Question

我需要带有'other'的var_name列在最后，所以我尝试了这个。它工作但我需要通过perc订购第一个select语句，UNION不会让我。我确定使用UNION可能不对。

SELECT count(*) as cnt,(count(*)/$cty)*100 AS perc, var_name
FROM tbl_answers
WHERE int_question = $id_question AND var_response <> ''
AND var_name <> 'comments' AND var_name <> 'Other'
GROUP BY var_name
UNION
SELECT count(*) AS cnt,(count(*)/$cty)*100 as perc,var_name
FROM tbl_answers
WHERE int_question = $id_question
AND var_response <> '' AND var_name <> 'comments' AND var_name = 'Other'
GROUP BY var_name

Answer 1

您可以使用此语法

SELECT ....... ORDER BY ( var_name = 'Other' ), perc

因为MySQL中的条件将0返回为false，将1返回为true，它将从var_name＆lt;＆gt;中提升它。 “其他”到var_name ='其他'

Answer 2

SELECT count(*) as cnt, (count(*)/$cty)*100 AS perc, var_name 
FROM tbl_answers 
WHERE int_question = $id_question 
 AND var_response <> '' 
 AND var_name <> 'comments' 
GROUP BY var_name 
ORDER BY (var_name = 'Other')  
       , perc

Answer 3

不要使用联合来执行此操作，只需使用常规的mysql ORDER BY：

SELECT count(*) as cnt, (count(*)/$cty)*100 AS perc, var_name 
FROM tbl_answers 
WHERE int_question = $id_question and var_response <> '' AND var_name <> 'comments'
GROUP BY var_name
ORDER BY var_name = 'Other'

Mysql按异常排序

3 个答案: