在sql查询中加入属性

Question

我想使用MySQL

在select语句中加入一些属性

SELECT 
        (Cast(n_socio As varchar), ' - ', nombre, ' ', apellidos) As DisplayItem,
        N_socio 
FROM     
        usuarios 
ORDER BY 
        n_socio

Answer 1

使用MySQL CONCAT函数，如

SELECT CONCAT((Cast(n_socio AS varchar),' - ',nombre ,' ',apellidos)) AS DisplayItem,
       N_socio
FROM usuarios
ORDER BY n_socio

Answer 2

您缺少CONCAT功能。

SELECT 
        CONCAT(Cast(n_socio As varchar), ' - ', nombre, ' ', apellidos) As DisplayItem,
        N_socio 
FROM     
        usuarios 
ORDER BY 
        n_socio