Re: [INTERFACES]- SELECT statement

On Thu, Feb 25, 1999 at 09:26:50AM -0500, Margarita Barvinok wrote:
> 1)
> How can I realize this query in C-Embedded SQL?
>
> SELECT MAX (score)
> FROM report
> WHERE uname = 'xxxxxxx'
> AND exam_id IN
> ( SELECT exam_id
> FROM exam
> WHERE name = 'yyyy'
> )

exec sql declare C cursor for SELECT MAX (score)
FROM report
WHERE uname = 'xxxxxxx'
AND exam_id IN
( SELECT exam_id
FROM exam
WHERE name = 'yyyy'
);

exec sql fetch in C into :score;

> I used DECLARE CURSOR and FETCH for second SELECT statement.
> But I don't know how to use WHERE ... IN clause.

This is one statement. The subselect is handled by the backend.

Michael
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