From d04fff65fe07875af5d2866762e3963c99e30ca3 Mon Sep 17 00:00:00 2001
From: Francis Cao <franciscao@gmail.com>
Date: Wed, 17 Dec 2025 09:34:59 -0800
Subject: [PATCH] fix monthly truncation timezone issue

---
 src/lib/clickhouse.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/clickhouse.ts b/src/lib/clickhouse.ts
index f2ebbb72..0a336f80 100644
--- a/src/lib/clickhouse.ts
+++ b/src/lib/clickhouse.ts
@@ -61,7 +61,7 @@ function getDateStringSQL(data: any, unit: string = 'utc', timezone?: string) {
 
 function getDateSQL(field: string, unit: string, timezone?: string) {
   if (timezone) {
-    return `toDateTime(date_trunc('${unit}', ${field}, '${timezone}'))`;
+    return `toDateTime(date_trunc('${unit}', ${field}, '${timezone}'), '${timezone}')`;
   }
   return `toDateTime(date_trunc('${unit}', ${field}))`;
 }