When should I use composite indexes?
An example of an AI chatbot conversation about when to use composite indexes in databases.
What are composite indexes and when should I use them?
Composite indexes are indexes on multiple columns. You should use them when queries filter or sort by multiple columns.
Can you give me an example of a query that would benefit from a composite index?
Sure! A query like SELECT * FROM orders WHERE customer_id = ? AND order_date = ? would benefit from a composite index on both customer_id and order_date.
Are there any downsides to using composite indexes?
Yes, composite indexes can increase write times and consume more storage. It's important to balance read and write performance.
How do I decide which columns to include in a composite index?
Consider the columns most frequently used together in WHERE clauses or JOIN conditions. Prioritize those for your composite index.
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