Question

我想向select查询发送一个select查询，然后计算结果。

我想做的是这样的事情：

SELECT `word_id`, SUM(`is_core`) as `cores` FROM `table` GROUP BY `word_id` ORDER BY  `cores` DESC;

然后我想向上面的查询发送一个选择查询。像这样：

SELECT * FROM `THE QUERY ABOVE` WHERE `cores` >1;
SELECT FOUND_ROWS();

任何帮助将不胜感激。

Answer 1

试试这个......提供总记录数。

Select count(word_id) from (SELECT `word_id`, SUM(`is_core`) as `cores` 
FROM `table` GROUP BY `word_id` ORDER BY  `cores` DESC having SUM(`is_core`) > 1)

Answer 2

为什么使用嵌套查询？单个查询可以获得相同的结果。

SELECT `word_id`, SUM(`is_core`) as `cores` 
FROM `table` 
GROUP BY `word_id` DESC 
HAVING `cores` > 1 
ORDER BY  `cores`;

在mysql中的select中选择并计数

2 个答案: