CreateQuery 02815_first_line_vector (children 3)
 Identifier 02815_first_line_vector
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration n (children 1)
    DataType Int32
   ColumnDeclaration text (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree
  Identifier n
