drop_view_stmt ::=
	'DROP' 'VIEW' table_name ( ( ',' table_name ) )* 'CASCADE'
	| 'DROP' 'VIEW' table_name ( ( ',' table_name ) )* 'RESTRICT'
	| 'DROP' 'VIEW' table_name ( ( ',' table_name ) )* 
	| 'DROP' 'VIEW' 'IF' 'EXISTS' table_name ( ( ',' table_name ) )* 'CASCADE'
	| 'DROP' 'VIEW' 'IF' 'EXISTS' table_name ( ( ',' table_name ) )* 'RESTRICT'
	| 'DROP' 'VIEW' 'IF' 'EXISTS' table_name ( ( ',' table_name ) )* 
