用SQL计算列中的单词

Question

id | words                            | other
1  | lorem ipsum                      | dsf
2  | Lorem Ipsum is simply dummy text | sads
3  | simply dummy text                | sdf
4  | Lorem Ipsum  text                | sdfsdf
5  | simply dummy Lorem               | asddasd 

我选择单词*。 我如何计算这个查询答案中有多少个单词？ 在这个例子中应该是17。我使用PHP和Doctrine。

Answer 1

SELECT LENGTH(words) - LENGTH(REPLACE(words, ' ', '')) + 1 AS words_count
FROM table_name

Answer 2

SELECT SUM( LENGTH(words) - LENGTH(REPLACE(words, ' ', ''))+1)
FROM table