CreateQuery tab1 (children 3)
 Identifier tab1
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration v1 (children 1)
    DataType UInt32
   ColumnDeclaration v2 (children 1)
    DataType UInt32
 Storage definition (children 3)
  Function MergeTree
  Identifier id
  Set
