Search results
To delete an existing index from a table, you use the DROP INDEX statement as follows: DROP INDEX index_name ON table_name [algorithm_option | lock_option]; Code language: SQL (Structured Query Language) ( sql )
28 cze 2024 · The DROP INDEX statement in MySQL is used to delete an existing index from a table. Removing unnecessary or redundant indexes can help optimize database performance and manage storage effectively. Syntax of DROP INDEX: The basic syntax for the DROP INDEX statement is as follows: DROP INDEX index_name ON table_name;
The DROP INDEX command is used to delete an index in a table. MS Access: DROP INDEX index_name ON table_name; SQL Server: DROP INDEX table_name.index_name; DB2/Oracle: DROP INDEX index_name; MySQL: ALTER TABLE table_name.
DROP INDEX drops the index named index_name from the table tbl_name. This statement is mapped to an ALTER TABLE statement to drop the index. See Section 15.1.9, “ALTER TABLE Statement” .
ALTER TABLE {your_table_name} DROP INDEX {your_index_name} OR. DROP INDEX {your_index_name} ON {your_tbl_name}
Example. Here’s a simple example of using DROP INDEX: DROP INDEX idx_name ON employees; In this example, the index named idx_name on the employees table is dropped. If you want to remove multiple indexes in a single statement, you can use the following syntax: DROP INDEX [index_name_1, index_name_2, ...] ON table_name; For instance:
The DROP INDEX statement in MySQL is used to delete an index from a table. Syntax. Following is the syntax to drop an index using DROP INDEX statement −. DROP INDEX index_name ON table_name; Example. In this example, we first create a new table CUSTOMERS and adding an index to one of its columns (AGE) using the following CREATE TABLE query −.
