Question : Checking multiple values of subject - Oracle Sql

This problem maybe easier to describe by looking at the attached.

fig. 1
the sample table

fig 2.
the desired output

I'd like the query to return the subject_id of any subject which has no current plan. A subject may have multiple plans open at any time. If there is one or more 'Y' in the column (by subject) I don't want the subjects_id returning.

any help is appreciated.

Answer : Checking multiple values of subject - Oracle Sql

Should be something like this:

                       
             Select distinct T.SubjectID
From Sample_Table as T
Where Not Exists (Select Subject_ID From Sample_Table Where Current = 'Y' And Sample_Table.Subject_ID = T.Subject_ID)

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Question : Checking multiple values of subject - Oracle Sql

Answer : Checking multiple values of subject - Oracle Sql

Should be something like this: 1: 2: 3: Select distinct T.SubjectID From Sample_Table as T Where Not Exists (Select Subject_ID From Sample_Table Where Current = 'Y' And Sample_Table.Subject_ID = T.Subject_ID) Open in New Window Select All

Should be something like this:

1: 2: 3:

Select distinct T.SubjectID From Sample_Table as T Where Not Exists (Select Subject_ID From Sample_Table Where Current = 'Y' And Sample_Table.Subject_ID = T.Subject_ID)

Open in New Window

Select All