How do I use wildcards in SQL?

How do I use wildcards in SQL?

Wildcards in SQL are special characters that allow you to match patterns in your queries. The most common wildcards are '%' and ''. The '%' wildcard matches any sequence of characters, while the '' wildcard matches a single character.

Can you give me an example of using '%' wildcard?

Sure! If you want to find all names that start with 'A', you can use the query: SELECT * FROM users WHERE name LIKE 'A%'; This will return all names that begin with 'A'.

What about the '_' wildcard?

The '_' wildcard is used to match a single character. For example, if you want to find names that have 'a' as the second character, you can use: SELECT * FROM users WHERE name LIKE '_a%'; This will return names like 'Mark' and 'Sara'.

Are there any other wildcards I should know about?

Those are the main wildcards in SQL. However, you can also combine them for more complex queries, like using both '%' and '_' together.