SQL Pattern Matching with LIKE and Regular Expressions

Finding specific text patterns inside database columns is a vital skill for anyone working with data, yet standard queries often fall short when dealing with messy, real-world information. This text-based course teaches you how to construct precise queries to search, filter, and clean text data efficiently. You will start with foundational concepts of string storage and database searching before moving into practical pattern-matching techniques. By reading through clear explanations and structured SQL examples, you will transition from writing basic text filters to composing sophisticated regular expressions that solve complex data-cleansing challenges. What you'll learn: - Understand the foundational mechanics of how databases store and index text data - Master basic pattern matching using the LIKE and ILIKE operators alongside standard wildcards - Construct advanced search patterns using REGEXP and regular expression syntax to find complex string structures - Filter and clean messy database records by identifying anomalies, formatting errors, and specific text patterns - Optimize text-search queries to ensure they run efficiently even on larger datasets - Practice writing clean, readable, and maintainable SQL pattern queries through written text scenarios This course begins with core terminology and basic string manipulation concepts before guiding you step-by-step through wildcards, case-sensitivity rules, and regular expression syntax. It is designed for beginners who already know basic SQL SELECT statements and want to specialize in text-filtering techniques. No advanced programming or database administration experience is required. Start reading today to unlock the full analytical power of your text data.