MySQL查询选择字段中的第一个单词并返回计数

Question

我需要一个MySQL查询，只计算字符串第一个单词的出现次数，然后按计数递减排序。

这是我的尝试，但不起作用：

   SELECT COUNT(SUBSTRING_INDEX(`logotitle`, ' ', 1)) as var
   FROM tbllogos
   ORDER BY var DESC

示例：

四个数据库条目：

1. 水果标志

2. Apple徽标

3. Apple Fruit Logo

4. 香蕉标志

查询应返回：

Apple 2

香蕉1

水果1

Answer 1

我认为你在寻找：

SELECT SUBSTRING_INDEX(`logotitle`, ' ', 1) as var, COUNT(*) as cnt
FROM tbllogos
GROUP BY var
ORDER BY cnt DESC

Answer 2

试试这个：

SELECT SUBSTRING_INDEX(logotitle, ' ',1) AS var, COUNT(*) FROM tbllogos GROUP BY var;

结果：

+--------+----------+
| var    | COUNT(*) |
+--------+----------+
| Apple  |        2 |
| Banana |        1 |
| Fruit  |        1 |
+--------+----------+

Answer 3

SELECT SUBSTRING(logotitle, 1, INSTR(logotitle, ' ')) AS var, COUNT(*) AS count
FROM tbllogos
GROUP BY var
ORDER BY count DESC