ABAP Select data from SAP table RJHAPSX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHAPSX
*  INTO TABLE @DATA(IT_RJHAPSX2).
*--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_RJHAPSX INDEX 1 INTO DATA(WA_RJHAPSX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHAPSX>-MANDT = 1.
<RJHAPSX>-AVM_NR = 1.
<RJHAPSX>-POS_NR = 1.
<RJHAPSX>-UPDATEFLAG = 1.
<RJHAPSX>-TERM_TYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHAPSX-ANFANG_PER, sy-vline,
  WA_RJHAPSX-BEARB, sy-vline,
  WA_RJHAPSX-TZUSMENGE, sy-vline,
  WA_RJHAPSX-DISPMENGE, sy-vline,
  WA_RJHAPSX-BERMENGE, sy-vline,
  WA_RJHAPSX-XBERMENGE_FIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHAPSX 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_RJHAPSX 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_RJHAPSX INTO WA_RJHAPSX.


*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_RJHAPSX-AVM_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAPSX-AVM_NR.
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_RJHAPSX_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
POS_NR TYPE STRING,
UPDATEFLAG TYPE STRING,
TERM_TYP TYPE STRING,
ANFANG_PER TYPE STRING,
BEARB TYPE STRING,
TZUSMENGE TYPE STRING,
DISPMENGE TYPE STRING,
BERMENGE TYPE STRING,
XBERMENGE_FIX TYPE STRING,
POSTMENGE TYPE STRING,
MUSTER_T TYPE STRING,
MUSTER_P TYPE STRING,
XFREMDBEIL TYPE STRING,
XRESTHSHLT TYPE STRING,
XTBEL_SI TYPE STRING,
XSI_WARTET TYPE STRING,
XUVTECH TYPE STRING,
XMUSTER_OK TYPE STRING,
XSI_VORH TYPE STRING,
MERKMAL0 TYPE STRING,
MERKMAL1 TYPE STRING,
MERKMAL2 TYPE STRING,
MERKMAL3 TYPE STRING,
MERKMAL4 TYPE STRING,
MERKMAL5 TYPE STRING,
MERKMAL6 TYPE STRING,
MERKMAL7 TYPE STRING,
MERKMAL8 TYPE STRING,
MERKMAL9 TYPE STRING,
PRODH TYPE STRING,
STICHW TYPE STRING,
INHK_KFM TYPE STRING,
SI_TYP TYPE STRING,
SI_GEWICHT TYPE STRING,
MEINHGEWBL TYPE STRING,
ANZSEITEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHAPSX_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_RJHAPSX_STR-MANDT sy-vline 
WA_RJHAPSX_STR-AVM_NR sy-vline 
WA_RJHAPSX_STR-POS_NR sy-vline 
WA_RJHAPSX_STR-UPDATEFLAG sy-vline 
WA_RJHAPSX_STR-TERM_TYP sy-vline 
WA_RJHAPSX_STR-ANFANG_PER sy-vline 
WA_RJHAPSX_STR-BEARB sy-vline 
WA_RJHAPSX_STR-TZUSMENGE sy-vline 
WA_RJHAPSX_STR-DISPMENGE sy-vline 
WA_RJHAPSX_STR-BERMENGE sy-vline 
WA_RJHAPSX_STR-XBERMENGE_FIX sy-vline 
WA_RJHAPSX_STR-POSTMENGE sy-vline 
WA_RJHAPSX_STR-MUSTER_T sy-vline 
WA_RJHAPSX_STR-MUSTER_P sy-vline 
WA_RJHAPSX_STR-XFREMDBEIL sy-vline 
WA_RJHAPSX_STR-XRESTHSHLT sy-vline 
WA_RJHAPSX_STR-XTBEL_SI sy-vline 
WA_RJHAPSX_STR-XSI_WARTET sy-vline 
WA_RJHAPSX_STR-XUVTECH sy-vline 
WA_RJHAPSX_STR-XMUSTER_OK sy-vline 
WA_RJHAPSX_STR-XSI_VORH sy-vline 
WA_RJHAPSX_STR-MERKMAL0 sy-vline 
WA_RJHAPSX_STR-MERKMAL1 sy-vline 
WA_RJHAPSX_STR-MERKMAL2 sy-vline 
WA_RJHAPSX_STR-MERKMAL3 sy-vline 
WA_RJHAPSX_STR-MERKMAL4 sy-vline 
WA_RJHAPSX_STR-MERKMAL5 sy-vline 
WA_RJHAPSX_STR-MERKMAL6 sy-vline 
WA_RJHAPSX_STR-MERKMAL7 sy-vline 
WA_RJHAPSX_STR-MERKMAL8 sy-vline 
WA_RJHAPSX_STR-MERKMAL9 sy-vline 
WA_RJHAPSX_STR-PRODH sy-vline 
WA_RJHAPSX_STR-STICHW sy-vline 
WA_RJHAPSX_STR-INHK_KFM sy-vline 
WA_RJHAPSX_STR-SI_TYP sy-vline 
WA_RJHAPSX_STR-SI_GEWICHT sy-vline 
WA_RJHAPSX_STR-MEINHGEWBL sy-vline 
WA_RJHAPSX_STR-ANZSEITEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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