CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration id (children 1)
    DataType String
   ColumnDeclaration abc.1 (children 1)
    DataType String
   ColumnDeclaration abc.2 (children 1)
    DataType String
   ColumnDeclaration abc (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree
  Identifier id
