ABAP Select data from SAP table HRESS_UN_CS_RSUBS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRESS_UN_CS_RSUBS
*  INTO TABLE @DATA(IT_HRESS_UN_CS_RSUBS2).
*--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_HRESS_UN_CS_RSUBS INDEX 1 INTO DATA(WA_HRESS_UN_CS_RSUBS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRESS_UN_CS_RSUBS>-SDATA = 1.
<HRESS_UN_CS_RSUBS>-ODATA = 1.
<HRESS_UN_CS_RSUBS>-P_DATE = 1.
<HRESS_UN_CS_RSUBS>-PR_AR = 1.
<HRESS_UN_CS_RSUBS>-QR_AR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRESS_UN_CS_RSUBS-PR_DT, sy-vline,
  WA_HRESS_UN_CS_RSUBS-QR_DT, sy-vline,
  WA_HRESS_UN_CS_RSUBS-PR_RT, sy-vline,
  WA_HRESS_UN_CS_RSUBS-QR_RT, sy-vline,
  WA_HRESS_UN_CS_RSUBS-PR_RA, sy-vline,
  WA_HRESS_UN_CS_RSUBS-QR_RA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRESS_UN_CS_RSUBS 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_HRESS_UN_CS_RSUBS 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_HRESS_UN_CS_RSUBS INTO WA_HRESS_UN_CS_RSUBS.


*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_HRESS_UN_CS_RSUBS_STR, 
SDATA TYPE STRING,
ODATA TYPE STRING,
P_DATE TYPE STRING,
PR_AR TYPE STRING,
QR_AR TYPE STRING,
PR_DT TYPE STRING,
QR_DT TYPE STRING,
PR_RT TYPE STRING,
QR_RT TYPE STRING,
PR_RA TYPE STRING,
QR_RA TYPE STRING,
PR_RACU TYPE STRING,
QR_RACU TYPE STRING,
PR_OSF TYPE STRING,
QR_OSF TYPE STRING,
PR_OS TYPE STRING,
QR_OS TYPE STRING,
PR_OSCU TYPE STRING,
QR_OSCU TYPE STRING,
PR_RD TYPE STRING,
QR_RD TYPE STRING,
PR_EI TYPE STRING,
QR_EI TYPE STRING,
PR_NB TYPE STRING,
QR_NB TYPE STRING,
PR_BFA TYPE STRING,
PR_BFCU TYPE STRING,
QR_BFA TYPE STRING,
QR_BFCU TYPE STRING,
P_RSBFA TYPE STRING,
P_WABFA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRESS_UN_CS_RSUBS_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_HRESS_UN_CS_RSUBS_STR-SDATA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-ODATA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-P_DATE sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_AR sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_AR sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_DT sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_DT sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_RT sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_RT sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_RA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_RA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_RACU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_RACU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_OSF sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_OSF sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_OS sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_OS sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_OSCU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_OSCU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_RD sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_RD sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_EI sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_EI sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_NB sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_NB sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_BFA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-PR_BFCU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_BFA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-QR_BFCU sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-P_RSBFA sy-vline 
WA_HRESS_UN_CS_RSUBS_STR-P_WABFA sy-vline      INTO ld_text SEPARATED BY SPACE.

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