ABAP Select data from SAP table REVALB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REVALB
*  INTO TABLE @DATA(IT_REVALB2).
*--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_REVALB INDEX 1 INTO DATA(WA_REVALB2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REVALB-JIREC, sy-vline,
  WA_REVALB-RLDEPO_N, sy-vline,
  WA_REVALB-RANL_N, sy-vline,
  WA_REVALB-ASTUECK_N, sy-vline,
  WA_REVALB-BNOMINAL_N, sy-vline,
  WA_REVALB-RANL_OS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REVALB 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_REVALB 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_REVALB INTO WA_REVALB.


*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_REVALB-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVALB-RANL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EXCRT, internal->external for field FW_ANKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_REVALB-FW_ANKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVALB-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_REVALB-FW_BUKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVALB-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_REVALB-FW_BEKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVALB-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_REVALB_STR, 
BUKRS TYPE STRING,
RLDEPO TYPE STRING,
RANL TYPE STRING,
BBEZUGWR TYPE STRING,
BBEZUGHW TYPE STRING,
JIREC TYPE STRING,
RLDEPO_N TYPE STRING,
RANL_N TYPE STRING,
ASTUECK_N TYPE STRING,
BNOMINAL_N TYPE STRING,
RANL_OS TYPE STRING,
ASTUECK_OS TYPE STRING,
AJUNG TYPE STRING,
ABEZ TYPE STRING,
BBABD_AN TYPE STRING,
EBBABD_AN TYPE STRING,
BBABD_BU TYPE STRING,
EBBABD_BU TYPE STRING,
BJUNGD TYPE STRING,
EBJUNGD 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,
SCWHR 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_REVALB_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_REVALB_STR-BUKRS sy-vline 
WA_REVALB_STR-RLDEPO sy-vline 
WA_REVALB_STR-RANL sy-vline 
WA_REVALB_STR-BBEZUGWR sy-vline 
WA_REVALB_STR-BBEZUGHW sy-vline 
WA_REVALB_STR-JIREC sy-vline 
WA_REVALB_STR-RLDEPO_N sy-vline 
WA_REVALB_STR-RANL_N sy-vline 
WA_REVALB_STR-ASTUECK_N sy-vline 
WA_REVALB_STR-BNOMINAL_N sy-vline 
WA_REVALB_STR-RANL_OS sy-vline 
WA_REVALB_STR-ASTUECK_OS sy-vline 
WA_REVALB_STR-AJUNG sy-vline 
WA_REVALB_STR-ABEZ sy-vline 
WA_REVALB_STR-BBABD_AN sy-vline 
WA_REVALB_STR-EBBABD_AN sy-vline 
WA_REVALB_STR-BBABD_BU sy-vline 
WA_REVALB_STR-EBBABD_BU sy-vline 
WA_REVALB_STR-BJUNGD sy-vline 
WA_REVALB_STR-EBJUNGD sy-vline 
WA_REVALB_STR-FW_ANKURS sy-vline 
WA_REVALB_STR-FW_BUKURS sy-vline 
WA_REVALB_STR-FW_BEKURS sy-vline 
WA_REVALB_STR-KURS_CUM_P sy-vline 
WA_REVALB_STR-KURS_CUM_B sy-vline 
WA_REVALB_STR-KURS_CUM_D sy-vline 
WA_REVALB_STR-KURS_OS_B sy-vline 
WA_REVALB_STR-KURS_OS_D sy-vline 
WA_REVALB_STR-KURS_EX_B sy-vline 
WA_REVALB_STR-KURS_EX_P sy-vline 
WA_REVALB_STR-SCWHR sy-vline 
WA_REVALB_STR-BNOMINAL sy-vline 
WA_REVALB_STR-ASTUECK sy-vline 
WA_REVALB_STR-SBWHR sy-vline 
WA_REVALB_STR-SHWHR sy-vline 
WA_REVALB_STR-BKAUFWR sy-vline 
WA_REVALB_STR-BKAUFHW sy-vline 
WA_REVALB_STR-BBUCHWR sy-vline 
WA_REVALB_STR-BBUCHHW sy-vline 
WA_REVALB_STR-BKOSTWR sy-vline 
WA_REVALB_STR-BKOSTHW sy-vline 
WA_REVALB_STR-BKSTBWR sy-vline 
WA_REVALB_STR-BKSTBHW sy-vline 
WA_REVALB_STR-BKSTAWR sy-vline 
WA_REVALB_STR-BKSTAHW sy-vline 
WA_REVALB_STR-BACTLWR sy-vline 
WA_REVALB_STR-BACTLHW sy-vline 
WA_REVALB_STR-BWPBWWR sy-vline 
WA_REVALB_STR-BWPBWHW sy-vline 
WA_REVALB_STR-BFWBWHW sy-vline 
WA_REVALB_STR-BKOBWWR sy-vline 
WA_REVALB_STR-BKOBWHW sy-vline 
WA_REVALB_STR-BKOFBHW sy-vline 
WA_REVALB_STR-BWPAEWR sy-vline 
WA_REVALB_STR-BWPAEHW sy-vline 
WA_REVALB_STR-BFWAEHW sy-vline 
WA_REVALB_STR-BAMT1WR sy-vline 
WA_REVALB_STR-BAMT1HW sy-vline 
WA_REVALB_STR-BAMT2WR sy-vline 
WA_REVALB_STR-BAMT2HW sy-vline 
WA_REVALB_STR-BAMT3WR sy-vline 
WA_REVALB_STR-BAMT3HW sy-vline 
WA_REVALB_STR-BAMT4WR sy-vline 
WA_REVALB_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.