CreateQuery test_bm (children 3)
 Identifier test_bm
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration dim (children 1)
    DataType UInt64
   ColumnDeclaration id (children 1)
    DataType UInt64
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier dim
    Identifier id
  Set
