Answers for "what is a subquery sql"

SQL
1

why we use subquery in sql

We use subquery in order to get aggregate value in column without grouping data
Posted by: Guest on April-02-2021
1

subquery sql

UPDATE Book SET note= 'editore: ' + (SELECT name FROM Publisher WHERE Publisher.ID = Book.publisher)
Posted by: Guest on December-26-2020

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