CreateQuery t0 (children 3)
 Identifier t0
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration c0 (children 1)
    DataType Int8
   ColumnDeclaration c1 (children 1)
    DataType Int
 Storage definition (children 2)
  Function CollapsingMergeTree (children 1)
   ExpressionList (children 1)
    Identifier c0
  Identifier c1
