SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 6)
    Identifier column
    Identifier type
    Identifier statistics
    Identifier estimates.cardinality
    Identifier estimates.min
    Identifier estimates.max
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.parts_columns
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'t_alter_auto_statistics\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Function currentDatabase (children 1)
        ExpressionList
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier active
       Literal UInt64_1
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier name
    OrderByElement (children 1)
     Identifier column
