ABAP Select data from SAP table RJHMSTAND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHMSTAND
*  INTO TABLE @DATA(IT_RJHMSTAND2).
*--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_RJHMSTAND INDEX 1 INTO DATA(WA_RJHMSTAND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHMSTAND>-VTNR = 1.
<RJHMSTAND>-MEINH = 1.
<RJHMSTAND>-AB_WEINH = 1.
<RJHMSTAND>-SAERBMO = 1.
<RJHMSTAND>-SAERBMM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHMSTAND-SAERBME, sy-vline,
  WA_RJHMSTAND-SAEBOMO, sy-vline,
  WA_RJHMSTAND-SAEBOMM, sy-vline,
  WA_RJHMSTAND-SAEBOME, sy-vline,
  WA_RJHMSTAND-SAEMRNRMO, sy-vline,
  WA_RJHMSTAND-SAEMRNRMM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHMSTAND 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_RJHMSTAND 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_RJHMSTAND INTO WA_RJHMSTAND.


*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 CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJHMSTAND-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHMSTAND-MEINH.
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_RJHMSTAND_STR, 
VTNR TYPE STRING,
MEINH TYPE STRING,
AB_WEINH TYPE STRING,
SAERBMO TYPE STRING,
SAERBMM TYPE STRING,
SAERBME TYPE STRING,
SAEBOMO TYPE STRING,
SAEBOMM TYPE STRING,
SAEBOME TYPE STRING,
SAEMRNRMO TYPE STRING,
SAEMRNRMM TYPE STRING,
SAEMRNRME TYPE STRING,
SAEMBNBMO TYPE STRING,
SAEMBNBMM TYPE STRING,
SAEMBNBME TYPE STRING,
SAERFRRMO TYPE STRING,
SAERFRRMM TYPE STRING,
SAERFRRME TYPE STRING,
SAEBFRMO TYPE STRING,
SAEBFRMM TYPE STRING,
SAEBFRME TYPE STRING,
SAEFRMO TYPE STRING,
SAEFRMM TYPE STRING,
SAEFRME TYPE STRING,
SAEMFRBMO TYPE STRING,
SAEMFRBMM TYPE STRING,
SAEMFRBME TYPE STRING,
SAEVBMO TYPE STRING,
SAEVBMM TYPE STRING,
SAEVBME TYPE STRING,
SAEMAMO TYPE STRING,
SAEMAMM TYPE STRING,
SAEMAME TYPE STRING,
SAEMRMO TYPE STRING,
SAEMRMM TYPE STRING,
SAEMRME TYPE STRING,
SAEMBMO TYPE STRING,
SAEMBMM TYPE STRING,
SAEMBME TYPE STRING,
SFKRBMO TYPE STRING,
SFKRBMM TYPE STRING,
SFKRBME TYPE STRING,
SFKBOMO TYPE STRING,
SFKBOMM TYPE STRING,
SFKBOME TYPE STRING,
SFKMRNRMO TYPE STRING,
SFKMRNRMM TYPE STRING,
SFKMRNRME TYPE STRING,
SFKMBNBMO TYPE STRING,
SFKMBNBMM TYPE STRING,
SFKMBNBME TYPE STRING,
SFKRFRRMO TYPE STRING,
SFKRFRRMM TYPE STRING,
SFKRFRRME TYPE STRING,
SFKBFRMO TYPE STRING,
SFKBFRMM TYPE STRING,
SFKBFRME TYPE STRING,
SFKFRMO TYPE STRING,
SFKFRMM TYPE STRING,
SFKFRME TYPE STRING,
SFKMFRBMO TYPE STRING,
SFKMFRBMM TYPE STRING,
SFKMFRBME TYPE STRING,
SFKVBMO TYPE STRING,
SFKVBMM TYPE STRING,
SFKVBME TYPE STRING,
SFKMAMO TYPE STRING,
SFKMAMM TYPE STRING,
SFKMAME TYPE STRING,
SFKMRMO TYPE STRING,
SFKMRMM TYPE STRING,
SFKMRME TYPE STRING,
SFKMBMO TYPE STRING,
SFKMBMM TYPE STRING,
SFKMBME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHMSTAND_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_RJHMSTAND_STR-VTNR sy-vline 
