如何合并大量表的汇总结果？

Question

我有很多表，它们的名字如下：

datasetW01.W01_*，datasetW02.W02_*〜100

如何优化以下SQL？

#standardSQL
WITH result1 AS (
  SELECT Col1, COUNT(Col1) AS count
  FROM `dataset.W01_*`
  GROUP BY Col1
), result2 AS (
  SELECT Col1, COUNT(Col1) AS count
  FROM `dataset.W02_*`
  GROUP BY Col1
)
SELECT col1, GREATEST(IFNULL(t1.count, t2.count), IFNULL(t2.count, t1.count)) count
FROM result1 t1 
FULL OUTER JOIN result2 t2
USING (col1)
ORDER BY count DESC

对于数据集W01.W01_ ，数据集W02.W02 _ ，数据集W03.W03_ ，数据集W04.W04 _ ，数据集W05.W05_ *等，只需一个查询？