在mybatis中使用@变量报错 Caused by: net.sf.jsqlparser.parser.ParseException: Encountered unexpected token: “_select @pids mybatisplus 不支持

起因是我写了一个复杂的sql,sql中使用了@这种自定义的变量,在查询sql的时候直接报错了,

解决办法:

1.是升级mybatisplus版本到v3.5.1及以上,

2.或者在mapper上打注解 @InterceptorIgnore(tenantLine = "true")

SELECT  
    t1.id  
FROM  
    xc_department t1  
JOIN  
    (SELECT @pids := 2) t2  
JOIN  
    (SELECT   
        t1.*,  
        IF(  
            find_in_set(t1.pid, @pids) > 0,  
            @pids := concat(@pids, ',', t1.id),  
            0  
        ) AS ischild  
    FROM   
        xc_department t1  
    ) t3 ON t3.id = t1.id  
WHERE  
    ischild != 0 OR t1.id = 2;