From 444077511113901b826c4f0c1386a85bc5fc525e Mon Sep 17 00:00:00 2001
From: Ben <69395085+smoleyxd@users.noreply.github.com>
Date: Sun, 9 Aug 2026 00:19:49 -0400
Subject: [PATCH] Set prefer_column_name_to_alias on ClickHouse connections

ClickHouse resolves identifiers to select-list aliases before table
columns by default, so lookup queries that reuse a column name as an
alias (e.g. 'data as metadata, 0 as data' in the item lookup) return
the alias literal instead of the column. Item lookups then return
metadata as UInt8 0, mixed lookup unions produce
Variant(Array(Int8), UInt8), and the JDBC client fails every /co
lookup with 'Column is not of array type'.

Setting prefer_column_name_to_alias=1 restores the alias semantics
these queries rely on under SQLite and MySQL.

Fixes #947
---
 .../coreprotect/database/clickhouse/ClickHouseJdbcConfig.java    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/net/coreprotect/database/clickhouse/ClickHouseJdbcConfig.java b/src/main/java/net/coreprotect/database/clickhouse/ClickHouseJdbcConfig.java
index 7317cb861..741ff3268 100644
--- a/src/main/java/net/coreprotect/database/clickhouse/ClickHouseJdbcConfig.java
+++ b/src/main/java/net/coreprotect/database/clickhouse/ClickHouseJdbcConfig.java
@@ -46,6 +46,7 @@ public ClickHouseJdbcConfig(String host, int port, String database, String usern
         properties.setProperty(SERVER_SETTING_PREFIX + "async_insert", "0");
         properties.setProperty(SERVER_SETTING_PREFIX + "do_not_merge_across_partitions_select_final", "1");
         properties.setProperty(SERVER_SETTING_PREFIX + "wait_end_of_query", "1");
+        properties.setProperty(SERVER_SETTING_PREFIX + "prefer_column_name_to_alias", "1");
         properties.setProperty("ssl", Boolean.toString(tls));
         properties.setProperty("jdbc_ignore_unsupported_values", "false");
     }