WA_RJHMSTAND_STR-MEINH sy-vline 
WA_RJHMSTAND_STR-AB_WEINH sy-vline 
WA_RJHMSTAND_STR-SAERBMO sy-vline 
WA_RJHMSTAND_STR-SAERBMM sy-vline 
WA_RJHMSTAND_STR-SAERBME sy-vline 
WA_RJHMSTAND_STR-SAEBOMO sy-vline 
WA_RJHMSTAND_STR-SAEBOMM sy-vline 
WA_RJHMSTAND_STR-SAEBOME sy-vline 
WA_RJHMSTAND_STR-SAEMRNRMO sy-vline 
WA_RJHMSTAND_STR-SAEMRNRMM sy-vline 
WA_RJHMSTAND_STR-SAEMRNRME sy-vline 
WA_RJHMSTAND_STR-SAEMBNBMO sy-vline 
WA_RJHMSTAND_STR-SAEMBNBMM sy-vline 
WA_RJHMSTAND_STR-SAEMBNBME sy-vline 
WA_RJHMSTAND_STR-SAERFRRMO sy-vline 
WA_RJHMSTAND_STR-SAERFRRMM sy-vline 
WA_RJHMSTAND_STR-SAERFRRME sy-vline 
WA_RJHMSTAND_STR-SAEBFRMO sy-vline 
WA_RJHMSTAND_STR-SAEBFRMM sy-vline 
WA_RJHMSTAND_STR-SAEBFRME sy-vline 
WA_RJHMSTAND_STR-SAEFRMO sy-vline 
WA_RJHMSTAND_STR-SAEFRMM sy-vline 
WA_RJHMSTAND_STR-SAEFRME sy-vline 
WA_RJHMSTAND_STR-SAEMFRBMO sy-vline 
WA_RJHMSTAND_STR-SAEMFRBMM sy-vline 
WA_RJHMSTAND_STR-SAEMFRBME sy-vline 
WA_RJHMSTAND_STR-SAEVBMO sy-vline 
WA_RJHMSTAND_STR-SAEVBMM sy-vline 
WA_RJHMSTAND_STR-SAEVBME sy-vline 
WA_RJHMSTAND_STR-SAEMAMO sy-vline 
WA_RJHMSTAND_STR-SAEMAMM sy-vline 
WA_RJHMSTAND_STR-SAEMAME sy-vline 
WA_RJHMSTAND_STR-SAEMRMO sy-vline 
WA_RJHMSTAND_STR-SAEMRMM sy-vline 
WA_RJHMSTAND_STR-SAEMRME sy-vline 
WA_RJHMSTAND_STR-SAEMBMO sy-vline 
WA_RJHMSTAND_STR-SAEMBMM sy-vline 
WA_RJHMSTAND_STR-SAEMBME sy-vline 
WA_RJHMSTAND_STR-SFKRBMO sy-vline 
WA_RJHMSTAND_STR-SFKRBMM sy-vline 
WA_RJHMSTAND_STR-SFKRBME sy-vline 
WA_RJHMSTAND_STR-SFKBOMO sy-vline 
WA_RJHMSTAND_STR-SFKBOMM sy-vline 
WA_RJHMSTAND_STR-SFKBOME sy-vline 
WA_RJHMSTAND_STR-SFKMRNRMO sy-vline 
WA_RJHMSTAND_STR-SFKMRNRMM sy-vline 
WA_RJHMSTAND_STR-SFKMRNRME sy-vline 
WA_RJHMSTAND_STR-SFKMBNBMO sy-vline 
WA_RJHMSTAND_STR-SFKMBNBMM sy-vline 
WA_RJHMSTAND_STR-SFKMBNBME sy-vline 
WA_RJHMSTAND_STR-SFKRFRRMO sy-vline 
WA_RJHMSTAND_STR-SFKRFRRMM sy-vline 
WA_RJHMSTAND_STR-SFKRFRRME sy-vline 
WA_RJHMSTAND_STR-SFKBFRMO sy-vline 
WA_RJHMSTAND_STR-SFKBFRMM sy-vline 
WA_RJHMSTAND_STR-SFKBFRME sy-vline 
WA_RJHMSTAND_STR-SFKFRMO sy-vline 
WA_RJHMSTAND_STR-SFKFRMM sy-vline 
WA_RJHMSTAND_STR-SFKFRME sy-vline 
WA_RJHMSTAND_STR-SFKMFRBMO sy-vline 
WA_RJHMSTAND_STR-SFKMFRBMM sy-vline 
WA_RJHMSTAND_STR-SFKMFRBME sy-vline 
WA_RJHMSTAND_STR-SFKVBMO sy-vline 
WA_RJHMSTAND_STR-SFKVBMM sy-vline 
WA_RJHMSTAND_STR-SFKVBME sy-vline 
WA_RJHMSTAND_STR-SFKMAMO sy-vline 
WA_RJHMSTAND_STR-SFKMAMM sy-vline 
WA_RJHMSTAND_STR-SFKMAME sy-vline 
WA_RJHMSTAND_STR-SFKMRMO sy-vline 
WA_RJHMSTAND_STR-SFKMRMM sy-vline 
WA_RJHMSTAND_STR-SFKMRME sy-vline 
WA_RJHMSTAND_STR-SFKMBMO sy-vline 
WA_RJHMSTAND_STR-SFKMBMM sy-vline 
WA_RJHMSTAND_STR-SFKMBME sy-vline      INTO ld_text SEPARATED BY SPACE.

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