SELECT SUBSTRING(b.AreaCode,
1,
6) AS areaCode,
COUNT(*) AS count
FROM Data_MoJiWeather A JOIN
(SELECT
AreaCode,
Lon,
Lat,
Shi,
Xian,
AreaType
FROM Data_Area_Info
WHERE AreaCode NOT IN
(SELECT AreaCode
FROM Data_Area_Info a
WHERE Xian LIKE '%区'
AND right(left(a.AreaCode,6),2)<06)) B
ON A.location LIKE '%' + b.Shi + b.Xian + '%'
AND b.AreaType = '县'
WHERE CONVERT(varchar(100), up_time, 23) = '2017-11-11'
GROUP BY SUBSTRING(b.AreaCode, 1, 6)
UNION
ALL SELECT SUBSTRING(b.AreaCode,
1,
4)+'01' AS areaCode, COUNT(*) AS count
FROM Data_MoJiWeather A
JOIN
(SELECT AreaCode,
Lon,
Lat,
Shi,
Xian,
AreaType
FROM Data_Area_Info
WHERE AreaCode IN
(SELECT [AreaCode]
FROM Data_Area_Info a
WHERE Xian LIKE '%区'
AND right(left(a.AreaCode,6),2)<06)) B
ON A.location LIKE '%' + b.Shi + b.Xian + '%'
AND b.AreaType = '县'
WHERE CONVERT(varchar(100), up_time, 23) = '2017-11-11'
GROUP BY SUBSTRING(b.AreaCode, 1, 4)+'01'
ORDER BY areaCode
表扫描占了很大的开销