Category: sql

What's the difference between INNER JOIN and OUTER JOIN ? What do LEFT JOIN , RIGHT JOIN and FULL JOIN mean? Translation of the...

The table contains two columns: id | description How to make it so that when a new line is added, the user id will grow...

V documentation PostgreSQL says: Read Committed is the default isolation level in PostgreSQL. When a transaction uses this isolation level, a SELECTquery (without a FOR UPDATE/ SHAREclause) sees...