Skip query result from rewritten queries

[ray6080]

Description

Query results from rewritten queries should only be kept as internal one, but not exposed as query result to users.

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 87.46%. Comparing base (2bb28c2) to head (5832a0a).

Files with missing lines	Patch %	Lines
src/include/parser/statement.h	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4633   +/-   ##
=======================================
  Coverage   87.46%   87.46%           
=======================================
  Files        1370     1370           
  Lines       57912    57915    +3     
  Branches     7210     7210           
=======================================
+ Hits        50651    50655    +4     
+ Misses       7092     7091    -1     
  Partials      169      169           

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[github-actions]

Benchmark Result

Master commit hash: 2bb28c28819a081c63229f651b447c7a2653fd54
Branch commit hash: e1aa3d53c267f05e79239444a68afabc2e8ff426

Query Group	Query Name	Mean Time - Commit (ms)	Mean Time - Master (ms)	Diff
aggregation	q24	646.28	654.40	-8.13 (-1.24%)
aggregation	q28	11998.74	12365.31	-366.57 (-2.96%)
filter	q14	126.56	133.10	-6.54 (-4.91%)
filter	q15	124.34	134.69	-10.36 (-7.69%)
filter	q16	303.16	306.93	-3.76 (-1.23%)
filter	q17	446.68	455.36	-8.68 (-1.91%)
filter	q18	1945.29	1936.22	9.08 (0.47%)
filter	zonemap-node	87.30	94.77	-7.47 (-7.88%)
filter	zonemap-node-lhs-cast	86.13	94.88	-8.75 (-9.22%)
filter	zonemap-rel	5702.04	5415.07	286.97 (5.30%)
fixed_size_expr_evaluator	q07	569.04	578.82	-9.79 (-1.69%)
fixed_size_expr_evaluator	q08	802.00	806.06	-4.06 (-0.50%)
fixed_size_expr_evaluator	q09	803.51	809.88	-6.37 (-0.79%)
fixed_size_expr_evaluator	q10	235.40	244.55	-9.14 (-3.74%)
fixed_size_expr_evaluator	q11	227.87	237.48	-9.61 (-4.05%)
fixed_size_expr_evaluator	q12	225.55	233.86	-8.30 (-3.55%)
fixed_size_expr_evaluator	q13	1457.23	1485.24	-28.00 (-1.89%)
fixed_size_seq_scan	q23	108.24	125.00	-16.76 (-13.41%)
join	q29	600.18	639.31	-39.13 (-6.12%)
join	q30	1469.17	1592.03	-122.86 (-7.72%)
join	q31	5.64	4.68	0.95 (20.36%)
join	SelectiveTwoHopJoin	53.44	55.08	-1.64 (-2.99%)
ldbc_snb_ic	q35	2553.62	2663.93	-110.31 (-4.14%)
ldbc_snb_ic	q36	557.33	519.73	37.60 (7.23%)
ldbc_snb_is	q32	3.20	5.78	-2.58 (-44.61%)
ldbc_snb_is	q33	12.84	13.62	-0.78 (-5.74%)
ldbc_snb_is	q34	1.03	1.22	-0.19 (-15.40%)
multi-rel	multi-rel-large-scan	1293.65	1405.14	-111.48 (-7.93%)
multi-rel	multi-rel-lookup	20.71	31.58	-10.87 (-34.43%)
multi-rel	multi-rel-small-scan	91.20	89.21	2.00 (2.24%)
order_by	q25	132.07	137.18	-5.10 (-3.72%)
order_by	q26	450.45	457.64	-7.19 (-1.57%)
order_by	q27	1455.83	1465.38	-9.54 (-0.65%)
recursive_join	recursive-join-bidirection	303.55	286.09	17.46 (6.10%)
recursive_join	recursive-join-dense	7454.52	5568.82	1885.70 (33.86%)
recursive_join	recursive-join-path	24221.14	23972.72	248.43 (1.04%)
recursive_join	recursive-join-sparse	14906.29	14774.18	132.11 (0.89%)
recursive_join	recursive-join-trail	7390.71	6285.52	1105.18 (17.58%)
scan_after_filter	q01	169.17	178.31	-9.14 (-5.13%)
scan_after_filter	q02	154.72	163.58	-8.86 (-5.42%)
shortest_path_ldbc100	q37	84.86	88.54	-3.68 (-4.15%)
shortest_path_ldbc100	q38	371.88	347.84	24.04 (6.91%)
shortest_path_ldbc100	q39	59.43	59.23	0.20 (0.34%)
shortest_path_ldbc100	q40	442.98	454.80	-11.83 (-2.60%)
var_size_expr_evaluator	q03	2060.07	2070.25	-10.19 (-0.49%)
var_size_expr_evaluator	q04	2230.04	2231.07	-1.03 (-0.05%)
var_size_expr_evaluator	q05	2608.53	2617.03	-8.50 (-0.32%)
var_size_expr_evaluator	q06	1350.55	1323.27	27.28 (2.06%)
var_size_seq_scan	q19	1444.64	1451.24	-6.60 (-0.45%)
var_size_seq_scan	q20	2720.13	2368.65	351.49 (14.84%)
var_size_seq_scan	q21	2289.31	2268.49	20.82 (0.92%)
var_size_seq_scan	q22	124.15	127.41	-3.26 (-2.56%)

[andyfengHKU]

Add tests if possible.

[andyfengHKU]

I would call this internal_. And also comment, internal statements are those rewritten from input and whose result should not be rendered on client side.