1

2026-07-09 16:34:36 +08:00
parent 0abfda7f2d
commit 65f1514e89
1 changed files with 5 additions and 2 deletions
@@ -24,16 +24,19 @@ def upgrade() -> None:
    # ========================================
    # 2026-07-09 - 生成记录表增加日期表达式索引
    # ========================================
+    # 使用 (generated_at AT TIME ZONE 'UTC')::date 而非 date(generated_at)，
+    # 因为 date(timestamp with time zone) 在 PostgreSQL 中是 STABLE（依赖会话时区），
+    # 不能用于索引表达式；转为无时区时间戳后再转 date 才是 IMMUTABLE。
    op.create_index(
        'idx_chat_generation_tasks_generated_date',
        'chat_generation_tasks',
-        [sa.text("date(generated_at)")],
+        [sa.text("(generated_at AT TIME ZONE 'UTC')::date")],
        unique=False,
    )
    op.create_index(
        'idx_generation_records_generated_date',
        'generation_records',
-        [sa.text("date(generated_at)")],
+        [sa.text("(generated_at AT TIME ZONE 'UTC')::date")],
        unique=False,
    )