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polardb

6 indexed repositories · View on GitHub

PolarDB-for-PostgreSQL
A cloud-native database based on PostgreSQL developed by Alibaba Cloud.

C · 3203 stars
polardbx-sql
PolarDB-X is a cloud native distributed SQL Database designed for high concurrency, massive storage, complex querying scenarios.

Java · 1686 stars
polardbx-engine
polardbx-engine is a MySQL branch originated from Alibaba Group, especially supports large-scale distributed database system.

C++ · 573 stars
polardbx-cdc
polardbx-cdc is a core component of PolarDB-X which is responsible for global binary log generation, publication and subscription.

Java · 80 stars
duckdb-paimon
DuckDB extension for accessing Apache Paimon. 🦆

C++ · 47 stars
polardbx-backup
polardbx-backup is a hot backup tool for PolarDB-X

C++ · 10 stars

Beginner friendly Everything

Open All

[Feature request] TIME Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/duckdb-paimon#99 · Opened Sep 10, 2026
[v0.1.1-variegata] ssl issue using docker Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

polardb/duckdb-paimon#98 · Opened Sep 9, 2026
[v0.1.1] PK-table INSERT fails on bucket + deduplicate read returns stale L0 values Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

polardb/duckdb-paimon#95 · 1 comment · Opened Sep 4, 2026
Possible Deref of NULL in prepare.c Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

polardb/PolarDB-for-PostgreSQL#691 · Opened Aug 24, 2026
`CREATE VIEW` over an `ENUM` column returns `PXC-4700` but still commits a usable view Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/polardbx-sql#297 · Opened Aug 19, 2026
Major SAST issues Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

polardb/PolarDB-for-PostgreSQL#686 · Opened Aug 14, 2026
Critical SAST issues Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

polardb/PolarDB-for-PostgreSQL#685 · Opened Aug 14, 2026
NO_CAST.INTEGER_OVERFLOW.FLOAT Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

polardb/PolarDB-for-PostgreSQL#684 · Opened Aug 14, 2026
NO_CAST.INTEGER_OVERFLOW.FLOAT Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

polardb/PolarDB-for-PostgreSQL#683 · Opened Aug 14, 2026
NO_CAST.INTEGER_OVERFLOW Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

polardb/PolarDB-for-PostgreSQL#682 · Opened Aug 14, 2026
NO_CAST.INTEGER_OVERFLOW Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

polardb/PolarDB-for-PostgreSQL#681 · Opened Aug 14, 2026
DEREF_OF_NULL.RET.STAT Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

polardb/PolarDB-for-PostgreSQL#680 · Opened Aug 14, 2026
DEREF_OF_NULL.RET.STAT Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

polardb/PolarDB-for-PostgreSQL#679 · Opened Aug 14, 2026
DEREF_OF_NULL.RET.STAT Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

polardb/PolarDB-for-PostgreSQL#678 · Opened Aug 14, 2026
TAINTED_INT.LOOP Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

polardb/PolarDB-for-PostgreSQL#677 · Opened Aug 14, 2026
TAINTED_INT.LOOP Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

polardb/PolarDB-for-PostgreSQL#676 · Opened Aug 14, 2026
OVERFLOW_UNDER_CHECK Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

polardb/PolarDB-for-PostgreSQL#675 · Opened Aug 14, 2026
Index on DOUBLE Column Causes Wrong Results with semijoin=off IN Subquery Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

polardb/polardbx-sql#296 · Opened Jul 15, 2026
Prefix Index Scan Returns Wrong Results for Unicode String Range Comparison Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

polardb/polardbx-sql#295 · Opened Jul 13, 2026
BITMAP Index Scan Returns Wrong Results for FLOAT Column with BETWEEN Operator Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

polardb/polardbx-sql#294 · Opened Jul 12, 2026
DECIMAL长度计算问题 Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

polardb/polardbx-sql#293 · Opened Jul 8, 2026
DEREF_AFTER_NULL.EX.COND Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

polardb/PolarDB-for-PostgreSQL#655 · 1 comment · Opened Jul 6, 2026
DEREF_AFTER_NULL.EX.COND Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

polardb/PolarDB-for-PostgreSQL#654 · 1 comment · Opened Jul 6, 2026
NO_CAST.INTEGER_OVERFLOW Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

polardb/PolarDB-for-PostgreSQL#653 · Opened Jul 6, 2026
NO_CAST.INTEGER_OVERFLOW Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

