Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.11, 11.4, 12.3
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RelWithDebInfo, not debug. less common on other s390x Ubuntu's != 24.04
Description
CURRENT_TEST: main.column_compression_parts
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--- /home/buildbot/s390x-ubuntu-2204/build/mysql-test/main/column_compression_parts.result 2026-05-08 09:19:53.000000000 +0000
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+++ /home/buildbot/s390x-ubuntu-2204/build/mysql-test/main/column_compression_parts.reject 2026-05-08 13:30:00.048828666 +0000
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@@ -216,7 +216,6 @@
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INSERT INTO t1 VALUES (REPEAT('a',100),23),(REPEAT('v',100),123),(REPEAT('z',100),24),(REPEAT('k',100),124);
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SELECT id,SUBSTRING(a,1,10) FROM t1 where a=(REPEAT('k',100)) order by id;
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id SUBSTRING(a,1,10)
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-124 kkkkkkkkkk
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DROP TABLE t1;
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-------------------------------------------------------------------------------------------
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No results occured as optimizer is removing the table:
CREATE TABLE t1 (a VARCHAR(1000) COMPRESSED, id INT NOT NULL)
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PARTITION BY RANGE(id)
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SUBPARTITION BY KEY(a) SUBPARTITIONS 4
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(PARTITION p0 VALUES LESS THAN (5),
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PARTITION p1 VALUES LESS THAN (MAXVALUE));
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INSERT INTO t1 VALUES (REPEAT('a',100),23),(REPEAT('v',100),123),(REPEAT('z',100),24),(REPEAT('k',100),124);
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ANALYZE FORMAT=JSON SELECT id,SUBSTRING(a,1,10) FROM t1 where a=(REPEAT('k',100)) order by id;
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ANALYZE
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{
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"query_optimization": {
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"r_total_time_ms": 0.08763148
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},
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"query_block": {
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"select_id": 1,
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"table": {
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"message": "no matching row in const table"
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}
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}
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}
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comparitive x86_64 analyse format=json |
CREATE TABLE t1 (a VARCHAR(1000) COMPRESSED, id INT NOT NULL)
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PARTITION BY RANGE(id)
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SUBPARTITION BY KEY(a) SUBPARTITIONS 4
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(PARTITION p0 VALUES LESS THAN (5),
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PARTITION p1 VALUES LESS THAN (MAXVALUE));
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INSERT INTO t1 VALUES (REPEAT('a',100),23),(REPEAT('v',100),123),(REPEAT('z',100),24),(REPEAT('k',100),124);
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ANALYZE FORMAT=JSON SELECT id,SUBSTRING(a,1,10) FROM t1 where a=(REPEAT('k',100)) order by id;
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ANALYZE
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{
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"query_optimization": {
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"r_total_time_ms": 0.334909589
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},
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": 0.020236539,
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"partitions": ["p0_p0sp1", "p1_p1sp1"],
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"access_type": "system",
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"r_loops": 0,
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"rows": 1,
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"r_rows": null,
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"r_engine_stats": {},
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"filtered": 100,
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"r_filtered": null
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}
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}
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]
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}
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}
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DROP TABLE t1;
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Very old bug (< 2021).
Attachments
Issue Links
- is part of
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MDEV-36647 No red leaves in the forest
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- Open
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- links to