How do I drop a composite index in MySQL?
To drop a non-primary key index, use the DROP INDEX command: DROP INDEX index_name ON table_name; The syntax requires the table name to be specified because MySQL allows index names to be reused on multiple tables.
How do I delete a key in phpMyAdmin?
4 Answers. Just open up the Structure tab on your phpmyadmin table. After the structure description, there should be a Indexes section where you’ll see all indexes, including your primary keys. There you’ll be able to either modify or remove any primary key you may have defined.
How do I delete full-text catalog?
Remove a full-text catalog from a database Right-click the full-text catalog that you want to remove, and then select Delete.
How do I get rid of full text search?
Select all the databases for which you want to delete the index. From the Tools pane, choose Tools > Database > Full Text Index. Select Delete.
How do you drop a composite index?
$table->dropIndex([‘column1’, ‘column2’]); For dropping composite key, we need to pass array type of parameter to dropIndex method. We’ve specified our both columns for which we want to drop compound index. This method is useful when indexes is created by passing an array of columns into an index method.
How do I know if full text search is enabled in SQL Server 2016?
Look at the list of services on the machine. If full text search is installed you’ll see a service named SQL Server FullText Search ([instance]) where [instance] will be the name of the SQL instance that it is associated with.
How do I delete a primary key?
Procedure
- To drop primary keys using the Control Center: Expand the object tree until you see the Tables folder. Right-click the table you want to modify, and select Alter from the pop-up menu.
- To drop a primary key using the command line, enter: ALTER TABLE name DROP PRIMARY KEY.
How do I delete a foreign key constraint in MySQL?
Dropping Foreign Key Constraints You can drop a foreign key constraint using the following ALTER TABLE syntax: ALTER TABLE tbl_name DROP FOREIGN KEY fk_symbol; If the FOREIGN KEY clause defined a CONSTRAINT name when you created the constraint, you can refer to that name to drop the foreign key constraint.