Tailored SQL Query with Step-by-Step Explanation

Design an SQL query for the following scenario: You are working with a database that contains a table named TableName . This table has several columns, including ColumnName1 , ColumnName2 , and ColumnName3 . Your task is to retrieve records where ColumnName1 is greater than Value1 and ColumnName2 matches the pattern ' Pattern '. Additionally, sort the results by ColumnName3 in descending order. Provide the complete SQL query and explain each step of the query in simple terms to help understand its structure and logic.