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new 81ac747fd77 [fix](nereids) fix calc repeat property stack overflow
(#52159)
81ac747fd77 is described below
commit 81ac747fd77ee55dcadf30639a742fe7c048aedb
Author: yujun <[email protected]>
AuthorDate: Tue Jun 24 12:16:22 2025 +0800
[fix](nereids) fix calc repeat property stack overflow (#52159)
### What problem does this PR solve?
Guava Sets.intersection will return a SetView, then for chain call
Sets.intersection like below code:
List<Set<>> B;
Set<> A = B.get(0);
for (int i = 1; i < B.size(); i++) {
A = Sets.intersection(A, B.get(i));
}
Then A is a recursive SetViews, A = SetView(SetView(SetView(B0 interset
B1) interset B2) ... interset Bn).
Then when access A, it will call recursive deeply the multiple SetView's
relate functions.
For example, when call A.isEmpty(), its call stack will be like
java.lang.StackOverflowError: null
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
...
if the stack is deep, it then throw StackOverflowError.
So for the long chain set intersection, need to eliminate the SetView,
and convert it to a Set.
---
.../properties/ChildOutputPropertyDeriver.java | 5 +-
.../doris/nereids/trees/plans/algebra/Repeat.java | 4 +-
.../nereids_p0/test_repeat_no_stackflow.groovy | 429 +++++++++++++++++++++
3 files changed, 433 insertions(+), 5 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/properties/ChildOutputPropertyDeriver.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/properties/ChildOutputPropertyDeriver.java
index ef89c327605..98a8e7af2dc 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/properties/ChildOutputPropertyDeriver.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/properties/ChildOutputPropertyDeriver.java
@@ -368,9 +368,8 @@ public class ChildOutputPropertyDeriver extends
PlanVisitor<PhysicalProperties,
if (!groupingSets.isEmpty()) {
Set<Expression> intersectGroupingKeys =
Utils.fastToImmutableSet(groupingSets.get(0));
for (int i = 1; i < groupingSets.size() &&
!intersectGroupingKeys.isEmpty(); i++) {
- intersectGroupingKeys = Sets.intersection(
- intersectGroupingKeys,
Utils.fastToImmutableSet(groupingSets.get(i))
- );
+ intersectGroupingKeys =
Sets.intersection(intersectGroupingKeys,
+
Utils.fastToImmutableSet(groupingSets.get(i))).immutableCopy();
}
List<ExprId> orderedShuffledColumns =
distributionSpecHash.getOrderedShuffledColumns();
Set<ExprId> intersectGroupingKeysId = new HashSet<>();
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/algebra/Repeat.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/algebra/Repeat.java
index 8925e597850..06a1c7d47ff 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/algebra/Repeat.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/algebra/Repeat.java
@@ -111,8 +111,8 @@ public interface Repeat<CHILD_PLAN extends Plan> extends
Aggregate<CHILD_PLAN> {
Iterator<List<Expression>> iterator = groupingSets.iterator();
Set<Expression> commonGroupingExpressions =
