ABAP Select data from SAP table RJHUAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHUAP
*  INTO TABLE @DATA(IT_RJHUAP2).
*--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_RJHUAP INDEX 1 INTO DATA(WA_RJHUAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHUAP>-AVM_NR = 1.
<RJHUAP>-FRD_AVM_NR = 1.
<RJHUAP>-POS_NR = 1.
<RJHUAP>-SATZART = 1.
<RJHUAP>-SART_REIFO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHUAP-POS_ART, sy-vline,
  WA_RJHUAP-PSTYV, sy-vline,
  WA_RJHUAP-XAGENAUFTR, sy-vline,
  WA_RJHUAP-KAMPAGNE, sy-vline,
  WA_RJHUAP-BRAN_PAM, sy-vline,
  WA_RJHUAP-XNACHBEARB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHUAP 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_RJHUAP 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_RJHUAP INTO WA_RJHUAP.


*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 ALPHA, internal->external for field AVM_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHUAP-AVM_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHUAP-AVM_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RAB4_MEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJHUAP-RAB4_MEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHUAP-RAB4_MEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZUS4_MEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJHUAP-ZUS4_MEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHUAP-ZUS4_MEIN.
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_RJHUAP_STR, 
AVM_NR TYPE STRING,
FRD_AVM_NR TYPE STRING,
POS_NR TYPE STRING,
SATZART TYPE STRING,
SART_REIFO TYPE STRING,
POS_ART TYPE STRING,
PSTYV TYPE STRING,
XAGENAUFTR TYPE STRING,
KAMPAGNE TYPE STRING,
BRAN_PAM TYPE STRING,
XNACHBEARB TYPE STRING,
XRESERV TYPE STRING,
RAB1_BETR TYPE STRING,
RAB1_GRUND TYPE STRING,
RAB2_BETR TYPE STRING,
RAB2_GRUND TYPE STRING,
RAB3_BETR TYPE STRING,
RAB3_GRUND TYPE STRING,
RAB4_BETR TYPE STRING,
RAB4_PEIN TYPE STRING,
RAB4_MEIN TYPE STRING,
RAB4_GRUND TYPE STRING,
RAB4_BKTYP TYPE STRING,
RAB5_BETR TYPE STRING,
RAB5_GRUND TYPE STRING,
RAB5_BKTYP TYPE STRING,
ZUS1_BETR TYPE STRING,
ZUS1_GRUND TYPE STRING,
ZUS2_BETR TYPE STRING,
ZUS2_GRUND TYPE STRING,
ZUS3_BETR TYPE STRING,
ZUS3_GRUND TYPE STRING,
ZUS4_BETR TYPE STRING,
ZUS4_PEIN TYPE STRING,
ZUS4_MEIN TYPE STRING,
ZUS4_GRUND TYPE STRING,
ZUS4_BKTYP TYPE STRING,
ZUS5_BETR TYPE STRING,
ZUS5_GRUND TYPE STRING,
ZUS5_BKTYP TYPE STRING,
FPR1_BETR TYPE STRING,
FPR1_GRUND TYPE STRING,
FPRG_BETR TYPE STRING,
FPRG_PEIN TYPE STRING,
FPRG_MEIN TYPE STRING,
FPRG_GRUND TYPE STRING,
WERBK_TYP TYPE STRING,
WERBK_KNZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHUAP_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_RJHUAP_STR-AVM_NR sy-vline 
WA_RJHUAP_STR-FRD_AVM_NR sy-vline 
WA_RJHUAP_STR-POS_NR sy-vline 
WA_RJHUAP_STR-SATZART sy-vline 
WA_RJHUAP_STR-SART_REIFO sy-vline 
WA_RJHUAP_STR-POS_ART sy-vline 
WA_RJHUAP_STR-PSTYV sy-vline 
WA_RJHUAP_STR-XAGENAUFTR sy-vline 
WA_RJHUAP_STR-KAMPAGNE sy-vline 
WA_RJHUAP_STR-BRAN_PAM sy-vline 
WA_RJHUAP_STR-XNACHBEARB sy-vline 
WA_RJHUAP_STR-XRESERV sy-vline 
WA_RJHUAP_STR-RAB1_BETR sy-vline 
WA_RJHUAP_STR-RAB1_GRUND sy-vline 
WA_RJHUAP_STR-RAB2_BETR sy-vline 
WA_RJHUAP_STR-RAB2_GRUND sy-vline 
WA_RJHUAP_STR-RAB3_BETR sy-vline 
WA_RJHUAP_STR-RAB3_GRUND sy-vline 
WA_RJHUAP_STR-RAB4_BETR sy-vline 
WA_RJHUAP_STR-RAB4_PEIN sy-vline 
WA_RJHUAP_STR-RAB4_MEIN sy-vline 
WA_RJHUAP_STR-RAB4_GRUND sy-vline 
WA_RJHUAP_STR-RAB4_BKTYP sy-vline 
WA_RJHUAP_STR-RAB5_BETR sy-vline 
WA_RJHUAP_STR-RAB5_GRUND sy-vline 
WA_RJHUAP_STR-RAB5_BKTYP sy-vline 
WA_RJHUAP_STR-ZUS1_BETR sy-vline 
WA_RJHUAP_STR-ZUS1_GRUND sy-vline 
WA_RJHUAP_STR-ZUS2_BETR sy-vline 
WA_RJHUAP_STR-ZUS2_GRUND sy-vline 
WA_RJHUAP_STR-ZUS3_BETR sy-vline 
WA_RJHUAP_STR-ZUS3_GRUND sy-vline 
WA_RJHUAP_STR-ZUS4_BETR sy-vline 
WA_RJHUAP_STR-ZUS4_PEIN sy-vline 
WA_RJHUAP_STR-ZUS4_MEIN sy-vline 
WA_RJHUAP_STR-ZUS4_GRUND sy-vline 
WA_RJHUAP_STR-ZUS4_BKTYP sy-vline 
WA_RJHUAP_STR-ZUS5_BETR sy-vline 
WA_RJHUAP_STR-ZUS5_GRUND sy-vline 
WA_RJHUAP_STR-ZUS5_BKTYP sy-vline 
WA_RJHUAP_STR-FPR1_BETR sy-vline 
WA_RJHUAP_STR-FPR1_GRUND sy-vline 
WA_RJHUAP_STR-FPRG_BETR sy-vline 
WA_RJHUAP_STR-FPRG_PEIN sy-vline 
WA_RJHUAP_STR-FPRG_MEIN sy-vline 
WA_RJHUAP_STR-FPRG_GRUND sy-vline 
WA_RJHUAP_STR-WERBK_TYP sy-vline 
WA_RJHUAP_STR-WERBK_KNZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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