DatabaseSchema_mysql::addIndex in core/includes/database/mysql/schema.inc

Add an index.

DatabaseSchema_mysql::addPrimaryKey in core/includes/database/mysql/schema.inc

Add a primary key.

DatabaseSchema_mysql::addUniqueKey in core/includes/database/mysql/schema.inc

Add a unique key.

DatabaseSchema_mysql::createKeysSql in core/includes/database/mysql/schema.inc

Generates a string suitable for creating MySQL table keys.