Sets.newLinkedHashSet(iterator.next());
while (iterator.hasNext()) {
- commonGroupingExpressions =
- Sets.intersection(commonGroupingExpressions,
Sets.newLinkedHashSet(iterator.next()));
+ commonGroupingExpressions =
Sets.intersection(commonGroupingExpressions,
+ Sets.newLinkedHashSet(iterator.next())).immutableCopy();
if (commonGroupingExpressions.isEmpty()) {
break;
}
diff --git a/regression-test/suites/nereids_p0/test_repeat_no_stackflow.groovy
b/regression-test/suites/nereids_p0/test_repeat_no_stackflow.groovy
new file mode 100644
index 00000000000..2e045237131
--- /dev/null
+++ b/regression-test/suites/nereids_p0/test_repeat_no_stackflow.groovy
@@ -0,0 +1,429 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite('test_repeat_no_stackflow') {
+ multi_sql '''
+ SET disable_nereids_rules="PRUNE_EMPTY_PARTITION";
+
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t1 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t2 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t3 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t4 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t5 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t6 FORCE;
+
+ CREATE TABLE `test_repeat_no_stackflow_t1` (
+ `id` int NOT NULL,
+ `agent_id` int NOT NULL,
+ `site_id` int NULL ,
+ `tdate` varchar(255) NOT NULL ,
+ `money` decimal(32,3) NOT NULL DEFAULT "0.000" ,
+ `monies` decimal(13,3) NOT NULL DEFAULT "0.000" ,
+ `account` decimal(13,3) NOT NULL DEFAULT "0.000" ,
+ `reward_cost` decimal(13,3) NOT NULL DEFAULT "0.000" ,
+ `finance_cost` decimal(13,3) NOT NULL DEFAULT "0.000" ,
+ `ad_type` tinyint NOT NULL ,
+ `agent_type` tinyint NULL ,
+ `pay_type` tinyint NOT NULL ,
+ `pay_date` varchar(255) NOT NULL,
+ `memo` text NULL,
+ `aorder` varchar(20) NULL,
+ `plat_id` tinyint NOT NULL DEFAULT "1",
+ `game_id` int NOT NULL DEFAULT "0",
+ `add_type` tinyint NOT NULL DEFAULT "0" ,
+ `company_id` tinyint NOT NULL DEFAULT "0",
+ `nature` tinyint NOT NULL DEFAULT "0" ,
+ `s_date` varchar(255) NOT NULL ,
+ `e_date` varchar(255) NOT NULL ,
+ `author` varchar(50) NULL ,
+ `game_sign` varchar(64) NOT NULL DEFAULT "" ,
+ `agent` varchar(64) NOT NULL DEFAULT "" ,
+ `media` varchar(64) NOT NULL DEFAULT "" ,
+ `company` varchar(16) NOT NULL DEFAULT "" ,
+ `company_type` varchar(16) NOT NULL DEFAULT "self" ,
+ `other` tinyint NOT NULL DEFAULT "0" ,
+ `is_delete` tinyint NOT NULL DEFAULT "0" ,
+ `created_at` varchar(255) NOT NULL,
+ `updated_at` varchar(255) NOT NULL
+) ENGINE=OLAP
+UNIQUE KEY(`id`)
+DISTRIBUTED BY HASH(`id`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+
+CREATE TABLE `test_repeat_no_stackflow_t2` (
+ `uid` varchar(255) NULL ,
+ `game_sign` varchar(255) NULL ,
+ `register_date` date NOT NULL ,
+ `agent_id` varchar(255) NULL ,
+ `site_id` varchar(255) NULL ,
+ `game_id` varchar(255) NULL ,
+ `guid` varchar(255) NOT NULL ,
+ `openid` text NULL,
+ `mobile_phone` varchar(255) NULL ,
