Question

我已将我的数据库从MSQL转换为MySQL，我收到以下错误。

错误消息：您的SQL语法出错;查看与MySQL服务器版本对应的手册，以便在'VARCHAR（500）附近使用正确的语法=在第22行使用'男'AND Responses.res_void = 0'

我无法解决它看起来对我有效的问题？这里有没有MySQL吗？

SELECT
    Responses.res_col AS answer
    ,Responses.res_created AS dateCreated
    ,Responses.res_notes AS note
    ,Responses.question_id AS questionID
    ,Responses.res_id AS responseID
    ,Responses.student_id AS studentID
    ,Responses.res_answer AS subQuestion
    ,Responses.survey_id AS surveyID
    ,Responses.res_void AS void
    ,Student.res_answer AS filter
    FROM
        Responses, Responses AS Student
    WHERE
        Responses.student_id = Student.student_id
    AND
        Responses.survey_id = <cfqueryparam cfsqltype="cf_sql_integer" value="#arguments.surveyID#"> 
    AND
        Student.survey_id = <cfqueryparam cfsqltype="cf_sql_integer" value="#arguments.surveyID#"> 
    AND
        Responses.question_id = <cfqueryparam cfsqltype="cf_sql_integer" value="#arguments.questionID#">                    AND
        CAST(Student.res_answer AS VARCHAR(500)) = '#arguments.filter#'
    AND Responses.res_void = <cfqueryparam cfsqltype="cf_sql_bit" value="#arguments.void#">

Answer 1

您无法转换为VARCHAR()类型。您可以投射到的唯一文字类型是CHAR(n)：

CAST(Student.res_answer AS CHAR(500)) = '#arguments.filter#'

从mysql doc开始，结果的类型可以是以下值之一：

BINARY[(N)]
CHAR[(N)]
DATE
DATETIME
DECIMAL[(M[,D])]
SIGNED [INTEGER]
TIME
UNSIGNED [INTEGER]

在'VARCHAR（500）附近使用正确语法的MySQL服务器版本

1 个答案: