Question

可能重复：
please correct me with the sql query

给出下面提到的错误，所以请在此处纠正我

Msg 137，Level 15，State 2，Line 1 必须声明标量变量“@courseId”。

@"SELECT * FROM [tbl_students] WHERE course_id=@courseId AND branch_id IN("+branchId+@") 
                AND (@passoutYear is null OR passing_year>=@passoutYear) 
               AND  (@currentBacklog is null OR current_backlog<=@currentBacklog)
AND  gender=@sex AND (@eGap is null OR gapin_education<=@egap)
AND  (@firstYrPercent is null OR first_year_percent>=@firstYrPercent
AND  (@secondYrpercent is null OR second_year_percent>=@secondYrPercent)
AND  (@thirdYrPercent is null OR third_year_percent>=@thirdYrPercent)
AND  (@finalYrpercent is null OR final_year_percent>=@finalYrpercent)
AND  (@currentDegreePercentage is null OR current_degree_percent>=@currentDegreePercentage)
AND  (@highSchoolPercentage is null OR highschool_percentage>=@highSchoolPercentage)
AND  (@higherSchoolPercentage is null OR ssc_percentage>=@higherSchoolPercentage)
AND  (@graduationPercent is null OR graduation_percentage>=@graduationPercentage)
AND  (@diplomaPercentage is null OR diploma_percentage>=@diplomaPercenage)
AND  (@noOfAtkt is null OR number_of_ATKT<=@noOfAtkt)
AND  (@date is null OR DOB>=@date)"

Answer 1

这只是意味着您忘记为SqlParameter为您的命令创建@courseId值。

Answer 2

你有：

未在SQL查询中声明变量@courseId
未向存储过程

SQL查询错误

2 个答案: