AlterQuery  check_query_comment_column (children 2)
 ExpressionList (children 3)
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration first_column (children 1)
    Literal \'comment 1_3\'
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration second_column (children 1)
    Literal \'comment 2_3\'
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration third_column (children 1)
    Literal \'comment 3_3\'
 Identifier check_query_comment_column