Question

I want sql query to get the above result. The result is the maximum Id in TableA whose s_id in TableB has Stat=true i.e. 1.

The following does not do what I want:

select i.category_id,i.image_id,i.image_original,i.image_title,i.photographer 
from images i 
  inner join schedule s 
    on i.scheduleid=s.scheduleid 
    and s.status='live' 
where image_id=(select max(image_id) from images)

Answer 1

Use TOP to retrieve only 1 row
Use ORDER BY to control the sorting, so you get the single row you want

SELECT TOP(1) a.id, a.[image], a.s_id, b.stat, b.[desc]
  FROM TableA a
  JOIN TableB b on a.s_id = b.s_id
 WHERE b.stat = 1
ORDER BY A.ID DESC

An SQLFiddle showing this.