Gain the skills to maximise the potential of SQL, formulate powerful, complex queries, and avoid common errors and pitfalls. This SQL Queries training course provides an understanding of possibilities and potential risks that could affect your organisation and is intended for users and developers who want to learn how to use the power of SQL queries for retrieving content from SQL Server databases.

Utbildningsmål

Gain the skills to maximise the potential of SQL, formulate powerful, complex queries, and avoid common errors and pitfalls. This SQL Queries training course provides an understanding of possibilities and potential risks that could affect your organisation and is intended for users and developers who want to learn how to use the power of SQL queries for retrieving content from SQL Server databases.

• Select the most efficient solution to complex SQL problems.
• Apply joins and subqueries.
• Identify and avoid common error situations.
• Ensure that correct queries continue to work correctly in the future.
• Produce test data for thorough and complete testing.

Förkunskaper

• Relational database theory and concepts.
• Tables and columns.
• Primary and foreign keys.
• The basics of SELECT statements.
• Using Management Studio to enter, edit, and execute SQL statements.

Innehåll

• Dealing with NULL-value problems
• Combining tables with inner and outer joins
• Handling self-contained and correlated subqueries
• Ensuring complete and correct join conditions
• Avoiding ambiguous columns
• Guaranteeing single-row subqueries

Kursen levereras genom utbildningspartner: Learning Tree