alter : alter_table table_name /owner/i /to/i NAME ';'
{ 1 }
+alter : alter_sequence NAME /owned/i /by/i column_name ';'
+ { 1 }
+
storage_type : /(plain|external|extended|main)/i
alter_default_val : SET default_val
alter_table : ALTER TABLE ONLY(?)
+alter_sequence : ALTER SEQUENCE
+
drop_column : DROP COLUMN(?)
alter_column : ALTER COLUMN(?)
SEMICOLON : /\s*;\n?/
+SEQUENCE : /sequence/i
+
INTEGER : /\d+/
WORD : /\w+/