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Oracle AFTER INSERT trigger.

In this tutorial you will learn how to create an AFTER INSERT trigger (after inserting) in Oracle with syntax and examples.

Oracle executes (exci…

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Oracle BEFORE INSERT trigger.

In this tutorial you will learn how to create a BEFORE INSERT trigger (before inserting) in Oracle with syntax and examples.

Oracle executes (exci…

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15 tips on how to optimize SQL queries.

15 simple tips for action that will help you learn to write the right queries in SQL:…

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Oracle WITH operator.

The Oracle PL/SQL operator WITH allows you to give a subquery block a name/allowable that can be referenced in several places in the main SQL query.

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Oracle CREATE TABLE AS operator.

Oracle/PLSQL CREATE TABLE AS operator can be used to create a table from an existing table by copying columns of an existing table.

It is importa…

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