[improvement][headless]Support s2sql with union all statements.

launchers/standalone/src/test/resources/sql/testUnion.sql

@@ -0,0 +1,34 @@
+WITH
+  recent_week AS (
+    SELECT
+      SUM(访问次数) AS _访问次数_,
+      COUNT(DISTINCT 用户名) AS _访问用户数_
+    FROM
+      超音数数据集
+    WHERE
+      数据日期 >= '2024-12-20'
+      AND 数据日期 <= '2024-12-27'
+  ),
+  first_week_december AS (
+    SELECT
+      SUM(访问次数) AS _访问次数_,
+      COUNT(DISTINCT 用户名) AS _访问用户数_
+    FROM
+      超音数数据集
+    WHERE
+      数据日期 >= '2024-12-01'
+      AND 数据日期 <= '2024-12-07'
+  )
+SELECT
+  '最近7天' AS _时间段_,
+  _访问次数_,
+  _访问用户数_
+FROM
+  recent_week
+UNION ALL
+SELECT
+  '12月第一个星期' AS _时间段_,
+  _访问次数_,
+  _访问用户数_
+FROM
+  first_week_december

launchers/standalone/src/test/resources/sql/testWith.sql

@@ -0,0 +1,29 @@
+WITH
+  weekly_visits AS (
+    SELECT
+      YEAR (数据日期) AS _year_,
+      WEEK (数据日期) AS _week_,
+      SUM(访问次数) AS total_visits
+    FROM
+      超音数数据集
+    WHERE
+      (
+        数据日期 >= '2024-11-18'
+        AND 数据日期 <= '2024-11-25'
+      )
+    GROUP BY
+      YEAR (数据日期),
+      WEEK (数据日期)
+  )
+SELECT
+  _year_,
+  _week_,
+  total_visits
+FROM
+  weekly_visits
+WHERE
+  (_year_ = YEAR (CURRENT_DATE))
+ORDER BY
+  total_visits DESC
+LIMIT
+  1