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Course Outline

Relational Database Models

  • Architecture of a relational database
  • Relational operators

Data Retrieval

  • Guidelines for writing SQL queries
  • SELECT statement syntax
  • Retrieving all columns
  • Performing arithmetic operations in queries
  • Column aliases
  • Literals
  • String concatenation

Filtering Results

  • The WHERE clause
  • Comparison operators
  • LIKE pattern matching
  • BETWEEN ... AND range conditions
  • IS NULL checks
  • IN list conditions
  • Logical operators
  • Combining multiple conditions in the WHERE clause
  • Operator precedence rules
  • DISTINCT keyword usage

Organizing 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
  • Function nesting
  • Managing NULL values

Aggregating Data with Grouping Functions

  • Grouping functions overview
  • Handling NULL values within grouping functions
  • 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 implemented within the WHERE clause
  • INNER JOIN operations
  • Outer joins: LEFT and RIGHT
  • Cartesian products

Subqueries

  • Placing subqueries within the SELECT command
  • Single-row and multi-row subqueries
  • Operators for single-row subqueries
  • Operators for multi-row subqueries: IN, ALL, and ANY

Set Operators

  • UNION operator
  • INTERSECT operator
  • EXCEPT operator

Modifying Data: Insert, Update, and Delete

  • INSERT command
  • UPDATE command
  • DELETE command

Transactions

Requirements

  • Basic computer proficiency
  • Familiarity with any operating system
 14 Hours

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