Window function with TEXT/BLOB column in PARTITION BY fails with MCS-9019 "Unknown column type"

Summary

Any window function using a TEXT or BLOB column in PARTITION BY fails with:

ERROR 1815 (HY000): Internal error: WindowFunction::operator()

MCS-9019: Unknown column type encountered: '24'.

Type 24 = TEXT, type 15 = BLOB. VARCHAR and CHAR work correctly in the same position.
TEXT and BLOB are documented as supported data types since Columnstore 1.1.0.

Minimal Reproduction

CREATE TABLE t_text (id INT, txt TEXT) ENGINE=Columnstore;

INSERT INTO t_text SELECT seq, CONCAT('text_', seq % 50) FROM seq_1_to_2000;

-- Expected: works. Actual: ERROR 1815 MCS-9019

SELECT RANK() OVER (PARTITION BY txt ORDER BY id) FROM t_text;

Also fails with:

• BLOB: Unknown column type encountered: '15'
• MEDIUMTEXT, LONGTEXT: type '24'

Works correctly:

• ORDER BY txt (without PARTITION BY) — OK
• PARTITION BY varchar_col — OK

InnoDB comparison

CREATE TABLE t_text_i (id INT, txt TEXT) ENGINE=InnoDB;

INSERT INTO t_text_i VALUES (1,'aaa'),(2,'bbb'),(3,'aaa'),(4,'ccc'),(5,'bbb');

SELECT id, txt, RANK() OVER (PARTITION BY txt ORDER BY id) FROM t_text_i;

-- Works correctly, returns proper ranks

Probable Root Cause

utils/windowfunction/idborderby.cpp, EqualCompData::operator() (line 807): the switch statement handles CHAR/VARCHAR via getStringField() but TEXT (24), BLOB (15), and VARBINARY (14) are missing. They fall through to default which throws IDBExcept(ERR_WF_UNKNOWN_COL_TYPE).

Fix: add case CalpontSystemCatalog::TEXT:, case CalpontSystemCatalog::BLOB:, case CalpontSystemCatalog::VARBINARY: to the CHAR/VARCHAR branch.

Version

MariaDB Columnstore 25.10.4 (stable-23.10)