What are the types of indexes in SQL?
An example of an AI chatbot conversation about types of SQL indexes.
What are the different types of indexes in SQL?
In SQL, the main types of indexes are: B-tree indexes, bitmap indexes, unique indexes, and full-text indexes.
Can you explain B-tree indexes?
B-tree indexes are balanced tree structures that maintain sorted data and allow for efficient retrieval, insertion, and deletion.
What about bitmap indexes? How do they work?
Bitmap indexes use bit arrays to represent the presence or absence of a value in a column, making them efficient for columns with low cardinality.
Are unique indexes different from regular indexes?
Yes, unique indexes ensure that all values in the indexed column are distinct, preventing duplicate entries.
When should I use a full-text index?
Full-text indexes are ideal for searching large text fields, allowing for complex queries like searching for words or phrases.
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