CreateQuery t0 (children 3)
 Identifier t0
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType Int
   ColumnDeclaration b (children 1)
    DataType Int
 Storage definition (children 3)
  Function ReplacingMergeTree
  Function tuple
  Set
