CreateQuery database_123456789abcde tbl (children 4)
 Identifier database_123456789abcde
 Identifier tbl
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType UInt64
   ColumnDeclaration b (children 1)
    DataType UInt64
  ExpressionList (children 1)
   Index (children 2)
    Identifier b
    Function minmax (children 1)
     ExpressionList
 Storage definition (children 2)
  Function MergeTree
  Identifier a
