How can an index be added to a MySQL database?

1 year ago
Jackson Davis
2 minutes

In MySQL database, there are several methods to add indexes:

  1. Create an index using the CREATE INDEX statement. The syntax is as follows:
  2. Generate an index named index_name for the column column_name in the table table_name.
  3. Add an index using the ALTER TABLE statement. The syntax is as follows:
  4. Add an index to a column in a table using the ALTER TABLE statement.
  5. Add an index directly in the CREATE TABLE statement when creating a table. Syntax is as follows:
  6. Create a table with a specified column and index the column for faster querying.
  7. Create a primary key index using the PRIMARY KEY keyword. It is a special type of unique index. The syntax is as follows:
  8. Create a table named “table_name” with a column named “column_name” of data type specified, set as the primary key.
  9. Create a unique index using the UNIQUE keyword. The unique index ensures that the values in the column are unique. The syntax is as follows:
  10. Create a table named table_name with a column named column_name with a unique constraint on column_name.
  11. Create a full-text index in the CREATE TABLE statement using the FULLTEXT keyword. Full-text indexes are used for conducting full-text searches in text data. The syntax is as follows:
  12. Define a new table with a specified column and include full-text indexing on that column.

It is important to note that adding indexes may impact the performance of insertion, updates, and deletion operations, so it is essential to choose the appropriate index strategy based on the actual situation.

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