CreateQuery dict_valexpr (children 3)
 Identifier dict_valexpr
 ExpressionList (children 4)
  DictionaryAttributeDeclaration id (children 1)
   DataType UInt64
  DictionaryAttributeDeclaration s (children 1)
   DataType String
  DictionaryAttributeDeclaration i32n (children 1)
   DataType Nullable (children 1)
    ExpressionList (children 1)
     DataType Int32
  DictionaryAttributeDeclaration u64 (children 1)
   DataType UInt64
 Dictionary definition (children 4)
  ExpressionList (children 1)
   Identifier id
  FunctionWithKeyValueArguments  clickhouse (children 1)
   ExpressionList (children 1)
    pair (children 1)
     Literal \'dict_src_valexpr\'
  Dictionary lifetime
  Dictionary layout (children 1)
   ExpressionList
