ABAP Select data from SAP table EDESKCOMMSESSIONPARAMETERS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDESKCOMMSESSIONPARAMETERS table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to EDESKCOMMSESSIONPARAMETERS. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the EDESKCOMMSESSIONPARAMETERS table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_EDESKCOMMSESSIONPARAMETERS TYPE STANDARD TABLE OF EDESKCOMMSESSIONPARAMETERS,
      WA_EDESKCOMMSESSIONPARAMETERS TYPE EDESKCOMMSESSIONPARAMETERS,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <EDESKCOMMSESSIONPARAMETERS> TYPE EDESKCOMMSESSIONPARAMETERS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EDESKCOMMSESSIONPARAMETERS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EDESKCOMMSESSIONPARAMETERS
  INTO TABLE IT_EDESKCOMMSESSIONPARAMETERS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDESKCOMMSESSIONPARAMETERS
*  INTO TABLE @DATA(IT_EDESKCOMMSESSIONPARAMETERS2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_EDESKCOMMSESSIONPARAMETERS INDEX 1 INTO DATA(WA_EDESKCOMMSESSIONPARAMETERS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EDESKCOMMSESSIONPARAMETERS ASSIGNING <EDESKCOMMSESSIONPARAMETERS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDESKCOMMSESSIONPARAMETERS>-SESSIONID = 1.
<EDESKCOMMSESSIONPARAMETERS>-RFCDESTINATION = 1.
<EDESKCOMMSESSIONPARAMETERS>-RFCDESTINATIONTPL = 1.
<EDESKCOMMSESSIONPARAMETERS>-RFCGWHOST = 1.
<EDESKCOMMSESSIONPARAMETERS>-RFCGWSERVICE = 1.

ENDLOOP.

LOOP AT IT_EDESKCOMMSESSIONPARAMETERS INTO WA_EDESKCOMMSESSIONPARAMETERS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDESKCOMMSESSIONPARAMETERS-RFCPROGRAMID, sy-vline,
  WA_EDESKCOMMSESSIONPARAMETERS-RFCSNCPNAME, sy-vline,
  WA_EDESKCOMMSESSIONPARAMETERS-RFCSNCQOP, sy-vline,
  WA_EDESKCOMMSESSIONPARAMETERS-WSLPNAME, sy-vline,
  WA_EDESKCOMMSESSIONPARAMETERS-WSLPNAMETPL, sy-vline,
  WA_EDESKCOMMSESSIONPARAMETERS-WSCLIENTURL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDESKCOMMSESSIONPARAMETERS you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_EDESKCOMMSESSIONPARAMETERS TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_EDESKCOMMSESSIONPARAMETERS INTO WA_EDESKCOMMSESSIONPARAMETERS.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EDESKCOMMSESSIONPARAMETERS_STR, 
SESSIONID TYPE STRING,
RFCDESTINATION TYPE STRING,
RFCDESTINATIONTPL TYPE STRING,
RFCGWHOST TYPE STRING,
RFCGWSERVICE TYPE STRING,
RFCPROGRAMID TYPE STRING,
RFCSNCPNAME TYPE STRING,
RFCSNCQOP TYPE STRING,
WSLPNAME TYPE STRING,
WSLPNAMETPL TYPE STRING,
WSCLIENTURL TYPE STRING,
WSPROXYURL TYPE STRING,
CRFCDESTINATION TYPE STRING,
CRFCDESTINATIONTPL TYPE STRING,
CRFCGWHOST TYPE STRING,
CRFCGWSERVICE TYPE STRING,
CRFCPROGRAMID TYPE STRING,
CRFCSNCPNAME TYPE STRING,
CRFCSNCQOP TYPE STRING,
CWSLPNAME TYPE STRING,
CWSLPNAMETPL TYPE STRING,
CWSCLIENTURL TYPE STRING,
CWSPROXYURL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDESKCOMMSESSIONPARAMETERS_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_EDESKCOMMSESSIONPARAMETERS_STR-SESSIONID sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCDESTINATION sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCDESTINATIONTPL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCGWHOST sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCGWSERVICE sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCPROGRAMID sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCSNCPNAME sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-RFCSNCQOP sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-WSLPNAME sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-WSLPNAMETPL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-WSCLIENTURL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-WSPROXYURL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCDESTINATION sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCDESTINATIONTPL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCGWHOST sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCGWSERVICE sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCPROGRAMID sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCSNCPNAME sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CRFCSNCQOP sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CWSLPNAME sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CWSLPNAMETPL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CWSCLIENTURL sy-vline 
WA_EDESKCOMMSESSIONPARAMETERS_STR-CWSPROXYURL sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.