CreateQuery test_table (children 3)
 Identifier test_table
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration f1 (children 1)
    DataType Int32
   ColumnDeclaration f2 (children 1)
    DataType Int32
   ColumnDeclaration pk (children 1)
    DataType Int32
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier pk
  Identifier f1