What are the different types of SQL indexing?
There are several types of SQL indexing, including B-tree, bitmap, unique, and full-text indexes. Each serves different purposes.
Can you explain B-tree indexes?
B-tree indexes are the most common type. They maintain a balanced tree structure, allowing for efficient data retrieval.
What about bitmap indexes?
Bitmap indexes are useful for columns with a limited number of distinct values. They use bitmaps to represent the presence of values.
When should I use a unique index?
A unique index ensures that all values in a column are different. It's useful for enforcing data integrity.
What is a full-text index?
A full-text index allows for efficient searching of text data within a column, supporting complex queries like natural language searches.
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