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 Duration 14 hours

Course Outline

Relational database models

  • Architecture of a relational database
  • Relational operators

Retrieving data

  • Best practices for constructing SQL queries
  • SELECT statement syntax
  • Selecting all columns
  • Performing arithmetic operations
  • Defining column aliases
  • Using literals
  • String concatenation

Filtering results

  • The WHERE clause
  • Comparison operators
  • LIKE condition
  • BETWEEN ... AND condition
  • IS NULL condition
  • IN condition
  • Logical operators
  • Combining multiple conditions within the WHERE clause
  • Operator precedence
  • DISTINCT clause

Sorting Data

  • The ORDER BY clause
  • Sorting by multiple columns or expressions

SQL Functions

  • Distinguishing between single-row and multi-row functions
  • Text, numeric, and date functions
  • Conversion functions
  • Nesting functions
  • Managing NULL values

Aggregating data with grouping functions

  • Overview of grouping functions
  • Handling NULL values in aggregation
  • Creating data groups using the GROUP BY clause
  • Grouping across multiple columns
  • Filtering grouped results with the HAVING clause

Fetching data from multiple tables

  • Different types of joins
  • Assigning table aliases
  • Executing joins within the WHERE clause
  • INNER JOIN
  • Outer joins (LEFT, RIGHT)
  • Cartesian product

Subqueries

  • Incorporating subqueries into the SELECT statement
  • Single-row and multi-row subqueries
  • Operators for single-row subqueries
  • Operators for multi-row subqueries (IN, ALL, ANY)

Set operators

  • UNION operator
  • INTERSECT operator
  • EXCEPT operator

Inserting, updating, and deleting data

  • INSERT command
  • UPDATE command
  • DELETE command

Transactions

Requirements

  • Basic computer proficiency
  • Familiarity with any operating system

Custom Corporate Training

Training solutions designed exclusively for businesses.

  • Customized Content: We adapt the syllabus and practical exercises to the real goals and needs of your project.
  • Flexible Schedule: Dates and times adapted to your team's agenda.
  • Format: Online (live), In-company (at your offices), or Hybrid.
Investment

Price per private group, online live training, starting from 3200 € + VAT*

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