统计列中所有文字的出现次数

Question

我想统计varchar(200)列中某个特定单词的所有出现次数。

我的数据是这样的：

ID MyText 
--- -------------------------------------- 
1  Hello how are you doing? Hello again. 
2  This is great. 
3  Hello my special person. 

所以我想SQL做一个像“你好％％”，并与数3.我现在不关心回来是例如局部单词被包括在内，并且现在并不在乎通配符。我只需要进行一些简单的测试来验证一些事情。

Answer 1

WITH T(ID,MyText) AS 
(
SELECT 1, 'Hello how are you doing? Hello again.' UNION ALL 
SELECT 2, 'This is great.' UNION ALL 
SELECT 3, 'Hello my special person.' 
) 
SELECT *, 
     (LEN(MyText) - LEN(REPLACE(MyText, 'Hello', '')))/LEN('Hello') AS Num 
FROM T 

或者

SELECT SUM((LEN(MyText) - LEN(REPLACE(MyText, 'Hello', '')))/LEN('Hello')) 
FROM T 

以总成绩