+ `user_name` varchar(255) NULL ,
+ `imei` text NULL ,
+ `long_id` varchar(255) NULL ,
+ `mtype` varchar(30) NULL ,
+ `package` varchar(255) NULL ,
+ `reg_time` varchar(255) NULL ,
+ `logined` varchar(30) NULL ,
+ `reg_type` varchar(30) NULL ,
+ `os` varchar(20) NULL ,
+ `game_aweme_id` varchar(255) NULL ,
+ `match_type` varchar(30) NULL ,
+ `network` varchar(255) NULL ,
+ `idfv` text NULL ,
+ `system` varchar(255) NULL ,
+ `model` varchar(255) NULL ,
+ `come_back_user` varchar(10) NULL ,
+ `ip` varchar(255) NULL ,
+ `ipv6` varchar(255) NULL ,
+ `oaid` varchar(255) NULL ,
+ `adinfo` text NULL ,
+ `ad_device` text NULL ,
+ `wx_platform` varchar(255) NULL ,
+ `original_imei` varchar(255) NULL ,
+ `total_reg_num` varchar(255) NULL ,
+ `reg_hour` varchar(10) NOT NULL ,
+ `reg_date_hour` varchar(128) NOT NULL
+) ENGINE=OLAP
+UNIQUE KEY(`uid`, `game_sign`, `register_date`)
+DISTRIBUTED BY HASH(`uid`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+
+CREATE TABLE `test_repeat_no_stackflow_t3` (
+ `id` int NOT NULL,
+ `site_id` int NOT NULL DEFAULT "0" ,
+ `site_name` varchar(255) NOT NULL DEFAULT "" ,
+ `agent_id` int NOT NULL,
+ `plat` tinyint NOT NULL DEFAULT "0" ,
+ `plat_id` tinyint NOT NULL DEFAULT "1" ,
+ `chargeman` varchar(128) NOT NULL DEFAULT "" ,
+ `site_url` varchar(128) NULL DEFAULT "" ,
+ `https` tinyint NULL DEFAULT "0" ,
+ `channel` varchar(60) NOT NULL DEFAULT "" ,
+ `addtime` datetime NULL,
+ `edittime` datetime NULL,
+ `isdel` tinyint NOT NULL DEFAULT "0" ,
+ `is_remote` tinyint NOT NULL DEFAULT "0" ,
+ `convert_source_type` varchar(128) NOT NULL DEFAULT "" ,
+ `convert_toolkit` varchar(128) NOT NULL DEFAULT "" ,
+ `anchor_id` int NOT NULL DEFAULT "0" ,
+ `anchor_account` varchar(128) NOT NULL DEFAULT "" ,
+ `anchor_account_id` int NOT NULL DEFAULT "0" ,
+ `create_user` varchar(128) NULL DEFAULT "" ,
+ `update_user` varchar(128) NULL DEFAULT "" ,
+ `action_track_type` int NULL DEFAULT "0"
+) ENGINE=OLAP
+UNIQUE KEY(`id`)
+DISTRIBUTED BY HASH(`id`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+
+CREATE TABLE `test_repeat_no_stackflow_t4` (
+ `id` varchar(255) NULL ,
+ `agent_id` varchar(255) NULL ,
+ `agent_name` varchar(255) NULL ,
+ `group` varchar(255) NULL ,
+ `media` varchar(255) NULL ,
+ `agent` varchar(255) NULL ,
+ `plat_id` varchar(10) NULL ,
+ `reg_date` varchar(64) NULL ,
+ `chargeman` varchar(128) NULL ,
+ `agent_type` varchar(32) NULL ,
+ `department_id` varchar(255) NULL ,
+ `gr_agent_channel` varchar(64) NULL ,
+ `channel_client` varchar(64) NULL ,
+ `account_id` varchar(100) NULL ,
+ `top` varchar(10) NULL ,
+ `activity_at` varchar(64) NULL ,
+ `updated_time` varchar(64) NULL ,
+ `is_tw` varchar(10) NULL ,
+ `system` varchar(32) NULL ,
+ `subject` varchar(32) NULL ,
+ `gr_agent_remarks` text NULL ,
+ `agent_media_name` varchar(64) NULL ,
+ `description` varchar(255) NULL ,
+ `gr_agent_media_channel` varchar(32) NULL ,
+ `callback` varchar(32) NULL ,
+ `type` varchar(255) NULL ,
+ `hot` varchar(10) NULL ,
+ `default_media` varchar(3) NULL ,
+ `agent_channel_name` varchar(32) NULL ,
+ `gr_agent_channel_remarks` text NULL
+) ENGINE=OLAP
+UNIQUE KEY(`id`, `agent_id`)
+DISTRIBUTED BY HASH(`agent_id`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+
+CREATE TABLE `test_repeat_no_stackflow_t5` (
+ `game_id` varchar(255) NULL ,
+ `plat_id` varchar(20) NULL ,
+ `game_app_name` varchar(255) NULL ,
+ `game_sign` varchar(128) NULL ,
+ `game_name` varchar(255) NULL ,
+ `contract_name` varchar(255) NULL ,
+ `company_qualification` varchar(255) NULL ,
+ `system` varchar(64) NULL ,
+ `sync` varchar(10) NULL ,
+ `type` varchar(10) NULL ,
+ `game_product_id` varchar(32) NULL ,
+ `product_name` varchar(255) NULL ,
+ `core_play` varchar(32) NULL ,
+ `story_theme` varchar(32) NULL ,
+ `art_style` varchar(32) NULL ,
+ `contract_company` varchar(32) NULL ,
+ `state` varchar(10) NULL ,
+ `screen_type` varchar(10) NULL ,
+ `float_position` varchar(20) NULL ,
+ `is_open` varchar(10) NULL ,
+ `is_sync` varchar(10) NULL ,
+ `open_game` varchar(4) NULL ,
+ `app_name` varchar(256) NULL ,
+ `app_id` varchar(255) NULL ,
+ `release_state` varchar(10) NULL ,
+ `media_abbr` varchar(64) NULL ,
+ `os` varchar(10) NULL ,
+ `os_two` varchar(10) NULL ,
+ `game_version` varchar(20) NULL ,
+ `channel_show` varchar(10) NULL ,
+ `autologin` varchar(10) NULL ,
+ `relate_game` varchar(255) NULL ,
+ `discount` varchar(32) NULL ,
+ `disable_register` varchar(4) NULL ,
+ `disable_unrelated_login` varchar(4) NULL ,
+ `disable_related_back` varchar(4) NULL ,
+ `disable_back` varchar(4) NULL ,
+ `accept_related_game` varchar(20) NULL ,
+ `disable_pay` varchar(4) NULL ,
+ `tw_plat_id` varchar(4) NULL ,
+ `tw_os` varchar(4) NULL ,
+ `server_sign` varchar(32) NULL ,
+ `objective_id` varchar(32) NULL ,
+ `company_main` varchar(64) NULL ,
+ `business_purpose` varchar(4) NULL ,
+ `agent_sign` varchar(60) NULL ,
+ `icon` varchar(128) NULL ,
+ `package_name_id` varchar(30) NULL ,
+ `server_group_id` varchar(40) NULL ,
+ `client_type` varchar(10) NULL ,
+ `platform` varchar(10) NULL
+) ENGINE=OLAP
+UNIQUE KEY(`game_id`, `plat_id`)
+DISTRIBUTED BY HASH(`game_id`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+
+CREATE TABLE `test_repeat_no_stackflow_t6` (
+ `id` int NOT NULL ,
+ `abbr` varchar(64) NOT NULL ,
+ `name` varchar(64) NOT NULL ,
+ `desc` varchar(255) NULL ,
+ `created_at` datetime NULL DEFAULT CURRENT_TIMESTAMP ,
+ `created_user` varchar(64) NULL ,
+ `update_at` datetime NULL DEFAULT CURRENT_TIMESTAMP ,
+ `update_user` varchar(64) NULL ,
+ `hot` tinyint NULL ,
+ `usage_status` tinyint NULL DEFAULT "1"
+) ENGINE=OLAP
+UNIQUE KEY(`id`)
+DISTRIBUTED BY HASH(`id`) BUCKETS 10
+PROPERTIES (
+"replication_num" = "1",
+"is_being_synced" = "false",
+"storage_medium" = "hdd",
+"storage_format" = "V2",
+"inverted_index_storage_format" = "V2",
+"enable_unique_key_merge_on_write" = "true",
+"light_schema_change" = "true",
