AlterQuery  test_alter_mixed (children 2)
 ExpressionList (children 8)
  AlterCommand DROP_COLUMN (children 1)
   Identifier a
  AlterCommand DROP_COLUMN (children 1)
   Identifier a
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration a (children 1)
    DataType Int64
  AlterCommand COMMENT_COLUMN (children 2)
   Identifier a
   Literal \'should be ignored\'
  AlterCommand RENAME_COLUMN (children 2)
   Identifier a
   Identifier a_renamed
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration b (children 2)
    DataType String
    Literal \'test\'
  AlterCommand DROP_COLUMN (children 1)
   Identifier c
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration c (children 1)
    DataType Float32
 Identifier test_alter_mixed
