List of lectures for the course SQL, 37 quest level on JavaRush

Getting to Know Indexes
SQL SELF
37 level,0 lecture
Find out what indexes are in databases, how they speed up searching for info, when you should use them, and how they affect your query performance. Real-life examples and tips for using indexes in PostgreSQL.
Open
Main Types of Indexes: B-TREE, HASH, GIN, GiST
SQL SELF
37 level,1 lecture
Find out what types of indexes exist in PostgreSQL, how they differ, what tasks they're good for, and how to use them right to speed up searching and processing data.
Open
Creating Indexes ( CREATE INDEX) and Indexing Options ( UNIQUE, CONCURRENTLY)
SQL SELF
37 level,2 lecture
Learn how to create indexes in PostgreSQL, use the UNIQUE and CONCURRENTLY options, what errors you might run into when indexing, and how to avoid them. Real-life examples and tips on optimizing your queries with indexes.
Open
Deleting and Modifying Indexes: DROP INDEX, REINDEX
SQL SELF
37 level,3 lecture
Learn how to properly delete and restore indexes in PostgreSQL using the DROP INDEX and REINDEX commands. This article covers reasons for deleting and restoring indexes, command syntax, practical examples, and tips for safely working with indexes to optimize your database performance.
Open
How Indexes Work: Data Structures and Search Algorithms
SQL SELF
37 level,4 lecture
Learn how indexes are built in PostgreSQL, why they make searching faster, how the B-TREE structure works, and when indexes are actually useful. Real-world examples and explanations for working efficiently with databases.
Open