What are some effective indexing strategies for SQL databases?
An example of an AI chatbot conversation about indexing strategies for SQL databases.
What are some effective indexing strategies for SQL databases?
Effective indexing strategies include using B-trees, hash indexes, and covering indexes. It depends on your query patterns.
Can you explain what a covering index is?
A covering index is an index that contains all the columns needed for a query, allowing the database to retrieve data without accessing the table.
When should I use a hash index?
Use a hash index for equality searches where you need fast lookups, but remember it doesn't support range queries.
How do I decide which columns to index?
Consider indexing columns that are frequently used in WHERE clauses, JOIN conditions, or as part of an ORDER BY.
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