ABAP Select data from SAP table /PLMB/S_EDESK_PARAM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMB/S_EDESK_PARAM 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 /PLMB/S_EDESK_PARAM. 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 /PLMB/S_EDESK_PARAM 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_/PLMB/S_EDESK_PARAM TYPE STANDARD TABLE OF /PLMB/S_EDESK_PARAM,
      WA_/PLMB/S_EDESK_PARAM TYPE /PLMB/S_EDESK_PARAM,
      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: </PLMB/S_EDESK_PARAM> TYPE /PLMB/S_EDESK_PARAM.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMB/S_EDESK_PARAM
  INTO TABLE IT_/PLMB/S_EDESK_PARAM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMB/S_EDESK_PARAM
*  INTO TABLE @DATA(IT_/PLMB/S_EDESK_PARAM2).
*--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_/PLMB/S_EDESK_PARAM INDEX 1 INTO DATA(WA_/PLMB/S_EDESK_PARAM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMB/S_EDESK_PARAM ASSIGNING </PLMB/S_EDESK_PARAM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMB/S_EDESK_PARAM>-CAD_SYSTEM = 1.
</PLMB/S_EDESK_PARAM>-APP_VIEW = 1.
</PLMB/S_EDESK_PARAM>-REF_HOST = 1.
</PLMB/S_EDESK_PARAM>-SESSIONID = 1.
</PLMB/S_EDESK_PARAM>-HOSTID = 1.

ENDLOOP.

LOOP AT IT_/PLMB/S_EDESK_PARAM INTO WA_/PLMB/S_EDESK_PARAM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMB/S_EDESK_PARAM-URL, sy-vline,
  WA_/PLMB/S_EDESK_PARAM-CLIENTURL, sy-vline,
  WA_/PLMB/S_EDESK_PARAM-PROXYURL, sy-vline,
  WA_/PLMB/S_EDESK_PARAM-DESTINATION, sy-vline,
  WA_/PLMB/S_EDESK_PARAM-EXIT_REASON, sy-vline,
  WA_/PLMB/S_EDESK_PARAM-RFCPROGRAMID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMB/S_EDESK_PARAM 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_/PLMB/S_EDESK_PARAM 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_/PLMB/S_EDESK_PARAM INTO WA_/PLMB/S_EDESK_PARAM.


*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_/PLMB/S_EDESK_PARAM_STR, 
CAD_SYSTEM TYPE STRING,
APP_VIEW TYPE STRING,
REF_HOST TYPE STRING,
SESSIONID TYPE STRING,
HOSTID TYPE STRING,
URL TYPE STRING,
CLIENTURL TYPE STRING,
PROXYURL TYPE STRING,
DESTINATION TYPE STRING,
EXIT_REASON TYPE STRING,
RFCPROGRAMID TYPE STRING,
RFCGWHOST TYPE STRING,
RFCGWSERVICE TYPE STRING,
SCENARIO TYPE STRING,
WSLPNAME TYPE STRING,
RFCSNCPNAME TYPE STRING,
RFCSNCQOP TYPE STRING,
WSLPNAMETPL TYPE STRING,
DESTINATIONTPL TYPE STRING,
CADGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMB/S_EDESK_PARAM_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_/PLMB/S_EDESK_PARAM_STR-CAD_SYSTEM sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-APP_VIEW sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-REF_HOST sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-SESSIONID sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-HOSTID sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-URL sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-CLIENTURL sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-PROXYURL sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-DESTINATION sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-EXIT_REASON sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-RFCPROGRAMID sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-RFCGWHOST sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-RFCGWSERVICE sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-SCENARIO sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-WSLPNAME sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-RFCSNCPNAME sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-RFCSNCQOP sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-WSLPNAMETPL sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-DESTINATIONTPL sy-vline 
WA_/PLMB/S_EDESK_PARAM_STR-CADGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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