CreateQuery summing_composite_key (children 3)
 Identifier summing_composite_key
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration d (children 1)
    DataType Date
   ColumnDeclaration k (children 1)
    DataType UInt64
   ColumnDeclaration FirstMap (children 1)
    DataType Nested (children 1)
     ExpressionList (children 3)
      NameTypePair k1 (children 1)
       DataType UInt32
      NameTypePair k2ID (children 1)
       DataType Int8
      NameTypePair s (children 1)
       DataType Float64
   ColumnDeclaration SecondMap (children 1)
    DataType Nested (children 1)
     ExpressionList (children 4)
      NameTypePair k1ID (children 1)
       DataType UInt64
      NameTypePair k2Key (children 1)
       DataType String
      NameTypePair k3Type (children 1)
       DataType Int32
      NameTypePair s (children 1)
       DataType Int64
 Storage definition (children 1)
  Function SummingMergeTree (children 1)
   ExpressionList (children 3)
    Identifier d
    Identifier k
    Literal UInt64_1