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@cambyzju cambyzju commented Dec 24, 2025

What problem does this PR solve?

Usage Example:

> select * from test_pk@ro where user_id=9820660;
+---------+----------+
| user_id | behavior |
+---------+----------+
| 9820660 | hello    |
+---------+----------+
  • When there are overlapping key ranges in Paimon Primary Key table, we cannot use native reader:
> explain verbose select * from test_pk where user_id=9820660;
+------------------------------------------------------------------------------------------------------------------------+
| Explain String(Nereids Planner)                                                                                        |
+------------------------------------------------------------------------------------------------------------------------+
| PLAN FRAGMENT 0                                                                                                        |
|   OUTPUT EXPRS:                                                                                                        |
|     user_id[#0]                                                                                                        |
|     behavior[#1]                                                                                                       |
|   PARTITION: UNPARTITIONED                                                                                             |
|                                                                                                                        |
|   HAS_COLO_PLAN_NODE: false                                                                                            |
|                                                                                                                        |
|   VRESULT SINK                                                                                                         |
|      MYSQL_PROTOCAL                                                                                                    |
|                                                                                                                        |
|   1:VEXCHANGE                                                                                                          |
|      offset: 0                                                                                                         |
|      distribute expr lists:                                                                                            |
|      tuple ids: 0                                                                                                      |
|                                                                                                                        |
| PLAN FRAGMENT 1                                                                                                        |
|                                                                                                                        |
|   PARTITION: RANDOM                                                                                                    |
|                                                                                                                        |
|   HAS_COLO_PLAN_NODE: false                                                                                            |
|                                                                                                                        |
|   STREAM DATA SINK                                                                                                     |
|     EXCHANGE ID: 01                                                                                                    |
|     UNPARTITIONED                                                                                                      |
|                                                                                                                        |
|   0:VPAIMON_SCAN_NODE(79)                                                                                              |
|      table: paimon_on_s3.db_paimon.test_pk                                                                             |
|      predicates: (user_id[#0] = 9820660)                                                                               |
|      inputSplitNum=1, totalFileSize=0, scanRanges=1                                                                    |
|      partition=1/0                                                                                                     |
|      backends:                                                                                                         |
|        1754986988417                                                                                                   |
|          /data-0891318b-4e3b-42b5-b85c-3bc8e9b8cc45-0.parquet start: 0 length: 0                                       |
|      cardinality=1001, numNodes=1                                                                                      |
|      pushdown agg=NONE                                                                                                 |
|      paimonNativeReadSplits=0/1                                                                                        |
|      predicatesFromPaimon:                                                                                             |
|           Equal(user_id, 9820660)                                                                                      |
|      PaimonTable: test_pk                                                                                              |
|      PaimonSplitStats:                                                                                                 |
|        SplitStat [type=JNI, rowCount=1001, mergedRowCount=NONE, rawFileConvertable=false, hasDeletionVector=false]     |
|      tuple ids: 0                                                                                                      |
|                                                                                                                        |
| Tuples:                                                                                                                |
| TupleDescriptor{id=0, tbl=test_pk}                                                                                     |
|   SlotDescriptor{id=0, col=user_id, colUniqueId=0, type=bigint, nullable=true, isAutoIncrement=false, subColPath=null} |
|   SlotDescriptor{id=1, col=behavior, colUniqueId=1, type=text, nullable=true, isAutoIncrement=false, subColPath=null}  |
|                                                                                                                        |
|                                                                                                                        |
|                                                                                                                        |
|                                                                                                                        |
| ========== STATISTICS ==========                                                                                       |
| planed with unknown column statistics                                                                                  |
+------------------------------------------------------------------------------------------------------------------------+
  • But if we try to read ro table, we could use the Native reader with some data latency:
> explain verbose select * from test_pk@ro where user_id=9820660;
+--------------------------------------------------------------------------------------------------------------------------------------+
