need help in sql query.

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sir, i have a 2 tables. first is course second is semister. In Course table there are 2 column courseID,CourseName. And in semister Table there are also 2 column. SemID, SemNumber.

Table look like:-

Course:-

CourseID --- CourseName
  201    ---  B.tech(Cse)
  202    ---  B.tech(IT)

Semister:-

SemID  ---  SemNumber
 101   ---     1
 102   ---     2

how i have select course and sem in dropdown and get CourseID and semID.. i need to make a sql to show the result like 'B.tech(IT)[2]' . it means Combine course and sem.

Posted 10-Sep-14 21:48pm

TCS54321

Updated 10-Sep-14 23:13pm

Nelek

v2

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2 solutions

Solution 2

If that is the totality of your table data, then you can't: there is nothing to connect one row of the Course table with any one row of the Semister table. While there may be a logical link between the two (that you understand from your knowledge of teh overall task), SQL requires an explicit link - either the SemID in the Course table or the CourseID in the Semister table.

Without that, SQL would have to guess - and it won't do that.

Posted 10-Sep-14 21:58pm

OriginalGriff

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Magic Wonder · Accepted Answer · 2014-09-10T21:57:00

Hi,

Check this....

SQL

SELECT COURSENAME + '[' + CONVERT(VARCHAR,SEMNUMBER) + ']' 
FROM COURSE, SEMESTER 
WHERE 
COURSEID=@CidFromDDL
AND SEMID=@SemIdFromDDL

Quote:
producing m * n rows, and then select the one that happens to join the selected course to the selected semester

or in Other way round in order to minimize cross join impact.....

SQL

Create proc pr_result
(
@pa_courseId int,
@pa_semId int
)
As
begin

create table #tmp_course
(
cid int,
cname varchar(200)
)

insert into #tmp_course(cid,cname )
select courseid,coursename from course where courseid=@pa_courseId

create table #tmp_semester
(
sid int,
sno int
)

insert into #tmp_semester(sid ,sno )
select courseid,coursename from course where courseid=@pa_semId 


SELECT cname+ '[' + CONVERT(VARCHAR,sno ) + ']' 
FROM #tmp_course, #tmp_semester

end

Hope this will help you.

Cheers