19 namespace Deveel.Data.Sql.Statements {
 
Drops the DEFAULT expression from a given column. 
Modifies a table by removing a given column. 
Adds a new constraint to the table. 
Drops a PRIMARY KEY constraint from a table. 
Alters a table column setting the DEFAULT expression. 
AlterTableActionType
The possible types of actions in a AlterTableAction expression. 
Adds a defined column to a table. 
Drops a named constraint from a table.