CreateQuery test_table_string (children 4)
 Identifier test_table_string
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType String
   ColumnDeclaration value (children 1)
    DataType UInt16
 Storage definition (children 1)
  Function Memory (children 1)
   ExpressionList
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Function concat (children 1)
      ExpressionList (children 2)
       Literal \'foo\'
       Function CAST (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal \'String\'
     Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal Float64_100000