CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration d (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Date
   ColumnDeclaration f1 (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration f2 (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration c (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int64
 Storage definition (children 3)
  Function SummingMergeTree
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier f1
    Identifier f2
    Identifier d
  Set
