L'operatore SQL UNION combina i risultati di due o più query e fa un set di risultati che include le righe prelevato dalla query partecipano all'Unione.

In this page we are going to discuss, how more than one index numbers for more columns can be used to make the result of a query in descending order based on those columns.

In this page we are going to discuss, how an index number for a column can be used to make the result of a query in descending order based on that column with GROUP BY clause.

In this page we are going to discuss, how an index number for a column can be used to make the result of a query in descending order based on that column.

In this page we are going to discuss, how the SQL ORDER BY clause can be used to impose an order on the result of a query.

Some times, it is required to get an organized output from a SELECT QUERY.

CREATE ROLE creates a set of privileges which may be assigned to users of a database.

Following the standard SQL syntax for changing passwords for users, we have discussed how to change passwords in different database platforms like DB2, Oracle, MySQL, PostgreSql and Microsoft SQL Server.

Following the standard SQL syntax for creating how to create users, we have discussed how to create user in different database platforms like DB2, Oracle, MySQL, PostgreSql and Microsoft SQL Server.

A transaction is a sequence of operations performed (using multiple SQL statements) on a database as single logical unit of work which is isolated from other transactions.