CreateQuery R4 (children 3)
 Identifier R4
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration D_ID (children 1)
    DataType UInt32
   ColumnDeclaration D_LookupCode (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier D_ID
  Set