| Explain String(Nereids Planner)                                                                                                      |
+--------------------------------------------------------------------------------------------------------------------------------------+
| PLAN FRAGMENT 0                                                                                                                      |
|   OUTPUT EXPRS:                                                                                                                      |
|     user_id[#0]                                                                                                                      |
|     behavior[#1]                                                                                                                     |
|   PARTITION: UNPARTITIONED                                                                                                           |
|                                                                                                                                      |
|   HAS_COLO_PLAN_NODE: false                                                                                                          |
|                                                                                                                                      |
|   VRESULT SINK                                                                                                                       |
|      MYSQL_PROTOCAL                                                                                                                  |
|                                                                                                                                      |
|   1:VEXCHANGE                                                                                                                        |
|      offset: 0                                                                                                                       |
|      distribute expr lists:                                                                                                          |
|      tuple ids: 0                                                                                                                    |
|                                                                                                                                      |
| PLAN FRAGMENT 1                                                                                                                      |
|                                                                                                                                      |
|   PARTITION: RANDOM                                                                                                                  |
|                                                                                                                                      |
|   HAS_COLO_PLAN_NODE: false                                                                                                          |
|                                                                                                                                      |
|   STREAM DATA SINK                                                                                                                   |
|     EXCHANGE ID: 01                                                                                                                  |
|     UNPARTITIONED                                                                                                                    |
|                                                                                                                                      |
|   0:VPAIMON_SCAN_NODE(79)                                                                                                            |
|      table: paimon_on_s3.db_paimon.test_pk                                                                                           |
|      predicates: (user_id[#0] = 9820660)                                                                                             |
|      inputSplitNum=1, totalFileSize=519490, scanRanges=1                                                                             |
|      partition=1/0                                                                                                                   |
|      backends:                                                                                                                       |
|        1754986988417                                                                                                                 |
|          s3://warehouse/wh/db_paimon.db/test_pk/bucket-0/data-1ae9ee1e-e6aa-4594-9506-75b6b6ad3820-0.parquet start: 0 length: 519490 |
|      cardinality=1001, numNodes=1                                                                                                    |
|      pushdown agg=NONE                                                                                                               |
|      paimonNativeReadSplits=1/1                                                                                                      |
|      predicatesFromPaimon:                                                                                                           |
|           Equal(user_id, 9820660)                                                                                                    |
|      PaimonTable: test_pk$ro                                                                                                         |
|      PaimonSplitStats:                                                                                                               |
|        SplitStat [type=NATIVE, rowCount=1000, mergedRowCount=NONE, rawFileConvertable=true, hasDeletionVector=false]                 |
|      tuple ids: 0                                                                                                                    |
|                                                                                                                                      |
| Tuples:                                                                                                                              |
| TupleDescriptor{id=0, tbl=test_pk}                                                                                                   |
|   SlotDescriptor{id=0, col=user_id, colUniqueId=0, type=bigint, nullable=true, isAutoIncrement=false, subColPath=null}               |
|   SlotDescriptor{id=1, col=behavior, colUniqueId=1, type=text, nullable=true, isAutoIncrement=false, subColPath=null}                |
|                                                                                                                                      |
|                                                                                                                                      |
|                                                                                                                                      |
|                                                                                                                                      |
| ========== STATISTICS ==========                                                                                                     |
| planed with unknown column statistics                                                                                                |
+--------------------------------------------------------------------------------------------------------------------------------------+

Release note

None

Check List (For Author)

  • Test

    • Regression test
    • Unit Test
    • Manual test (add detailed scripts or steps below)
    • No need to test or manual test. Explain why:
      • This is a refactor/code format and no logic has been changed.
      • Previous test can cover this change.
      • No code files have been changed.
      • Other reason
  • Behavior changed:

    • No.
    • Yes.
  • Does this need documentation?

    • No.
    • Yes.

Check List (For Reviewer who merge this PR)

  • Confirm the release note
  • Confirm test cases
  • Confirm document
  • Add branch pick label

@hello-stephen
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Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

  1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
  2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
  3. What features were added. Why was this function added?
  4. Which code was refactored and why was this part of the code refactored?
  5. Which functions were optimized and what is the difference before and after the optimization?

@cambyzju cambyzju marked this pull request as draft December 24, 2025 12:00
@cambyzju cambyzju force-pushed the paimon-ro-dev-master branch from a1fdae4 to e3d1431 Compare December 25, 2025 13:53
@cambyzju cambyzju marked this pull request as ready for review December 25, 2025 13:54
@cambyzju
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run buildall

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Pull request overview

This PR adds support for reading Paimon read-optimized (RO) system tables, which allows users to query fully compacted data without overlapping key ranges, enabling the use of native readers for better performance.

Key Changes:

  • Introduces @ro syntax for accessing Paimon read-optimized system tables
  • Adds validation to ensure @ro is used without parameters
  • Implements RO table handling in PaimonExternalTable by fetching the "ro" system table variant

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file
File Description
DorisParser.g4 Modified grammar to make parentheses optional for scan parameters, enabling @ro syntax without parentheses
TableScanParams.java Added RO constant, validation logic, and isRo() method to support read-optimized table parameter
PaimonExternalTable.java Implemented RO table snapshot retrieval logic following the same pattern as branch handling
PaimonScanNode.java Added table name (including $ro suffix) to explain output for better query visibility
test_paimon_ro_read.groovy Added comprehensive test verifying RO read behavior and error handling for invalid parameter usage
test_paimon_ro_read.out Expected test output showing difference between normal and RO reads
run10.sql Test data setup script creating a Paimon table with compacted and delta data

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@doris-robot
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TPC-H: Total hot run time: 35565 ms
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit e3d143133d46ea81899bff8cebfac0b09985296c, data reload: false

------ Round 1 ----------------------------------
q1	17652	4208	4051	4051
q2	2023	353	237	237
q3	10178	1363	780	780
q4	10236	944	324	324
q5	7530	2170	2087	2087
q6	192	175	142	142
q7	1023	846	722	722
q8	9380	1474	1212	1212
q9	7188	5395	5365	5365
q10	6846	2422	1993	1993
q11	541	341	314	314
q12	689	753	564	564
q13	17785	3737	3068	3068
q14	289	312	267	267
q15	606	520	509	509
q16	733	686	646	646
q17	722	866	489	489
q18	7514	7105	7122	7105
q19	1102	989	610	610
q20	409	377	248	248
q21	4366	3896	3931	3896
q22	1073	1008	936	936
Total cold run time: 108077 ms
Total hot run time: 35565 ms

----- Round 2, with runtime_filter_mode=off -----
q1	4139	4064	4025	4025
q2	348	395	320	320
q3	2159	2669	2319	2319
q4	1359	1774	1292	1292
q5	4324	4854	4731	4731
q6	231	180	142	142
q7	2117	1960	1912	1912
q8	3005	2632	2586	2586
q9	7835	7704	7384	7384
q10	3115	3325	2863	2863
q11	620	535	511	511
q12	687	755	604	604
q13	3589	3981	3335	3335
q14	301	302	301	301
q15	572	519	505	505
q16	656	702	655	655
q17	1223	1472	1514	1472
q18	8080	7656	7583	7583
q19	925	934	944	934
q20	2015	2055	1922	1922
q21	4941	4654	4260	4260
q22	1076	994	980	980
Total cold run time: 53317 ms
Total hot run time: 50636 ms

