-1

我已将数据库从 MSQL 转换为 MySQL，但出现以下错误。

错误消息：您的 SQL 语法有错误；检查与您的 MySQL 服务器版本相对应的手册，以在第 22 行的 'VARCHAR(500)) = 'Male' AND Responses.res_void = 0' 附近使用正确的语法

我无法解决它看起来对我有效的问题？这里有 MySQL no no 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#">
4

1 回答 1

4

您不能转换为VARCHAR()类型。您可以转换为的唯一文本类型是CHAR(n)：

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

在mysql doc中，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]
于 2013-07-29T10:25:18.293 回答