Oracle SQL Intermediate - Data Extraction Training Course

Course Code

osqlide

Duration

14 hours (usually 2 days including breaks)

Requirements

Recommended attendance on the "Oracle SQL for Beginners - Data Extraction" training course

Overview

The objective of the course is to enable participants to gain a mastery of how to work with the SQL language in Oracle database for data extraction at intermediate level.

Course Outline

Limiting results

  • The WHERE clause
  • Comparison operators
  • LIKE Condition
  • Prerequisite BETWEEN ... AND
  • IS NULL condition
  • Condition IN
  • Boolean operators AND, OR and NOT
  • Many of the conditions in the WHERE clause
  • The order of the operators.
  • DISTINCT clause

SQL functions

  • The differences between the functions of one and multilines
  • Features text, numeric, date,
  • Explicit and implicit conversion
  • Conversion functions
  • Nesting functions
  • Viewing the performance of the functions - dual table
  • Getting the current date function SYSDATE
  • Handling of NULL values

Aggregating data using the grouping function

  • Grouping functions
  • How grouping functions treat NULL values
  • Create groups of data - the GROUP BY clause
  • Grouping multiple columns
  • Limiting the function result grouping - the HAVING clause

Subqueries

  • Place subqueries in the SELECT command
  • Subqueries single and multi-lineage
  • Operators Subqueries single-line
  • Features grouping in subquery
  • Operators Subqueries multi-IN, ALL, ANY
  • How NULL values ​​are treated in subqueries

Operators collective

  • UNION operator
  • UNION ALL operator
  • INTERSECT operator
  • MINUS operator

Further Usage Of Joins

  • Revisit Joins
  • Combining Inner and Outer Joins
  • Partitioned Outer Joins
  • Hierarchical Queries

Further Usage Of Sub-Queries

  • Revisit sub-queries
  • Use of sub-queries as virtual tables/inline views and columns
  • Use of the WITH construction
  • Combining sub-queries and joins

Analytics functions

  • OVER clause
  • Partition Clause
  • Windowing Clause
  • Rank, Lead, Lag, First, Last functions

Retrieving data from multiple tables (if time at end)

  • Types of connectors
  • The use NATURAL JOIN
  • Aliases tables
  • Joins in the WHERE clause
  • INNER JOIN Inner join
  • External Merge LEFT, RIGHT, FULL OUTER JOIN
  • Cartesian product

Aggregate Functions (if time at end)

  • Revisit Group By function and Having clause
  • Group and Rollup
  • Group and Cube

Client Testimonials

★★★★★
★★★★★

Bookings, Prices and Enquiries

Guaranteed to run even with a single delegate!

Private Classroom

From £2500

Private Remote

From £2200 (103)

Public Classroom

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OCUP2 UML 2.5 Certification - Advanced Exam Preparation St Helier, Jersey, Channel Isles Mon, 2018-07-23 09:30 £1980 / £2930
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