ABAP Select data from SAP table RHLDAPP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RHLDAPP 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 RHLDAPP. 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 RHLDAPP 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_RHLDAPP TYPE STANDARD TABLE OF RHLDAPP,
      WA_RHLDAPP TYPE RHLDAPP,
      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: <RHLDAPP> TYPE RHLDAPP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RHLDAPP
*  INTO TABLE @DATA(IT_RHLDAPP2).
*--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_RHLDAPP INDEX 1 INTO DATA(WA_RHLDAPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RHLDAPP>-OTYPE = 1.
<RHLDAPP>-OBJID = 1.
<RHLDAPP>-EDITNAME = 1.
<RHLDAPP>-LASTNAME = 1.
<RHLDAPP>-FIRSTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RHLDAPP-MIDDLENAME, sy-vline,
  WA_RHLDAPP-DESCRIPTION, sy-vline,
  WA_RHLDAPP-TITLE, sy-vline,
  WA_RHLDAPP-DEPARTMENT, sy-vline,
  WA_RHLDAPP-OFFICE_BLDG, sy-vline,
  WA_RHLDAPP-OFFICE_ROOM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RHLDAPP 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_RHLDAPP 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_RHLDAPP INTO WA_RHLDAPP.


*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.

*Conversion exit SXIDN, internal->external for field FAX
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_RHLDAPP-FAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHLDAPP-FAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field MAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_RHLDAPP-MAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHLDAPP-MAIL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field PHONE_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_RHLDAPP-PHONE_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHLDAPP-PHONE_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field MOBILE
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_RHLDAPP-MOBILE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHLDAPP-MOBILE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field PAGER
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_RHLDAPP-PAGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RHLDAPP-PAGER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_RHLDAPP_STR, 
OTYPE TYPE STRING,
OBJID TYPE STRING,
EDITNAME TYPE STRING,
LASTNAME TYPE STRING,
FIRSTNAME TYPE STRING,
MIDDLENAME TYPE STRING,
DESCRIPTION TYPE STRING,
TITLE TYPE STRING,
DEPARTMENT TYPE STRING,
OFFICE_BLDG TYPE STRING,
OFFICE_ROOM TYPE STRING,
FAX TYPE STRING,
MAIL TYPE STRING,
PHONE_NUMBER TYPE STRING,
MOBILE TYPE STRING,
PAGER TYPE STRING,
HOMEPHONE TYPE STRING,
STREETADDRESS TYPE STRING,
LOCALITY TYPE STRING,
DISTRICT TYPE STRING,
POSTALCODE TYPE STRING,
STATE TYPE STRING,
COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RHLDAPP_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_RHLDAPP_STR-OTYPE sy-vline 
WA_RHLDAPP_STR-OBJID sy-vline 
WA_RHLDAPP_STR-EDITNAME sy-vline 
WA_RHLDAPP_STR-LASTNAME sy-vline 
WA_RHLDAPP_STR-FIRSTNAME sy-vline 
WA_RHLDAPP_STR-MIDDLENAME sy-vline 
WA_RHLDAPP_STR-DESCRIPTION sy-vline 
WA_RHLDAPP_STR-TITLE sy-vline 
WA_RHLDAPP_STR-DEPARTMENT sy-vline 
WA_RHLDAPP_STR-OFFICE_BLDG sy-vline 
WA_RHLDAPP_STR-OFFICE_ROOM sy-vline 
WA_RHLDAPP_STR-FAX sy-vline 
WA_RHLDAPP_STR-MAIL sy-vline 
WA_RHLDAPP_STR-PHONE_NUMBER sy-vline 
WA_RHLDAPP_STR-MOBILE sy-vline 
WA_RHLDAPP_STR-PAGER sy-vline 
WA_RHLDAPP_STR-HOMEPHONE sy-vline 
WA_RHLDAPP_STR-STREETADDRESS sy-vline 
WA_RHLDAPP_STR-LOCALITY sy-vline 
WA_RHLDAPP_STR-DISTRICT sy-vline 
WA_RHLDAPP_STR-POSTALCODE sy-vline 
WA_RHLDAPP_STR-STATE sy-vline 
WA_RHLDAPP_STR-COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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