@doris-robot
Copy link

TPC-DS: Total hot run time: 180031 ms
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit e3d143133d46ea81899bff8cebfac0b09985296c, data reload: false

query5	4429	606	475	475
query6	366	245	259	245
query7	4229	477	274	274
query8	309	260	257	257
query9	8774	2546	2553	2546
query10	529	394	333	333
query11	15637	14936	14903	14903
query12	177	123	116	116
query13	1276	521	395	395
query14	5769	3054	2788	2788
query14_1	2794	2706	2705	2705
query15	237	202	183	183
query16	848	457	492	457
query17	1178	738	620	620
query18	2446	450	359	359
query19	236	234	215	215
query20	123	120	118	118
query21	227	146	123	123
query22	3905	3845	3948	3845
query23	16825	16191	16086	16086
query23_1	16057	16075	15965	15965
query24	7353	1683	1241	1241
query24_1	1250	1287	1280	1280
query25	597	513	468	468
query26	1272	273	168	168
query27	2754	473	307	307
query28	4488	2131	2106	2106
query29	861	580	478	478
query30	318	248	216	216
query31	811	751	649	649
query32	78	72	69	69
query33	533	340	289	289
query34	912	953	541	541
query35	767	813	714	714
query36	858	909	820	820
query37	138	93	81	81
query38	2981	3065	3037	3037
query39	770	757	736	736
query39_1	701	719	709	709
query40	228	141	125	125
query41	69	67	64	64
query42	114	111	111	111
query43	439	440	402	402
query44	1329	753	736	736
query45	190	190	183	183
query46	891	990	616	616
query47	1663	1724	1633	1633
query48	334	333	250	250
query49	621	441	357	357
query50	660	296	217	217
query51	3827	3828	3786	3786
query52	110	109	100	100
query53	322	358	303	303
query54	287	251	242	242
query55	77	72	73	72
query56	294	296	294	294
query57	1170	1143	1101	1101
query58	276	255	247	247
query59	2397	2484	2356	2356
query60	326	311	296	296
query61	164	162	165	162
query62	771	697	687	687
query63	333	297	313	297
query64	5128	1295	992	992
query65	4006	3946	3994	3946
query66	1512	443	331	331
query67	15415	15018	14907	14907
query68	8409	1000	721	721
query69	516	351	306	306
query70	1072	996	948	948
query71	381	329	285	285
query72	6087	5041	4988	4988
query73	679	598	311	311
query74	8933	8983	8813	8813
query75	3267	3151	2832	2832
query76	3901	1156	758	758
query77	626	394	307	307
query78	9419	9409	8876	8876
query79	1640	871	619	619
query80	725	664	550	550
query81	505	273	233	233
query82	484	127	101	101
query83	297	262	243	243
query84	294	119	102	102
query85	971	508	452	452
query86	344	311	270	270
query87	3180	3218	3088	3088
query88	4174	2295	2293	2293
query89	487	426	392	392
query90	2168	158	160	158
query91	170	169	147	147
query92	81	69	68	68
query93	1443	907	557	557
query94	477	319	295	295
query95	581	386	316	316
query96	600	470	208	208
query97	2314	2320	2225	2225
query98	209	192	196	192
query99	1379	1386	1322	1322
Total cold run time: 262807 ms
Total hot run time: 180031 ms

@doris-robot
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ClickBench: Total hot run time: 27.61 s
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit e3d143133d46ea81899bff8cebfac0b09985296c, data reload: false

query1	0.06	0.05	0.05
query2	0.10	0.05	0.04
query3	0.26	0.09	0.09
query4	1.60	0.11	0.11
query5	0.28	0.26	0.26
query6	1.18	0.65	0.63
query7	0.03	0.03	0.03
query8	0.05	0.04	0.04
query9	0.56	0.49	0.51
query10	0.55	0.56	0.53
query11	0.16	0.12	0.11
query12	0.14	0.12	0.11
query13	0.60	0.60	0.61
query14	0.99	0.97	0.98
query15	0.81	0.79	0.81
query16	0.39	0.38	0.39
query17	1.05	1.04	1.05
query18	0.23	0.22	0.22
query19	1.87	1.81	1.84
query20	0.02	0.01	0.02
query21	15.48	0.29	0.14
query22	6.04	0.05	0.05
query23	15.94	0.28	0.10
query24	1.52	0.55	0.56
query25	0.11	0.10	0.08
query26	0.14	0.14	0.13
query27	0.08	0.05	0.06
query28	4.90	1.22	1.02
query29	12.65	4.00	3.25
query30	0.29	0.14	0.12
query31	2.82	0.62	0.39
query32	3.23	0.55	0.46
query33	3.05	3.03	3.10
query34	16.84	5.17	4.52
query35	4.57	4.58	4.61
query36	0.67	0.51	0.48
query37	0.12	0.07	0.06
query38	0.07	0.04	0.04
query39	0.05	0.03	0.03
query40	0.19	0.14	0.14
query41	0.08	0.03	0.03
query42	0.05	0.03	0.02
query43	0.04	0.04	0.03
Total cold run time: 99.86 s
Total hot run time: 27.61 s

