Tag: Oracle

Dynamic SQL makes your programs more flexible by creating and processing SQL sentences at runtime.With Dynamic SQL you can directly execute most types of SQL statements, including data...

Once you have created a trigger in Oracle, you may need to remove it from the database. You can do this with the DROP TRIGGER command. DROP TRIGGER syntax DROP TRIGGER name_trigger;Trigger...

In this tutorial you will learn how to create an AFTER DELETE trigger (after removal) in Oracle with syntax and examples.Oracle executes (excites) the AFTER DELETE trigger after the DELETE...

In this tutorial you will learn how to create a trigger BEFORE DELETE (before deleting) in Oracle with syntax and examples.Oracle executes (excites) the BEFORE DELETE trigger before executing...

In this tutorial you will learn how to create an AFTER UPDATE trigger (after updating) in Oracle with syntax and examples.Oracle executes (excites) the AFTER UPDATE trigger after running the...

In this tutorial you will learn how to create a BEFORE UPDATE trigger (before updating) in Oracle with syntax and examples.Oracle executes (excites) the BEFORE UPDATE trigger before executing...

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

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

Did you know that you can put comments into SQL statements in Oracle? Comments can appear in one line or be distributed over several lines. Let's see how this can be done.There are two...

In this tutorial you will learn how to use literals (text, integers and numbers) in Oracle with examples.In Oracle, he wrote the same thing as the constant. We will consider three types of...

Below is a list of data types available in Oracle/PLSQL, which includes character, numeric, date/time, Boolean LOB, RowId data types. Symbolic data types Below are the character data types in...

Oracle PL SQL date / time functionsFunction DescriptionADD_MONTHS The Oracle/PLSQL function ADD_MONTHS returns a date plus n months.CURRENT_DATE Oracle/PLSQL function...

The Oracle/PLSQL TRUNC function returns a date truncated to a specific unit. Oracle/PLSQL syntax of TRUNC function TRUNC ( date_id, [ format_id ] ) Parameters and function arguments...

The Oracle/PLSQL TO_DATE function converts a string into a date. Syntax of the Oracle/PLSQL TO_DATE function TO_DATE( string1_id, [ format_mask_id ], [ nls_language_id ] ) Parameters and...

Oracle/PLSQL SYSTIMESTAMP function returns the current system date and time (including fraction of a second and time zone) to your local database. Oracle/PLSQL syntax of SYSTIMESTAMP...

Oracle/PLSQL SYSDATE function returns the current system date and time on your local database. Oracle/PLSQL syntax of the SYSDATE function SYSDATE Parameters and function argumentsNo...