ABAP Select data from SAP table REVALD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REVALD
*  INTO TABLE @DATA(IT_REVALD2).
*--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_REVALD INDEX 1 INTO DATA(WA_REVALD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REVALD>-BUKRS = 1.
<REVALD>-RLDEPO = 1.
<REVALD>-RANL = 1.
<REVALD>-SANLF = 1.
<REVALD>-BNOMINAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REVALD-ASTUECK, sy-vline,
  WA_REVALD-SBWHR, sy-vline,
  WA_REVALD-SHWHR, sy-vline,
  WA_REVALD-BKAUFWR, sy-vline,
  WA_REVALD-BKAUFHW, sy-vline,
  WA_REVALD-BBUCHWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REVALD 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_REVALD 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_REVALD INTO WA_REVALD.


*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_REVALD-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REVALD-RANL.
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_REVALD_STR, 
BUKRS TYPE STRING,
RLDEPO TYPE STRING,
RANL TYPE STRING,
SANLF 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,
FW_TAGWERT TYPE STRING,
HW_TAGWERT TYPE STRING,
DEVAL TYPE STRING,
SKURS_KZ TYPE STRING,
SBWHR_KZ TYPE STRING,
SHWHR_KZ TYPE STRING,
PDURA_ANW TYPE STRING,
PMDURA_ANW TYPE STRING,
PDURA_BUW TYPE STRING,
BBARWERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REVALD_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_REVALD_STR-BUKRS sy-vline 
WA_REVALD_STR-RLDEPO sy-vline 
WA_REVALD_STR-RANL sy-vline 
WA_REVALD_STR-SANLF sy-vline 
WA_REVALD_STR-BNOMINAL sy-vline 
WA_REVALD_STR-ASTUECK sy-vline 
WA_REVALD_STR-SBWHR sy-vline 
WA_REVALD_STR-SHWHR sy-vline 
WA_REVALD_STR-BKAUFWR sy-vline 
WA_REVALD_STR-BKAUFHW sy-vline 
WA_REVALD_STR-BBUCHWR sy-vline 
WA_REVALD_STR-BBUCHHW sy-vline 
WA_REVALD_STR-BKOSTWR sy-vline 
WA_REVALD_STR-BKOSTHW sy-vline 
WA_REVALD_STR-BKSTBWR sy-vline 
WA_REVALD_STR-BKSTBHW sy-vline 
WA_REVALD_STR-BKSTAWR sy-vline 
WA_REVALD_STR-BKSTAHW sy-vline 
WA_REVALD_STR-BACTLWR sy-vline 
WA_REVALD_STR-BACTLHW sy-vline 
WA_REVALD_STR-BWPBWWR sy-vline 
WA_REVALD_STR-BWPBWHW sy-vline 
WA_REVALD_STR-BFWBWHW sy-vline 
WA_REVALD_STR-BKOBWWR sy-vline 
WA_REVALD_STR-BKOBWHW sy-vline 
WA_REVALD_STR-BKOFBHW sy-vline 
WA_REVALD_STR-BWPAEWR sy-vline 
WA_REVALD_STR-BWPAEHW sy-vline 
WA_REVALD_STR-BFWAEHW sy-vline 
WA_REVALD_STR-BAMT1WR sy-vline 
WA_REVALD_STR-BAMT1HW sy-vline 
WA_REVALD_STR-BAMT2WR sy-vline 
WA_REVALD_STR-BAMT2HW sy-vline 
WA_REVALD_STR-BAMT3WR sy-vline 
WA_REVALD_STR-BAMT3HW sy-vline 
WA_REVALD_STR-BAMT4WR sy-vline 
WA_REVALD_STR-BAMT4HW sy-vline 
WA_REVALD_STR-FW_TAGWERT sy-vline 
WA_REVALD_STR-HW_TAGWERT sy-vline 
WA_REVALD_STR-DEVAL sy-vline 
WA_REVALD_STR-SKURS_KZ sy-vline 
WA_REVALD_STR-SBWHR_KZ sy-vline 
WA_REVALD_STR-SHWHR_KZ sy-vline 
WA_REVALD_STR-PDURA_ANW sy-vline 
WA_REVALD_STR-PMDURA_ANW sy-vline 
WA_REVALD_STR-PDURA_BUW sy-vline 
WA_REVALD_STR-BBARWERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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