Why are SQL indexes important for database performance?
SQL indexes are crucial because they significantly speed up data retrieval operations, making queries faster.
Can you explain how indexes work in SQL?
Indexes work like a book's index; they allow the database to find data without scanning the entire table.
What are the different types of indexes in SQL?
There are several types, including B-tree indexes, hash indexes, and full-text indexes, each serving different purposes.
How do I create an index in SQL?
You can create an index using the CREATE INDEX statement, specifying the table and columns to index.
Are there any downsides to using indexes?
Yes, while indexes speed up reads, they can slow down writes and consume additional disk space.
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