DBIResult-class             package:DBI             R Documentation

_C_l_a_s_s _D_B_I_R_e_s_u_l_t

_D_e_s_c_r_i_p_t_i_o_n:

     Base class for all DBMS-specific result objects.

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     A virtual Class: No objects may be created from it.

_E_x_t_e_n_d_s:

     Class '"DBIObject"', directly.

_G_e_n_e_r_a_t_o_r:

     The main generator is 'dbSendQuery'.

_M_e_t_h_o_d_s:

          Fetching methods:

     _f_e_t_c_h 'signature(res = "DBIResult", n = "numeric")': ... 

     _f_e_t_c_h 'signature(res = "DBIResult", n = "missing")': ...  Close
          result set:

     _d_b_C_l_e_a_r_R_e_s_u_l_t 'signature(res = "DBIResult")': ... 

          Meta-data:

     _d_b_C_o_l_u_m_n_I_n_f_o 'signature(res = "DBIResult")': ... 

     _d_b_G_e_t_E_x_c_e_p_t_i_o_n 'signature(conn = "DBIResult")': ... 

     _d_b_G_e_t_I_n_f_o 'signature(dbObj = "DBIResult")': ... 

     _d_b_G_e_t_R_o_w_C_o_u_n_t 'signature(res = "DBIResult")': ... 

     _d_b_G_e_t_R_o_w_s_A_f_f_e_c_t_e_d 'signature(res = "DBIResult")': ... 

     _d_b_G_e_t_S_t_a_t_e_m_e_n_t 'signature(res = "DBIResult")': ... 

     _d_b_H_a_s_C_o_m_p_l_e_t_e_d 'signature(res = "DBIResult")': ... 

     _d_b_L_i_s_t_F_i_e_l_d_s 'signature(conn = "DBIResult", name = "missing")':
          ... 

     _s_u_m_m_a_r_y 'signature(object = "DBIResult")': ... 

     _c_o_e_r_c_e 'signature(from = "DBIConnection", to = "DBIResult")': ... 

_A_u_t_h_o_r(_s):

     R-SIG-DB

_R_e_f_e_r_e_n_c_e_s:

     See the Database Interface definition document 'DBI.pdf' in the
     base directory of this package or <URL:
     http://developer.r-project.org/db>.

_S_e_e _A_l_s_o:

     DBI classes: 'DBIObject-class' 'DBIDriver-class'
     'DBIConnection-class' 'DBIResult-class'

_E_x_a_m_p_l_e_s:

     ## Not run: 
      drv <- dbDriver("Oracle")
      con <- dbConnect(drv, "user/password@dbname")
      res <- dbSendQuery(con, "select * from LASERS where prdata > '2002-05-01'")
      summary(res)
      while(dbHasCompleted(res)){
         chunk <- fetch(res, n = 1000)
         process(chunk)
      }
     ## End(Not run)

