Question

我正在使用php / mysql和jquery ui来自动填充。我需要帮助的是从单个输入（chicago，il）查询db（city，state）中的两个字段。扔我的是如何组合查询中的字段。

有效的示例

SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM Zips
WHERE City = $foo // 'chicago'
OR Zip = $foo // '01234'
GROUP BY City, State
ORDER BY State;

我想做什么，但没有工作

SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM Zips
WHERE City = $foo // 'chicago'
OR
City+', '+State = $foo // 'chicago, il'
OR Zip = $foo // '01234'
GROUP BY City, State
ORDER BY State;

（BTW - 州字段是缩写。）

原因是某些城市名称只有3或4个字母，并且包含在其他城市名称中，因此用户可能需要输入逗号和状态才能看到自动建议弹出窗口。

Answer 1

我在我的数据库上尝试了 CONCAT_WS 并且运行正常，以下查询应该适合您。

CONCAT_WS的语法是here：第一个参数是用于连接字符串的分隔符，这是其他参数

SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM Zips
WHERE City = $foo // 'chicago'
OR
CONCAT_WS(', ',City, State) = $foo // 'chicago, il'
OR Zip = $foo // '01234'
GROUP BY City, State
ORDER BY State;

Answer 2

在运行查询之前拆分输入字符串，以便执行以下操作：

SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM Zips
WHERE City = 'chicago'
OR Zip = '01234'
GROUP BY City, State
ORDER BY State;

如果他们也指定芝加哥，状态变得无关紧要。

Answer 3

你可以尝试


SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM Zips
WHERE City = 'chicago'
OR( City LIKE "chicago,%" AND State LIKE '%illinois')

OR Zip = '01234'
GROUP BY City, State
ORDER BY State;

Answer 4

我建议在括号中包装字符串连接。您还可以在MySQL中使用类似CONCAT（）或CONCAT_WS（）的函数。

你的意思是“它不起作用”？该条款打破或......？

Answer 5

SELECT City, State, MIN(Zip) AS Min_ZIP, MAX(Zip) AS Max_ZIP
FROM
   (SELECT City, State, Zip, (City +', ' + State) AS CityState
    FROM Zips) as SQ
WHERE City = $foo // 'chicago'
OR
CityState = $foo // 'chicago, il'
OR Zip = $foo // '01234'
GROUP BY City, State
ORDER BY State;

sql从单个表单输入查询多个字段

5 个答案: