Learn how to write various types of SQL functions to perform several tasks
Beginner Level, – 2.5 hours, 31 lectures
Average rating 4.8/5 (4.8 (6 ratings) Instead of using a simple lifetime average, Udemy calculates a course’s star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.)
You should have a basic understanding of Relational Databases like Oracle,SQL Server
You should have a basic understanding SQL
You should have a database setup ( We’ll cover how to download and install Oracle)
You should have a database connection ( We’ll cover how to download and TOAD)
SQL has many built-in functions .In this course we will be learning about the SQL functions built in into Oracle Database that are available for use in various appropriate SQL statements. There are various types of SQL functions used to perform calculations on data and manipulate other aspects of data within the database.
Understanding SQL functions will help improve your skills and make your work much easier as a database professional. In this course we will be learning about the following types of SQL functions:
Aggregate functions return a single result row based on groups of rows, rather than on single rows. Aggregate functions can appear in select lists and in ORDER BY and HAVING clauses. They are commonly used with the GROUP BY clause in a SELECT statement, where Oracle Database divides the rows of a queried table or view into groups. In a query containing a GROUP BY clause, the elements of the select list can be aggregate functions, GROUP BY expressions, constants, or expressions involving one of these. Oracle applies the aggregate functions to each group of rows and returns a single result row for each group.
Single Row Functions:
Single-row functions return a single result row for every row of a queried table or view. These functions can appear in select lists, WHERE clauses, START WITH and CONNECT BY clauses, and HAVING clauses.
Numeric functions accept numeric input and return numeric values. Most numeric functions that return NUMBER values that are accurate to 38 decimal digits
convert a value from one datatype to another.
Analytic functions are commonly used to compute cumulative, moving, centered, and reporting aggregates.
Analytic functions compute an aggregate value based on a group of rows. They differ from aggregate functions in that they return multiple rows for each group.
Develop your creative and SQL skills to write useful functions to perform various tasks
Write Aggregate functions to compute a single value
Write single row functions
Write Analytic functions that use aggregate functions
Write functions to performing calculations on data.
This course is for app developers who want to acquire some SQL skills
This course is for aspiring database administrator who want to acquire some SQL skills
This course is for data analyst who want to acquire some SQL skills
This course is for aspiring data warehouse professionals who want to acquire some SQL skills
This course is for aspiring programmers who want to acquire some SQL skills
“Very comprehensive explanations to the Analytical Functions. I would have given a complete 5 if the examples included were a little more complicated, the examples included in the lessons were extremely simple.” (Bhavna Bahl)
“Very detailed and informative.” (John Sommer)
Bluelime Learning Solutions
Bluelime is UK based and creates quality easy to understand eLearning solutions .All our courses are 100% video based. We teach hands –on- examples that teach real life skills .
Bluelime has engaged in various types of projects for fortune 500 companies and understands what is required to prepare students with the relevant skills they need.
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A beginners guide to writing SQL Functions
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