本文介绍了存储过程查询中的添加条件。的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 29岁程序员,3月因学历无情被辞! 我有一个带有8个可选参数的存储过程,如果optinal参数在调用存储过程时通过,它将根据参数值将条件添加到Query中。 这是我的商店程序 ALTER PROCEDURE [dbo]。[Copy_Search_Candidate_forcampus] - 15,12,8,'10th',80.00 ( @ Course_id bigint , @ Year_id bigint , @ Semester_id bigint , @ Criteria1 varchar ( 50 )= null, @ Marks1 十进制( 18 , 2 )= null, @ Criteria2 varchar ( 50 )= null , @ Marks2 decimal ( 18 , 2 )= null, @ Criteria3 varchar ( 50 )= null, @ Marks3 十进制( 18 , 2 )= null, @ Criteria4 varchar ( 50 ) = null, @ Marks4 decimal ( 18 , 2 )= null ) AS BEGIN set nocount 上; 如果 1 = 0 开始 set fmtonly off end BEGIN TRANSACTION 选择 a。*, c.over_all_per MRes, d.over_all_per HRes, e.over_all_per DRes 来自 admission_table1 a join Branch_Master b a.Branch_Id = b.Branch_Id left outer join admission_table2 c on a.student_id = c.student_id 和 c.exam = ' 10th' left outer join admission_table2 d on a.student_id = d.student_id 和 d.exam = ' 12th' left 外部 join admission_table2 e on a.student_id = e.student_id 和 e.exam = ' 文凭' 其中 a.Course_Id=@Course_id 和 a.Semester_Id=@Semester_id 和 a.Year_Id=@Year_id 和 c.over_all_per> = 80 COMMIT IF @@ ERROR<> 0 开始 ROLLBACK end END 我想要这样 选择 a。*, c.over_all_per MRes, d.over_all_per HRes, e.over_all_per DR 来自 admission_table1 a join Branch_Master b on a.Branch_Id = b.Branch_Id left 外部 加入 admission_table2 c a.student_id = c.student_id 和 c.exam = ' 第十' left 外部 join admission_table2 d a.student_id = d.student_id 和 d.exam = ' 12th' left outer join admission_table2 e on a .student_id = e.student_id 和 e.exam = ' 文凭' 其中 a.Course_Id=@Course_id 和 a.Semester_Id=@Semester_id 和 a.Year_Id=@Year_id +++ ADD HERE 如果 Criteria1<> null +++ a nd c.over_all_per> @ Marks1 如果 Criteria2<> null +++ 和 d.over_all_per> @ Marks2 如果 Criteria3<> null +++ 和 e.over_all_per> @ Marks3 如果你不理解这个问题那么在评论中问我,我在。 实际上我不是一个好的描述者。 另一件事,通过检查所有参数值并编写查询,我知道解决它的冗长过程。 [edit] i认为你们都没有清楚地得到我的问题。 这里Criteria1,2,3,4只是可选参数而c,d ,e.over_all_per与单个表中的列相同。 我的条件是.. 如果Criteria2<> null那么d.over_all_per> @ mark2条件应该适用+ 如果Criteria3<> null则e.over_all_per> @ mark3条件应适用+ 如果Criteria4<> null则f.over_all_per> @ mark4条件应适用 Student_table withh student_id PK专栏 和Student_Exam with student_id FK专栏,考试,Mearks 这里我们在Student_id上查看Student_Exam表FK来自考试[Criteria1,2,3,4]和Marks [marks1,2,3,4] 解决方案 你可以这样做: SELECT a。*, c.over_all_per MRes, d.over_all_per HRes, e.over_all_per DRes FROM admissiON_table1 a JOIN Branch_Master b ON a.Branch_Id = b.Branch_Id LEFT OUTER JOIN admissiON_table2 c ON a.student_id = c。 student_id AND c.exam ='10th' LEFT OUTER JOIN admissiON_table2 d ON a.student_id = d.student_id AND d.exam ='12th' LEFT OUTER JOIN admissiON_table2 e ON a.student_id = e.student_id AN D e.exam ='Diploma' WHERE a.Course_Id = @Course_id AND a.Semester_Id = @Semeter_id AND a.Year_Id = @Year_id AND (Criteria = @ Criteria1 OR @ Criteria1 IS NULL)AND (Marks = @ Marks1 OR @ Marks1 IS NULL) 尝试使用 其中 a.Course_Id=@Course_id 和 a.Semester_Id=@Semester_id 和 a.Year_Id=@Year_id 和 (Criteria1 null 或 c.over_all_per> @ Marks1 )和 (Criteria2 是 null 或 d.over_all_per> @ Marks2 )和 (Criteria3 null 或 d.over_all_per> @ Marks3 ) I have a Store procedure with 8 optional parametes, if the optinal parameter passes when calling the store procedure it'll add the condition to the Query according to the parameter value.This is My Store ProcedureALTER PROCEDURE [dbo].