SQL Indexes - Definition, Examples, and Tips
71.2 هزار بار بازدید -
2 سال پیش
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Indexes in SQL databases are a helpful feature to improve the performance of your queries.
There are a few different types of indexes. Some are common across different vendors, and some are exclusive to one vendor.
In this video, you’ll learn what an index is, see some examples of how they are processed, learn the syntax of creating different indexes, and see some SQL examples of creating indexes on tables.
You’ll also learn some tips on when to create indexes, and why you shouldn’t just create an index on every column.
Timestamps:
00:00 Introduction
00:40 What is an index?
02:13 A database index
02:48 B-tree index
05:01 B-tree index example SQL
06:22 Function-based index
08:12 Clustered index
09:00 Bitmap index
10:33 When should you create an index?
🎓 Learn and become confident in SQL: https://databasestar.mykajabi.com/sql...
Indexes in SQL databases are a helpful feature to improve the performance of your queries.
There are a few different types of indexes. Some are common across different vendors, and some are exclusive to one vendor.
In this video, you’ll learn what an index is, see some examples of how they are processed, learn the syntax of creating different indexes, and see some SQL examples of creating indexes on tables.
You’ll also learn some tips on when to create indexes, and why you shouldn’t just create an index on every column.
Timestamps:
00:00 Introduction
00:40 What is an index?
02:13 A database index
02:48 B-tree index
05:01 B-tree index example SQL
06:22 Function-based index
08:12 Clustered index
09:00 Bitmap index
10:33 When should you create an index?
2 سال پیش
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