setSqlTypeInfo             package:RODBC             R Documentation

_S_p_e_c_i_f_y _o_r _Q_u_e_r_y _a _M_a_p_p_i_n_g _o_f _R _T_y_p_e_s _t_o _D_B_M_S _T_y_p_e_s

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

     Specify or retrieve a mapping of R types to DBMS datatypes.

_U_s_a_g_e:

     setSqlTypeInfo(driver, value)

     getSqlTypeInfo(driver)

_A_r_g_u_m_e_n_t_s:

  driver: A character string specifying the 'DBMS_name' as returned by
          'odbcGetInfo'.  Optional for 'getSqlTypeInfo'.

   value: A named list with character values.  This should have names
          '"double"', '"integer"', '"character"' and '"logical"', and
          values SQL types appropriate to the DBMS.

_D_e_t_a_i_l_s:

     This information is used by 'sqlSave' if it creates a table in the
     DBMS and is not overridden by arguments 'typeInfo' or 'varTypes'. 
     Mappings are included for MySQL, PostgreSQL, SQLite, Oracle,
     Mimer, DB2 on Windows, and the Microsoft SQL Server, Access, Excel
     and Dbase drivers.

     The SQL types chosen should be nullable to allow 'NA's to be
     represented.  (Bit and boolean types often are not.)

_V_a_l_u_e:

     For 'setSqlTypeInfo' none.

     For 'getSqlTypeInfo' with an argument, a named list.  Without an
     argument, a data frame.

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

     Brian Ripley

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

     'sqlTypeInfo', 'sqlSave'.

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

     ## Not run: 
     getSqlTypeInfo()
     getSqlTypeInfo("MySQL")
     setSqlTypeInfo("Microsoft SQL Server",
                    list(double="float", integer="int",
                         character="varchar(255)", logical="varchar(5)"))
     ## End(Not run)

