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This sample demonstrates use of subquery in SET clause.
The query works as follows. First, only those entries are picked that have "Ticket_price" 5 of less. Then corresponding venue is taken, its capacity is multiplied by two and set as the new ticket price. Notice that NULL fields are not affected.
update Events e
set Ticket_price = (select Capacity from Venues where VenueNo=e.VenueNo)*2
where Ticket_price <= 5
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Current version: 7.94
Released: February 08, 2023
Price: $ 149
 
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Component Ace is all that it advertises. It is easy to implement and is very fast.
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