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Course Outline

Relational Database Models

  • Structure of a relational database
  • Relational operators

Data Retrieval

  • Rules for writing SQL queries
  • Syntax for the SELECT statement
  • Selecting all columns
  • Queries involving arithmetic operations
  • Column aliases
  • Literals
  • Concatenation

Filtering Results

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

Sorting Data

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

SQL Functions

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

Aggregating Data Using Grouping Functions

  • Grouping functions
  • How grouping functions handle NULL values
  • Creating data groups using the GROUP BY clause
  • Grouping by multiple columns
  • Filtering grouped results using the HAVING clause

Retrieving Data from Multiple Tables

  • Types of joins
  • Table aliases
  • Joins defined in the WHERE clause
  • INNER JOIN
  • Outer joins (LEFT, RIGHT)
  • Cartesian product

Subqueries

  • Placing subqueries in the SELECT command
  • 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
 14 Hours

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