Access SQL

Access SQL training course

SQL is a computer language adopted in most database systems. Through SQL statements, data analysts can perform data operations such as inserting, deleting, searching and computing data. The speed and repeatability are the strong reasons for data analysts using SQL to process routine operations work.

This SQL training course is conducted under the Access environment because of its popularity. It is also suitable for other database systems users.

Access SQL training course

What you’ll learn

An Overview of Relational Databases

  • The Role of the Database Server
  • Interacting with a Database Server: The Client
  • Databases, Schemas, Tables, Rows and Columns
  • Primary Keys and Foreign Keys Explained
  • Introducing Data Types: Character, Numeric, Date and Time

Introducing SQL

  • Creating and Editing SQL
  • About Statements, Batches and Scripts
  • Executing and Parsing SQL Scripts
  • Using Comments
  • SQL Syntax and The Rules of SQL
  • About Keywords, Identifiers, Operators, Whitespace and Case
  • About the Semi Colon
  • SQL Conventions and Good Practice

Retrieving Data with SQL

  • Introducing Queries: The SELECT Statement
  • The Clauses of the SELECT Statement
  • About Optional Clauses and Mandatory Clauses
  • Using FROM to Specify the Source Table(s)
  • Retrieving Entire Tables
  • Retrieving Specific Columns
  • Using Column Aliases to Rename Columns
  • Performing Calculations
  • Using Numeric and String Operators to Create Derived Output
  • Ways of Limiting the Output
  • Using ORDER BY to Sort the Output

Using WHERE to Filter Results

  • Working with Comparison Operators (=, >= etc)
  • Numeric and String Based Filtering
  • Filtering Based on Calculations
  • Eliminating Duplicate Results with DISTINCT
  • Extending Filters with AND and OR
  • Range Filtering using BETWEEN and IN
  • NULL and its Implications Explained
  • Matching Patterns with LIKE

Getting Results From Multiple Tables

  • Joins Explained
  • The Different Types of Joins
  • Creating an Inner Join: WHERE Syntax
  • Creating an Inner Join: INNER JOIN Syntax
  • Table Aliases
  • Joining a Table to Itself
  • Outer Joins

Using Standard SQL Functions

  • How to Use Standard SQL Functions to Modify Results
  • Mathematical, String and Conversion Functions
  • Functions for Modifying and Calculating Dates
  • Formatting Numbers to Two Decimal Places
  • Replacing NULL with a Specific Value
  • Using Standard Functions in WHERE
  • Using CASE to Specify Output Conditions
  • Manipulating Dates

Grouping and Summarizing Results

  • Using Aggregate Functions (MAX(), SUM(), AVG(), COUNT() etc)
  • The Way Aggregate Functions Work
  • Using GROUP BY to Group Results
  • The Need for HAVING: Filtering the Result Table

Inserting, Updating and Deleting Data

  • Inserting Single Rows
  • Inserting Multiple Rows
  • Inserting Rows by Column Position
  • Inserting Rows by Column Name
  • Dealing with Auto-Incrementing Values
  • Dealing with Nulls when Inserting
  • Inserting Data from one Table into Another
  • Updating Data
  • Deleting Data

ASQ4087 - 廣東話 22 Aug enrol
ASQ4082 - 廣東話 24 Aug enrol
ASQ4088 - 廣東話 26 Aug enrol
ASQ4092 - Eng 12 Sep enrol
ASQ4101 - 廣東話 21 Oct enrol
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