streaming_sink_operator.cpp	0	1	00.00%	[72]
:large_blue_circle:	src/exec/pipeline/hashjoin/hash_join_probe_operator.cpp	0	1	00.00%	[76]
:large_blue_circle:	src/column/column_visitor.cpp	0	1	00.00%	[24]
:large_blue_circle:	src/exec/pipeline/limit_operator.cpp	0	1	00.00%	[26]
:large_blue_circle:	src/exec/pipeline/adaptive/collect_stats_sink_operator.cpp	0	1	00.00%	[49]
:large_blue_circle:	src/exec/pipeline/nljoin/spillable_nljoin_probe_operator.cpp	0	1	00.00%	[213]
:large_blue_circle:	src/exprs/arithmetic_expr.cpp	0	1	00.00%	[274]
:large_blue_circle:	src/exec/pipeline/aggregate/spillable_aggregate_distinct_blocking_operator.h	0	3	00.00%	[45, 46, 47]
:large_blue_circle:	src/exec/pipeline/dict_decode_operator.cpp	0	1	00.00%	[37]
:large_blue_circle:	src/exec/pipeline/aggregate/spillable_aggregate_blocking_sink_operator.cpp	0	1	00.00%	[115]
:large_blue_circle:	src/exec/pipeline/hash_partition_sink_operator.cpp	0	1	00.00%	[29]
:large_blue_circle:	src/exec/pipeline/exchange/exchange_sink_operator.cpp	0	1	00.00%	[485]
:large_blue_circle:	src/exec/pipeline/set/intersect_build_sink_operator.cpp	0	1	00.00%	[23]
:large_blue_circle:	src/column/column_helper.h	0	12	00.00%	[129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 141, 144]
:large_blue_circle:	src/exec/pipeline/aggregate/aggregate_distinct_streaming_sink_operator.cpp	0	1	00.00%	[66]
:large_blue_circle:	src/exec/pipeline/olap_table_sink_operator.cpp	0	1	00.00%	[138]
:large_blue_circle:	src/exprs/java_function_call_expr.cpp	0	1	00.00%	[100]
:large_blue_circle:	src/exec/pipeline/project_operator.cpp	0	1	00.00%	[40]
:large_blue_circle:	src/exprs/info_func.cpp	0	1	00.00%	[41]
:large_blue_circle:	src/exec/pipeline/aggregate/aggregate_streaming_sink_operator.cpp	0	1	00.00%	[69]
:large_blue_circle:	src/exprs/cast_expr.h	0	4	00.00%	[105, 127, 148, 167]
:large_blue_circle:	src/exprs/clone_expr.h	0	1	00.00%	[30]
:large_blue_circle:	src/exprs/placeholder_ref.cpp	0	1	00.00%	[22]
:large_blue_circle:	src/exec/pipeline/table_function_operator.cpp	0	1	00.00%	[139]
:large_blue_circle:	src/exec/pipeline/aggregate/aggregate_distinct_streaming_sink_operator.h	0	1	00.00%	[50]
:large_blue_circle:	src/exec/pipeline/assert_num_rows_operator.cpp	0	1	00.00%	[58]
:large_blue_circle:	src/exec/pipeline/select_operator.cpp	0	1	00.00%	[87]
:large_blue_circle:	src/exprs/in_const_predicate.hpp	1	3	33.33%	[291, 328]
:large_blue_circle:	src/exprs/cast_expr_array.cpp	1	2	50.00%	[253]
:large_blue_circle:	src/exprs/cast_nested.cpp	2	3	66.67%	[68]
:large_blue_circle:	src/exprs/binary_predicate.cpp	2	3	66.67%	[237]
:large_blue_circle:	src/exprs/case_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/map_apply_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/map_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exec/stream/aggregate/stream_aggregate_operator.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/cast_expr.cpp	2	2	100.00%	[]
:large_blue_circle:	src/column/chunk.h	2	2	100.00%	[]
:large_blue_circle:	src/exec/query_cache/multilane_operator.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exec/pipeline/source_operator.h	1	1	100.00%	[]
:large_blue_circle:	src/exec/pipeline/exchange/local_exchange_sink_operator.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/array_element_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/array_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/column/nullable_column.h	1	1	100.00%	[]
:large_blue_circle:	src/exprs/condition_expr.cpp	4	4	100.00%	[]
:large_blue_circle:	src/exprs/array_map_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/literal.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/is_null_predicate.cpp	1	1	100.00%	[]
:large_blue_circle:	src/exprs/map_element_expr.cpp	1	1	100.00%	[]
:large_blue_circle:	src/formats/parquet/encoding_dict.h	4	4	100.00%	[]
:large_blue_circle:	src/column/chunk.cpp	7	7	100.00%	[]
:large_blue_circle:	src/exprs/column_ref.cpp	1	1	100.00%	[]

[github-actions[bot]]

[FE Incremental Coverage Report]

:white_check_mark: pass : 0 / 0 (0%)