or ADD [COLUMN] (create_definition, create_definition,...)

or ADD INDEX [index_name] (index_col_name,...)

or ADD PRIMARY KEY (index_col_name,...)

or ADD UNIQUE [index_name] (index_col_name,...)

or ADD FULLTEXT [index_name] (index_col_name,...)

or ADD [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)

   [reference_definition]

or ALTER [COLUMN] col_name {SET DEFAULT literal | DROP DEFAULT}

or CHANGE [COLUMN] old_col_name create_definition

   [FIRST | AFTER column_name]

or MODIFY [COLUMN] create_definition [FIRST | AFTER column_name]

or DROP [COLUMN] col_name

or DROP PRIMARY KEY

or DROP INDEX index_name

or DISABLE KEYS

or ENABLE KEYS

or RENAME [TO] new_tbl_name

or ORDER BY col

or table_options