[Copy_Search_Candidate_forcampus] --15,12,8,'10th',80.00(@Course_id bigint,@Year_id bigint,@Semester_id bigint,@Criteria1 varchar(50)=null,@Marks1 decimal(18,2)=null,@Criteria2 varchar(50)=null,@Marks2 decimal(18,2)=null,@Criteria3 varchar(50)=null,@Marks3 decimal(18,2)=null,@Criteria4 varchar(50)=null,@Marks4 decimal(18,2)=null)ASBEGINset nocount on; if 1=0 begin set fmtonly off endBEGIN TRANSACTIONselect a.*,c.over_all_per MRes,d.over_all_per HRes,e.over_all_per DResfromadmission_table1 ajoinBranch_Master b on a.Branch_Id=b.Branch_Id left outer join admission_table2 c on a.student_id=c.student_id and c.exam='10th' left outer join admission_table2 d on a.student_id=d.student_id and d.exam='12th' left outer join admission_table2 e on a.student_id=e.student_id and e.exam='Diploma' wherea.Course_Id=@Course_id anda.Semester_Id=@Semester_id anda.Year_Id=@Year_idand c.over_all_per>=80COMMITIF @@ERROR<>0 beginROLLBACK endENDI want It Like Thisselect a.*,c.over_all_per MRes,d.over_all_per HRes,e.over_all_per DResfromadmission_table1 ajoinBranch_Master b on a.Branch_Id=b.Branch_Id left outer join admission_table2 c on a.student_id=c.student_id and c.exam='10th' left outer join admission_table2 d on a.student_id=d.student_id and d.exam='12th' left outer join admission_table2 e on a.student_id=e.student_id and e.exam='Diploma' wherea.Course_Id=@Course_id anda.Semester_Id=@Semester_id anda.Year_Id=@Year_id +++ADD HEREif Criteria1 <>null +++ and c.over_all_per>@Marks1if Criteria2 <>null +++ and d.over_all_per>@Marks2if Criteria3 <>null +++ and e.over_all_per>@Marks3If you don't understand the Question then Ask me in comments, i'm on.actually i'm not a Good Describer.Another thing, I know the Lengthy process to Solve it, by Checking all the parameter value and writing the query.[edit]i think you all didn't get my question clearly.here Criteria1,2,3,4 is just the optional parameter and c,d,e.over_all_per is the same column from a single table.and my condition is..if Criteria2 <>null then d.over_all_per>@mark2 condition should apply +if Criteria3 <>null then e.over_all_per>@mark3 condition should apply+if Criteria4 <>null then f.over_all_per>@mark4 condition should applyStudent_table withh student_id PK Columnand Student_Exam with student_id FK column,exam,Mearkshere we checking on Student_Exam table on Student_id FK fro exam[Criteria1,2,3,4] and Marks[marks1,2,3,4] 解决方案 You could do something like this:SELECT a.*,c.over_all_per MRes,d.over_all_per HRes,e.over_all_per DResFROMadmissiON_table1 aJOINBranch_Master b ON a.Branch_Id=b.Branch_IdLEFT OUTER JOINadmissiON_table2 c ON a.student_id=c.student_id AND c.exam='10th'LEFT OUTER JOINadmissiON_table2 d ON a.student_id=d.student_id AND d.exam='12th'LEFT OUTER JOINadmissiON_table2 e ON a.student_id=e.student_id AND e.exam='Diploma'WHEREa.Course_Id = @Course_id ANDa.Semester_Id = @Semester_id ANDa.Year_Id = @Year_id AND(Criteria = @Criteria1 OR @Criteria1 IS NULL) AND(Marks = @Marks1 OR @Marks1 IS NULL)try withwherea.Course_Id=@Course_id anda.Semester_Id=@Semester_id anda.Year_Id=@Year_id and(Criteria1 is null or c.over_all_per > @Marks1) and(Criteria2 is null or d.over_all_per > @Marks2) and(Criteria3 is null or d.over_all_per > @Marks3) 这篇关于存储过程查询中的添加条件。的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云! 09-03 10:33