CreateQuery flows (children 3)
 Identifier flows
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration SrcAS (children 1)
    DataType UInt32
   ColumnDeclaration Bytes (children 1)
    DataType UInt64
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList