AlterQuery  test_table (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 2)
   ColumnDeclaration y (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType String
    Literal Array_[\'qwqw\']
   Identifier x
 Identifier test_table
