用SQL計算列中的單詞

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 

我選擇單詞*。 我如何計算這個查詢答案中有多少個單詞？ 在這個例子中應該是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