SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_distr (alias left)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_distr (alias right)
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier left.id
        Identifier right.id
   Function and (children 1)
    ExpressionList (children 2)
     Function has (children 1)
      ExpressionList (children 2)
       Identifier right.data.arr1
       Literal \'s3\'
     Function has (children 1)
      ExpressionList (children 2)
       Identifier right.data.arr2
       Literal UInt64_42
   Set