@hello-stephen
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FE Regression Coverage Report

Increment line coverage 0.00% (0/18) 🎉
Increment coverage report
Complete coverage report

@cambyzju
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run buildall

@doris-robot
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TPC-H: Total hot run time: 35864 ms
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit e1a09485c65826631b1f0971441d45ccc106a758, data reload: false

------ Round 1 ----------------------------------
q1	17611	4219	4044	4044
q2	2018	361	243	243
q3	10189	1306	729	729
q4	10209	810	311	311
q5	7533	2140	1879	1879
q6	185	170	139	139
q7	1007	848	717	717
q8	9352	1387	1146	1146
q9	6923	5327	5339	5327
q10	6850	2380	1994	1994
q11	545	342	325	325
q12	661	715	585	585
q13	17784	3651	2980	2980
q14	294	294	271	271
q15	583	516	521	516
q16	690	684	621	621
q17	697	833	514	514
q18	7735	7483	7850	7483
q19	1218	1058	616	616
q20	423	369	254	254
q21	4534	4238	4136	4136
q22	1147	1070	1034	1034
Total cold run time: 108188 ms
Total hot run time: 35864 ms

----- Round 2, with runtime_filter_mode=off -----
q1	4606	4204	4297	4204
q2	312	440	327	327
q3	2340	3016	2459	2459
q4	1397	1918	1456	1456
q5	4601	4373	4517	4373
q6	217	169	129	129
q7	2028	1873	1815	1815
q8	2853	2473	2472	2472
q9	7481	7488	7298	7298
q10	2927	3085	2673	2673
q11	601	518	509	509
q12	664	689	576	576
q13	3280	3615	3018	3018
q14	265	287	256	256
q15	535	492	488	488
q16	602	646	605	605
q17	1119	1405	1332	1332
q18	7376	7055	7210	7055
q19	827	774	792	774
q20	1914	1961	1851	1851
q21	4602	4391	4194	4194
q22	1049	1022	986	986
Total cold run time: 51596 ms
Total hot run time: 48850 ms

@doris-robot
Copy link

TPC-DS: Total hot run time: 180298 ms
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit e1a09485c65826631b1f0971441d45ccc106a758, data reload: false