+"disable_auto_compaction" = "false",
+"enable_single_replica_compaction" = "false",
+"group_commit_interval_ms" = "10000",
+"group_commit_data_bytes" = "134217728",
+"enable_mow_light_delete" = "false"
+);
+ '''
+
+ // the logical repeat had a long set intersection chain,
+ // need convert set intersection's result SetView to Set,
+ // otherwise it will cause stackoverflow
+ sql """ explain
+ SELECT
+ agent_dims.game_id,
+ cj.`system`,
+ cj.game_sign,
+ cj.os,
+ cj.os_two,
+ ci.account_id,
+ ci.media,
+ ci.gr_agent_media_channel,
+ cj.game_product_id,
+ ck.site_name,
+ ci.chargeman,
+ agent_dims.agent_id,
+ agent_dims.site_id,
+ ck.anchor_id,
+ cl.abbr,
+ SUM(agent_dims.total_money) AS total_cost,
+ SUM(user_guid_reg_real.guid) AS total_reg_users,
+ CASE
+ WHEN SUM(user_guid_reg_real.guid) = 0 OR SUM(user_guid_reg_real.guid)
IS NULL THEN 0
+ ELSE ROUND(SUM(agent_dims.total_money) /
NULLIF(SUM(user_guid_reg_real.guid), 0), 2)
+ END AS reg_cost
+FROM (
+ SELECT
+ `site_id`,
+ `game_id`,
+ `agent_id`,
+ `game_sign`,
+ tdate,
+ COUNT(1),
+ SUM(`money`) AS total_money
+ FROM test_repeat_no_stackflow_t1
+ WHERE tdate BETWEEN '2025-05-01' AND '2025-05-01'
+ GROUP BY
+ `site_id`,
+ `game_id`,
+ `agent_id`,
+ `game_sign`,
+ tdate
+) AS agent_dims
+LEFT JOIN (
+ SELECT
+ `site_id`,
+ `game_id`,
+ `agent_id`,
+ `game_sign`,
+ register_date,
+ COUNT(DISTINCT guid) AS guid
+ FROM test_repeat_no_stackflow_t2
+ WHERE `register_date` BETWEEN '2025-05-01' AND '2025-05-01'
+ GROUP BY
+ `site_id`,
+ `game_id`,
+ `agent_id`,
+ `game_sign`,
+ register_date
+) AS user_guid_reg_real
+ ON agent_dims.game_id = user_guid_reg_real.game_id
+ AND agent_dims.game_sign = user_guid_reg_real.game_sign
+ AND agent_dims.agent_id = user_guid_reg_real.agent_id
+ AND agent_dims.site_id = user_guid_reg_real.site_id
+ AND agent_dims.tdate = user_guid_reg_real.register_date
+LEFT JOIN `test_repeat_no_stackflow_t3` ck
+ ON agent_dims.site_id = ck.site_id
+LEFT JOIN `test_repeat_no_stackflow_t4` ci
+ ON agent_dims.agent_id = ci.agent_id
+LEFT JOIN `test_repeat_no_stackflow_t5` cj
+ ON agent_dims.game_id = cj.game_id
+LEFT JOIN `test_repeat_no_stackflow_t6` cl
+ ON ci.agent = cl.abbr
+WHERE
+ agent_dims.game_id = '3706'
+ AND agent_dims.site_id = '5100814'
+GROUP BY
+ CUBE(
+ agent_dims.game_id,
+ cj.`system`,
+ cj.game_sign,
+ cj.os,
+ cj.os_two,
+ ci.account_id,
+ ci.media,
+ ci.gr_agent_media_channel,
+ cj.game_product_id,
+ ck.site_name,
+ ci.chargeman,
+ agent_dims.agent_id,
+ agent_dims.site_id,
+ ck.anchor_id,
+ cl.abbr
+ );
+ """
+
+ multi_sql '''
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t1 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t2 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t3 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t4 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t5 FORCE;
+ DROP TABLE IF EXISTS test_repeat_no_stackflow_t6 FORCE;
+ '''
+}
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