polardb/PolarDB-for-PostgreSQL#652 · Opened Jul 6, 2026
OVERFLOW_UNDER_CHECK.LIB.MEMCPY Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

polardb/PolarDB-for-PostgreSQL#651 · Opened Jul 6, 2026
Equivalent view extraction retags signed `-1` as unsigned max across a view boundary Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

polardb/polardbx-sql#292 · Opened Jun 29, 2026
Equivalent view extraction rounds VAR_SAMP results Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

polardb/polardbx-sql#291 · Opened Jun 29, 2026
Equivalent view extraction retags UNION ALL integer payload as ENUM text Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

polardb/polardbx-sql#290 · Opened Jun 29, 2026
`WITH` + duplicated `GROUP BY` key leaks hidden `ORDER BY` column into the result set Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/polardbx-sql#289 · Opened Jun 29, 2026
Equivalent view extraction retags `UNION ALL` constant `1` as a `BIT(1)` byte Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

polardb/polardbx-sql#288 · Opened Jun 29, 2026
Extracting a `TINYBLOB` arm into a view re-encodes byte `0x80` during `UNION ALL` in `polardbx-sql` Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

polardb/polardbx-sql#287 · Opened Jun 29, 2026
CREATE VIEW over a TINYBLOB column reports `ERR_CONVERTOR` but it actually creates a usable view in `polardbx-sql` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/polardbx-sql#286 · Opened Jun 29, 2026
NEGATIVE_CODE_ERROR.EX Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/PolarDB-for-PostgreSQL#641 · Opened Jun 15, 2026
INVARIANT_RESULT Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

polardb/PolarDB-for-PostgreSQL#640 · Opened Jun 15, 2026
DEREF_OF_NULL.EX.COND Open

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

polardb/PolarDB-for-PostgreSQL#634 · Opened Jun 11, 2026
INTEGER_OVERFLOW Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

polardb/PolarDB-for-PostgreSQL#633 · 1 comment · Opened Jun 11, 2026
DEREF_AFTER_NULL.EX.COND Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

polardb/PolarDB-for-PostgreSQL#632 · Opened Jun 11, 2026
[Bug] PolarDB 15.8.2.0 CREATE INDEX 导致 XactLockTableWait 无限等待 Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

polardb/PolarDB-for-PostgreSQL#631 · 1 comment · Opened Jun 11, 2026
Bad copy paste Open

bug

Difficulty 1/5 Under an hour Newbie friendliness 78/100

polardb/PolarDB-for-PostgreSQL#630 · 1 comment · Opened May 29, 2026
Division by zero Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

polardb/PolarDB-for-PostgreSQL#629 · 1 comment · Opened May 29, 2026
Possible handle leak in file polar_worker.c Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

polardb/PolarDB-for-PostgreSQL#628 · Opened May 29, 2026
Possible handle leak dbgcomm.c Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

polardb/PolarDB-for-PostgreSQL#627 · Opened May 29, 2026
`CAST('0000-00-00' AS DATE)` Has Inconsistent Semantics and Incorrectly Equals Every Non-`NULL` `SET` Value Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

polardb/polardbx-sql#285 · Opened May 23, 2026
`INSERT IGNORE` Invalid `DATE` Yields Context-Dependent `NULL` / `0000-00-00` Semantics Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

polardb/polardbx-sql#284 · Opened May 23, 2026
`VARCHAR IN (SELECT YEAR_col)` Produces Plan-Dependent Wrong Results on SINGLE Tables Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

polardb/polardbx-sql#283 · Opened May 22, 2026
Logic Error: TLP Test - COUNT(*) returns 100, while equivalent TLP-partitioned queries return 200 under RIGHT JOIN with LATERAL subqueries Open

Difficulty 4/5 3-5 days Newbie friendliness 43/100

polardb/polardbx-sql#282 · Opened May 14, 2026
[Question] 本地docker部署后怎么开启cdc Open

question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

polardb/PolarDB-for-PostgreSQL#624 · Opened May 14, 2026
Logic Error: Incorrect row count in PolarDB when using LATERAL derived table with DISTINCT and CASE Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

polardb/polardbx-sql#281 · Opened May 13, 2026
Logic Error: LEFT JOIN ON FALSE causes incorrect NULL comparison result in PolarDB Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

polardb/polardbx-sql#280 · Opened May 13, 2026

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