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ALTER TABLE `table` ADD INDEX `product_id_index` (`product_id`)
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CREATE INDEX index_name ON table_name(column1, column1,);
CREATE INDEX idx_uname ON users (first_name, last_Name);
ALTER TABLE users DROP INDEX idx_uname
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CREATE INDEX index_name ON table_name(column_name);
CREATE INDEX curd_user_email_index ON user_crud(email);