Question

我与AS合并了两列，现在我想用LIKE搜索其中的数据。我怎样才能做到这一点？以下是我到目前为止的尝试。

Php：

$sql = "SELECT CONCAT (name , ' ' , surname) AS full  FROM person ";
$query = mysqli_query($con,$sql);
if($query){
    while($row=mysqli_fetch_assoc($query)){
        echo "<p>$row[full]</p>";
    }
}else{
    echo mysqli_error($con);
}

Answer 1

我认为你可以尝试这样 - 使用having子句而不是

select concat( field1, field2 ) as 'alias'
from `table`
having `alias` like '%word%'

或者，在您的情况下：

SELECT CONCAT (`name` , ' ' , `surname`) AS 'full'  FROM `person`
having `full` like '%word%';

Answer 2

使用子查询。

子查询"SELECT CONCAT (name , ' ' , surname) AS full FROM person "

完成查询：

SELECT * from (SELECT CONCAT (name , ' ' , surname) AS full  FROM person) where 
full like '%a%';

希望它会有所帮助。

Answer 3

您也可以尝试

SELECT * 
FROM pages 
WHERE CONCAT_WS('', column1, column2, column3) LIKE '%keyword%'

如何在与AS合并的列中使用LIKE进行搜索

3 个答案: