How much SQL do you know? Test your knowledge with this crossword!
Indexes are one of the most misused and misunderstood entities in physical database design. In this article, we’ll look at basic database indexes and their role in database development.
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SQL wildcard allows us to filter data matching certain patterns in SQL. We use wildcards with the LIKE operator in the WHERE clause of an SQL query to filter data. In this beginner’s article, we’ll look at everything you need to know about basic SQL wildcard.
If you plan to learn SQL online but aren’t sure where to start, you’re in the right place. I evaluated the top 7 ranked SQL online courses to help you find the right solution.
Sometimes, SQL queries return lots of data you don’t need. In this article, we’ll look at a simple example of filtering SQL queries to reduce the complexity of your data.