query5	5180	571	444	444
query6	326	229	213	213
query7	4222	454	275	275
query8	299	258	230	230
query9	8743	2538	2516	2516
query10	545	352	321	321
query11	15377	14964	14807	14807
query12	173	123	122	122
query13	1272	473	400	400
query14	6138	2952	2686	2686
query14_1	2602	2572	2578	2572
query15	215	191	173	173
query16	799	472	443	443
query17	1078	693	565	565
query18	2457	429	329	329
query19	226	226	200	200
query20	121	116	112	112
query21	225	139	124	124
query22	4086	4063	4123	4063
query23	16617	16377	16227	16227
query23_1	16158	16438	16449	16438
query24	7367	1669	1256	1256
query24_1	1237	1237	1216	1216
query25	572	498	441	441
query26	1247	271	167	167
query27	2734	471	304	304
query28	4483	2106	2131	2106
query29	827	566	481	481
query30	318	245	221	221
query31	815	701	633	633
query32	79	76	68	68
query33	570	336	319	319
query34	887	891	538	538
query35	780	801	721	721
query36	849	935	854	854
query37	130	91	81	81
query38	3012	3074	2962	2962
query39	767	750	763	750
query39_1	711	742	704	704
query40	230	149	129	129
query41	76	70	66	66
query42	112	107	106	106
query43	418	446	405	405
query44	1321	753	741	741
query45	191	191	185	185
query46	884	971	608	608
query47	1706	1778	1670	1670
query48	327	326	245	245
query49	644	450	364	364
query50	661	300	227	227
query51	3809	3861	3807	3807
query52	114	109	99	99
query53	321	357	299	299
query54	300	270	259	259
query55	76	78	74	74
query56	297	310	321	310
query57	1193	1174	1104	1104
query58	281	256	266	256
query59	2463	2462	2473	2462
query60	365	308	296	296
query61	166	150	163	150
query62	710	711	640	640
query63	326	286	295	286
query64	4948	1267	978	978
query65	4028	3926	3967	3926
query66	1448	471	323	323
query67	15355	15255	14928	14928
query68	8428	993	698	698
query69	503	344	318	318
query70	1089	1030	975	975
query71	363	311	287	287
query72	6118	4984	5141	4984
query73	705	651	306	306
query74	8959	8917	8739	8739
query75	3195	3164	2768	2768
query76	3870	1140	737	737
query77	517	394	292	292
query78	9512	9642	8901	8901
query79	1755	836	606	606
query80	709	653	558	558
query81	514	271	233	233
query82	195	130	104	104
query83	260	258	243	243
query84	258	122	110	110
query85	932	500	449	449
query86	378	313	286	286
query87	3205	3154	3225	3154
query88	3244	2276	2264	2264
query89	457	435	397	397
query90	2165	159	159	159
query91	174	167	143	143
query92	75	68	65	65
query93	1388	885	550	550
query94	464	281	276	276
query95	567	373	302	302
query96	588	463	208	208
query97	2241	2340	2255	2255
query98	219	194	195	194
query99	1325	1405	1291	1291
Total cold run time: 261201 ms
Total hot run time: 180298 ms

@doris-robot
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ClickBench: Total hot run time: 27.2 s
machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit e1a09485c65826631b1f0971441d45ccc106a758, data reload: false

query1	0.05	0.04	0.05
query2	0.10	0.05	0.05
query3	0.26	0.08	0.08
query4	1.61	0.12	0.11
query5	0.27	0.25	0.24
query6	1.18	0.65	0.65
query7	0.03	0.03	0.02
query8	0.05	0.04	0.04
query9	0.56	0.51	0.50
query10	0.55	0.56	0.55
query11	0.16	0.10	0.10
query12	0.15	0.12	0.12
query13	0.61	0.60	0.60
query14	0.98	0.98	0.97
query15	0.83	0.80	0.81
query16	0.39	0.39	0.39
query17	1.02	1.00	1.03
query18	0.23	0.22	0.21
query19	1.93	1.88	1.80
query20	0.02	0.01	0.01
query21	15.44	0.29	0.14
query22	4.66	0.05	0.05
query23	15.96	0.28	0.11
query24	1.80	0.58	0.20
query25	0.08	0.08	0.05
query26	0.14	0.13	0.13
query27	0.07	0.06	0.08
query28	4.53	1.24	1.03
query29	12.62	3.92	3.26
query30	0.27	0.14	0.11
query31	2.81	0.62	0.40
query32	3.23	0.56	0.44
query33	2.96	3.00	3.00
query34	17.03	5.15	4.54
query35	4.60	4.55	4.59
query36	0.66	0.50	0.49
query37	0.11	0.07	0.07
query38	0.08	0.04	0.04
query39	0.05	0.04	0.03
query40	0.16	0.14	0.14
query41	0.09	0.03	0.03
query42	0.04	0.02	0.02
query43	0.05	0.03	0.04
Total cold run time: 98.42 s
Total hot run time: 27.2 s

@hello-stephen
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FE Regression Coverage Report

Increment line coverage 0.00% (0/18) 🎉
Increment coverage report
Complete coverage report

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