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

Add a new field to a table.

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

Change a field definition.

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

Drop a field.

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

Set the default value for a field.

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

Set a field to have no default value.