ABAP Select data from SAP table REVAL_OS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REVAL_OS 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 REVAL_OS. 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 REVAL_OS 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_REVAL_OS TYPE STANDARD TABLE OF REVAL_OS,
      WA_REVAL_OS TYPE REVAL_OS,
      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: <REVAL_OS> TYPE REVAL_OS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REVAL_OS
*  INTO TABLE @DATA(IT_REVAL_OS2).
*--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_REVAL_OS INDEX 1 INTO DATA(WA_REVAL_OS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REVAL_OS>-BUKRS = 1.
<REVAL_OS>-RLDEPO = 1.
<REVAL_OS>-RANL = 1.
<REVAL_OS>-BBEZUGWR = 1.
<REVAL_OS>-BBEZUGHW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REVAL_OS-SCWHR, sy-vline,
  WA_REVAL_OS-SBWHR_N, sy-vline,
  WA_REVAL_OS-JIREC, sy-vline,
  WA_REVAL_OS-RLDEPO_N, sy-vline,
  WA_REVAL_OS-RANL_N, sy-vline,
  WA_REVAL_OS-ASTUECK_N, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REVAL_OS 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_REVAL_OS 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_REVAL_OS INTO WA_REVAL_OS.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REVAL_OS-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVAL_OS-RANL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field FW_ANKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_REVAL_OS-FW_ANKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVAL_OS-FW_ANKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FW_BUKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_REVAL_OS-FW_BUKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVAL_OS-FW_BUKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FW_BEKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_REVAL_OS-FW_BEKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVAL_OS-FW_BEKURS.
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_REVAL_OS_STR, 
BUKRS TYPE STRING,
RLDEPO TYPE STRING,
RANL TYPE STRING,
BBEZUGWR TYPE STRING,
BBEZUGHW TYPE STRING,
SCWHR TYPE STRING,
SBWHR_N TYPE STRING,
JIREC TYPE STRING,
RLDEPO_N TYPE STRING,
RANL_N TYPE STRING,
ASTUECK_N TYPE STRING,
BNOMINAL_N TYPE STRING,
FW_ANKURS TYPE STRING,
FW_BUKURS TYPE STRING,
FW_BEKURS TYPE STRING,
KURS_CUM_P TYPE STRING,
KURS_CUM_B TYPE STRING,
KURS_CUM_D TYPE STRING,
KURS_OS_B TYPE STRING,
KURS_OS_D TYPE STRING,
KURS_EX_B TYPE STRING,
KURS_EX_P TYPE STRING,
PBAKURS TYPE STRING,
SBAWHR TYPE STRING,
BBAKURS TYPE STRING,
BBARAWR TYPE STRING,
SBARAWR TYPE STRING,
BBARAHW TYPE STRING,
SZAHLWR TYPE STRING,
BZAHLWR TYPE STRING,
BZAHLHW TYPE STRING,
SBEZUG_WR TYPE STRING,
BBEZUG_WR TYPE STRING,
BBEZUG_HW TYPE STRING,
BNOMINAL TYPE STRING,
ASTUECK TYPE STRING,
SBWHR TYPE STRING,
SHWHR TYPE STRING,
BKAUFWR TYPE STRING,
BKAUFHW TYPE STRING,
BBUCHWR TYPE STRING,
BBUCHHW TYPE STRING,
BKOSTWR TYPE STRING,
BKOSTHW TYPE STRING,
