mysql

问题描述：

case后的字段，加表名时，会报错，如下：

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.type

FROM

agency_vms' at line 7, Time: 0.024000s

如下代码有问题：

SELECT
    agency_name,
    agency_vms.type as adbw,
    case agency_vms.type
        when 'PCS' then '审方机构'
        when 'VS' then '复诊机构'
    end as agency_vms.type
    
FROM
agency_vms

解决方案：

case后的字段用表名.字段名，end后的用重命名字段

SELECT
    agency_name,
    agency_vms.type as adbw,
    case agency_vms.type
        when 'PCS' then '审方机构'
        when 'VS' then '复诊机构'
    end as adbw     -- 将end后的改为重命名字段
    
FROM
agency_vms