CreateQuery test_float64 (children 3)
 Identifier test_float64
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration data (children 2)
    DataType Float64
    Literal Float64_0
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList