CreateQuery dtest (children 3)
 Identifier dtest
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration a (children 1)
    DataType Decimal (children 1)
     ExpressionList (children 2)
      Literal UInt64_18
      Literal UInt64_0
   ColumnDeclaration b (children 1)
    DataType Decimal (children 1)
     ExpressionList (children 2)
      Literal UInt64_18
      Literal UInt64_1
   ColumnDeclaration c (children 1)
    DataType Decimal (children 1)
     ExpressionList (children 2)
      Literal UInt64_36
      Literal UInt64_0
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
