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Learn how to create indexes in MySQL tables to speed up data retrieval. See the syntax, examples and differences between CREATE INDEX and CREATE UNIQUE INDEX.
Learn how to create indexes on existing tables with CREATE INDEX, including column prefixes, functional key parts, unique indexes, full-text indexes, multi-valued indexes, and spatial indexes. See syntax, options, and examples for different types of indexes.
In this tutorial, you will learn about indexes and how to use the MySQL CREATE INDEX statement to add an index to a table.
Creating indexes – introduce the index concept and show you how to create an index for one or more columns of a table. Removing indexes – show you how to remove an existing index of a table. Listing table indexes – provide you with a statement to list all indexes or specific indexes of a table.
You can use this syntax to add an index and control the kind of index (HASH or BTREE). create index your_index_name on your_table_name(your_column_name) using HASH; or. create index your_index_name on your_table_name(your_column_name) using BTREE;
Learn how MySQL uses indexes to find rows with specific column values quickly and efficiently. See examples of index usage for WHERE, JOIN, ORDER BY, GROUP BY, and MIN() or MAX() operations.
4 sty 2023 · Learn what indexes are, how to create them, and how they can improve the performance of SQL queries. Follow the steps to create a sample database and table, and practice using indexes on different columns.
