From the course: Oracle Database 12c: Advanced SQL
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Introduction to PL/SQL functions - Oracle Database Tutorial
From the course: Oracle Database 12c: Advanced SQL
Introduction to PL/SQL functions
- [Instructor] While PL/SQL procedures are used to perform database actions, PL/SQL functions are usually utilized to perform a calculation and return a result to the user. PL/SQL functions are very similar in structure to PL/SQL procedures, and are created using the create function, or in case you wish to override an existing function, the create or replace function command followed by the schema dot and functioning. PL/SQL functions can both take in arguments or parameters, and also return back values. PL/SQL functions are also created and stored in the database similarly to PL/SQL procedures. However, PL/SQL functions are invoked or executed differently. PL/SQL functions are executed as part of a sequel statement. We will see a demo of exactly how to create and execute a PL/SQL function later in our chapter. As you can see, a PL/SQL function is invoked from within a sequel statement on the employees' table.
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Contents
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Introduction to sequences2m 8s
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Creating sequences7m 6s
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Using identity columns7m 23s
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Introduction to table triggers3m 1s
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Creating triggers5m 24s
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Introduction to PL/SQL procedures3m 55s
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Introduction to PL/SQL functions1m 21s
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Introduction to PL/SQL packages2m 21s
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Creating PL/SQL procedures and functions7m 40s
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Creating synonyms4m 24s
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Creating simple views2m 24s
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Creating complex views5m 13s
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