> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/columnstore/23.10/23.10.3.md). # MariaDB ColumnStore 23.10.3 Release Notes ## Overview MariaDB ColumnStore 23.10.3 is a maintenance release of MariaDB ColumnStore. MariaDB ColumnStore is a columnar storage engine included with MariaDB Enterprise Server. MariaDB ColumnStore 23.10.3 was released on 2025-01-27. This release is of General Availability (GA) maturity. MariaDB ColumnStore 23.10.3 is a GA release in the 23.10 series. This release of MariaDB ColumnStore is included with MariaDB Enterprise Server 10.6.20-16. ## Notable Changes * NOT LIKE is not compatible with MariaDB on explicit NULL ([MCOL-4499](https://jira.mariadb.org/browse/MCOL-4499)) * LEFT(str, negativeInt) returns a wrong result ([MCOL-4671](https://jira.mariadb.org/browse/MCOL-4671)) * Having not() provokes an ERROR 2013 ([MCOL-4756](https://jira.mariadb.org/browse/MCOL-4756)) * MariaDB ColumnStore produces wrong averages on extracted null-datetime fields (like year) ([MCOL-5241](https://jira.mariadb.org/browse/MCOL-5241)) * select-union-select gives corrupted values ([MCOL-5307](https://jira.mariadb.org/browse/MCOL-5307)) * Wrong result ('`pNuLl_`' instead of NULL) in the TEXT column when LEFT OUTER JOIN is used with WHERE condition ([MCOL-5581](https://jira.mariadb.org/browse/MCOL-5581)) * Incorrect columnstore result | implicit self joins ([MCOL-5651](https://jira.mariadb.org/browse/MCOL-5651)) * UNION query returns incorrect results when one table is ENGINE COLUMNSTORE ([MCOL-5669](https://jira.mariadb.org/browse/MCOL-5669)) * DAY function returns wrong result in query on ColumnStore table ([MCOL-5670](https://jira.mariadb.org/browse/MCOL-5670)) * Different Resultset with AllowDiskBasedAggregation = Y ([MCOL-5691](https://jira.mariadb.org/browse/MCOL-5691)) * UNION`/`INTERSECT`/`EXCEPT VALUES crashes the server if a ColumnStore table is involved ([MCOL-5703](https://jira.mariadb.org/browse/MCOL-5703)) * ColumnStore: SELECT SUM(0) may cause data type unknown error ([MCOL-5708](https://jira.mariadb.org/browse/MCOL-5708)) * ALTER Column VARCHAR | Not Supported ([MCOL-5779](https://jira.mariadb.org/browse/MCOL-5779)) * MariaDB ColumnStore 23.10.2: wrong COUNT DISTINCT`s in` GROUP BY ([MCOL-5875](https://jira.mariadb.org/browse/MCOL-5875)) * SELECT GROUP BY is not picking not-NULL values ([MCOL-5755](https://jira.mariadb.org/browse/MCOL-5755)) * SELECT CONCAT() throws error: MCS-2021 ([MCOL-5776](https://jira.mariadb.org/browse/MCOL-5776)) ## Issues Fixed ### Can result in hang or crash * Reading a ColumnStore table via a view using "count" crashes when the view has "order by" in definition ([MCOL-5249](https://jira.mariadb.org/browse/MCOL-5249)) * CMAPI self-signed cert are expired after one year.. which leads to "Connection refused" messages ([MCOL-5454](https://jira.mariadb.org/browse/MCOL-5454)) * ColumnStore crashes/unstable on too large selects ([MCOL-5587](https://jira.mariadb.org/browse/MCOL-5587)) * OOM occurs during disk based aggregation with um\_mem\_limit > 0 ([MCOL-5715](https://jira.mariadb.org/browse/MCOL-5715)) * SM doesn't quit endless loop when S3 service returns non-retryable error ([MCOL-5785](https://jira.mariadb.org/browse/MCOL-5785)) * MCS crashes when PMSmallSide is raised > 1GB(the current default) ([MCOL-5787](https://jira.mariadb.org/browse/MCOL-5787)) * Memory leaks in plugin code ([MCOL-5791](https://jira.mariadb.org/browse/MCOL-5791)) * RGData ui32 counters limits us with addressing big data ([MCOL-5794](https://jira.mariadb.org/browse/MCOL-5794)) * Separated UM/PM topologies are broken b/c DEC sends request to impossible PM id ([MCOL-5805](https://jira.mariadb.org/browse/MCOL-5805)) * UM/PM roles are broken in DEC::writeToClients ([MCOL-5808](https://jira.mariadb.org/browse/MCOL-5808)) * ColumnStore Server crashes when REGEX is matched to function return value ([MCOL-5812](https://jira.mariadb.org/browse/MCOL-5812)) * Pass UBSAN sanity checks ([MCOL-5844](https://jira.mariadb.org/browse/MCOL-5844)) ### Related to performance * ByteStreamProcessor is slow with UM JOIN ([MCOL-5788](https://jira.mariadb.org/browse/MCOL-5788)) * Remove boost::iequals from the code because it takes a global lock getting a locale ([MCOL-4696](https://jira.mariadb.org/browse/MCOL-4696)) ## Platforms In alignment with the [enterprise lifecycle](/docs/release-notes/enterprise-server/about/enterprise-server-lifecycle.md), MariaDB ColumnStore 23.10.3 is provided for: * Debian 11 (x86\_64, ARM64) * Debian 12 (x86\_64, ARM64) * Red Hat Enterprise Linux 8 (x86\_64, ARM64) * Red Hat Enterprise Linux 9 (x86\_64, ARM64) * Rocky Linux 8 (x86\_64, ARM64) * Rocky Linux 9 (x86\_64, ARM64) * Ubuntu 20.04 (x86\_64, ARM64) * Ubuntu 22.04 (x86\_64, ARM64) * Ubuntu 24.04 (x86\_64, ARM64) ## Installation Instructions * [ColumnStore Object Storage Topology with MariaDB Enterprise Server 10.6 ](/docs/server/architecture/topologies/columnstore-object-storage.md)[and MariaDB ColumnStore 23.10](/docs/server/architecture/topologies/columnstore-object-storage.md) * [ColumnStore Shared Local Storage Topology with MariaDB Enterprise Server 10.6](/docs/server/architecture/topologies/columnstore-shared-local-storage.md)[ and MariaDB ColumnStore 23.10](/docs/server/architecture/topologies/columnstore-shared-local-storage.md) * [HTAP Topology with MariaDB Enterprise Server 10.6](/docs/server/architecture/topologies/htap.md)[ and MariaDB ColumnStore 23.10](/docs/server/architecture/topologies/htap.md) * [Single-Node ColumnStore 23.10 with MariaDB Enterprise Server 10.6](/docs/server/architecture/topologies/single-node-topologies/enterprise-server-with-columnstore-object-storage.md)[ and Object Storage](/docs/server/architecture/topologies/single-node-topologies/enterprise-server-with-columnstore-object-storage.md) * [Single-Node ColumnStore 23.10 with MariaDB Enterprise Server 10.6](/docs/server/architecture/topologies/single-node-topologies.md) ## Upgrade Instructions * Upgrade Multi-Node MariaDB ColumnStore from 6 to 23.10 * [Major Release Upgrades for MariaDB ColumnStore](/docs/release-notes/columnstore.md) *This page is: Copyright © 2026 MariaDB. 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