BKSTBWR TYPE STRING,
BKSTBHW TYPE STRING,
BKSTAWR TYPE STRING,
BKSTAHW TYPE STRING,
BACTLWR TYPE STRING,
BACTLHW TYPE STRING,
BWPBWWR TYPE STRING,
BWPBWHW TYPE STRING,
BFWBWHW TYPE STRING,
BKOBWWR TYPE STRING,
BKOBWHW TYPE STRING,
BKOFBHW TYPE STRING,
BWPAEWR TYPE STRING,
BWPAEHW TYPE STRING,
BFWAEHW TYPE STRING,
BAMT1WR TYPE STRING,
BAMT1HW TYPE STRING,
BAMT2WR TYPE STRING,
BAMT2HW TYPE STRING,
BAMT3WR TYPE STRING,
BAMT3HW TYPE STRING,
BAMT4WR TYPE STRING,
BAMT4HW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REVAL_OS_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_REVAL_OS_STR-BUKRS sy-vline 
WA_REVAL_OS_STR-RLDEPO sy-vline 
WA_REVAL_OS_STR-RANL sy-vline 
WA_REVAL_OS_STR-BBEZUGWR sy-vline 
WA_REVAL_OS_STR-BBEZUGHW sy-vline 
WA_REVAL_OS_STR-SCWHR sy-vline 
WA_REVAL_OS_STR-SBWHR_N sy-vline 
WA_REVAL_OS_STR-JIREC sy-vline 
WA_REVAL_OS_STR-RLDEPO_N sy-vline 
WA_REVAL_OS_STR-RANL_N sy-vline 
WA_REVAL_OS_STR-ASTUECK_N sy-vline 
WA_REVAL_OS_STR-BNOMINAL_N sy-vline 
WA_REVAL_OS_STR-FW_ANKURS sy-vline 
WA_REVAL_OS_STR-FW_BUKURS sy-vline 
WA_REVAL_OS_STR-FW_BEKURS sy-vline 
WA_REVAL_OS_STR-KURS_CUM_P sy-vline 
WA_REVAL_OS_STR-KURS_CUM_B sy-vline 
WA_REVAL_OS_STR-KURS_CUM_D sy-vline 
WA_REVAL_OS_STR-KURS_OS_B sy-vline 
WA_REVAL_OS_STR-KURS_OS_D sy-vline 
WA_REVAL_OS_STR-KURS_EX_B sy-vline 
WA_REVAL_OS_STR-KURS_EX_P sy-vline 
WA_REVAL_OS_STR-PBAKURS sy-vline 
WA_REVAL_OS_STR-SBAWHR sy-vline 
WA_REVAL_OS_STR-BBAKURS sy-vline 
WA_REVAL_OS_STR-BBARAWR sy-vline 
WA_REVAL_OS_STR-SBARAWR sy-vline 
WA_REVAL_OS_STR-BBARAHW sy-vline 
WA_REVAL_OS_STR-SZAHLWR sy-vline 
WA_REVAL_OS_STR-BZAHLWR sy-vline 
WA_REVAL_OS_STR-BZAHLHW sy-vline 
WA_REVAL_OS_STR-SBEZUG_WR sy-vline 
WA_REVAL_OS_STR-BBEZUG_WR sy-vline 
WA_REVAL_OS_STR-BBEZUG_HW sy-vline 
WA_REVAL_OS_STR-BNOMINAL sy-vline 
WA_REVAL_OS_STR-ASTUECK sy-vline 
WA_REVAL_OS_STR-SBWHR sy-vline 
WA_REVAL_OS_STR-SHWHR sy-vline 
WA_REVAL_OS_STR-BKAUFWR sy-vline 
WA_REVAL_OS_STR-BKAUFHW sy-vline 
WA_REVAL_OS_STR-BBUCHWR sy-vline 
WA_REVAL_OS_STR-BBUCHHW sy-vline 
WA_REVAL_OS_STR-BKOSTWR sy-vline 
WA_REVAL_OS_STR-BKOSTHW sy-vline 
WA_REVAL_OS_STR-BKSTBWR sy-vline 
WA_REVAL_OS_STR-BKSTBHW sy-vline 
WA_REVAL_OS_STR-BKSTAWR sy-vline 
WA_REVAL_OS_STR-BKSTAHW sy-vline 
WA_REVAL_OS_STR-BACTLWR sy-vline 
WA_REVAL_OS_STR-BACTLHW sy-vline 
WA_REVAL_OS_STR-BWPBWWR sy-vline 
WA_REVAL_OS_STR-BWPBWHW sy-vline 
WA_REVAL_OS_STR-BFWBWHW sy-vline 
WA_REVAL_OS_STR-BKOBWWR sy-vline 
WA_REVAL_OS_STR-BKOBWHW sy-vline 
WA_REVAL_OS_STR-BKOFBHW sy-vline 
WA_REVAL_OS_STR-BWPAEWR sy-vline 
WA_REVAL_OS_STR-BWPAEHW sy-vline 
WA_REVAL_OS_STR-BFWAEHW sy-vline 
WA_REVAL_OS_STR-BAMT1WR sy-vline 
WA_REVAL_OS_STR-BAMT1HW sy-vline 
WA_REVAL_OS_STR-BAMT2WR sy-vline 
WA_REVAL_OS_STR-BAMT2HW sy-vline 
WA_REVAL_OS_STR-BAMT3WR sy-vline 
WA_REVAL_OS_STR-BAMT3HW sy-vline 
WA_REVAL_OS_STR-BAMT4WR sy-vline 
WA_REVAL_OS_STR-BAMT4HW sy-vline      INTO ld_text SEPARATED BY SPACE.

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