Unlock the Power of SQL Server with LIKE and WHERE

SQL Server offers powerful tools for filtering data, and the combination of the WHERE clause with the LIKE instruction is particularly versatile for searching strings. This article explores the use of LIKE in SQL, focusing on the syntax of T-SQL, demonstrating how to filter data based on the start, content, or end of a string.

Whether you're looking for products whose code starts with, contains, or ends with "XY", the respective conditions in the WHERE clause will be: The "%" character serves as a wild card, representing any number of characters (including zero). It's essential to note that the second condition, WHERE CodiceProdotto LIKE '%XY%', captures codes that start or end with "XY".

By default, SQL Server searches are not case-sensitive, unless you use the COLLATE clause. For more advanced searches, SQL Server offers additional operators. While it's generally recommended to use LIKE with moderation for performance reasons, there is a common use case where LIKE is the optimal choice: when searching for rows where a column starts with a specific sequence of characters.

Source: https://dev.to/nicola-iantomasi/sql-server-usare-listruzione-like-allinterno-di-una-where-1cp7