CreateQuery uuid (children 3)
 Identifier uuid
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration created_at (children 1)
    DataType DateTime
   ColumnDeclaration id (children 1)
    DataType UUID
 Storage definition (children 3)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier created_at
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier created_at
    Identifier id