I have a table named as test table in which I have total of 8 columns as such ( Roll_no
, Student_name
, Company1
, Pass_fail1
, Company2
, Pass_fail2
, Company3
, Pass_fail3
). I have to insert the data from test table to another table (say Interview table). Columns of Interview table are ( Roll_no
, Student_name
, Company1
, Company2
, Company3
);
The condition for insertion is:
If a student has passed the test of Company1 (ie pass_fail1=1
) then he is eligible for interview of Company1,and same conditions for remaining two companies. So, Company1 will be inserted in interview table only if pass_fail1=1.
if pass_fail=0
then do not enter the name of the company.
Try this:
INSERT INTO interviews (Rollno,Student_name,Company1,Company2,Company3)
SELECT Rollno, Student_name,
(CASE WHEN Pass_fail1 = 1 THEN Company1 ELSE '' END) Company1,
(CASE WHEN Pass_fail2 = 1 THEN Company2 ELSE '' END) Company2,
(CASE WHEN Pass_fail3 = 1 THEN Company3 ELSE '' END) Company3
FROM test
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