CreateQuery mt (children 3)
 Identifier mt
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id1 (children 1)
    DataType Int8
   ColumnDeclaration id2 (children 1)
    DataType Int8
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList