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PostgreSQL to_char function.

PostgreSQL to_char function converts a number or date to a string….

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PostgreSQL COUNT function.

The PostgreSQL COUNT function returns the number of expressions….

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Discrete and standalone transactions in Oracle.

To help in managing transactions, Oracle DBMS allows you to use two special types of transactions – discrete transactions and standalone transactio…

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Oracle database security and PL/SQL programming.

Many PL/SQL developers believe that only database administrators and security specialists should take care of security. Indeed, some security aspects …

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PostgreSQL MAX function.

PostgreSQL MAX function returns the maximum value of the expression….

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