ABAP Select data from SAP table IFMRPWTREVBSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMRPWTREVBSEG
*  INTO TABLE @DATA(IT_IFMRPWTREVBSEG2).
*--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_IFMRPWTREVBSEG INDEX 1 INTO DATA(WA_IFMRPWTREVBSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMRPWTREVBSEG>-NEWBS = 1.
<IFMRPWTREVBSEG>-NEWUM = 1.
<IFMRPWTREVBSEG>-WRBTR = 1.
<IFMRPWTREVBSEG>-MWSKZ = 1.
<IFMRPWTREVBSEG>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMRPWTREVBSEG-KOSTL, sy-vline,
  WA_IFMRPWTREVBSEG-SGTXT, sy-vline,
  WA_IFMRPWTREVBSEG-ZLSPR, sy-vline,
  WA_IFMRPWTREVBSEG-MANSP, sy-vline,
  WA_IFMRPWTREVBSEG-NEWKO, sy-vline,
  WA_IFMRPWTREVBSEG-HKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMRPWTREVBSEG 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_IFMRPWTREVBSEG 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_IFMRPWTREVBSEG INTO WA_IFMRPWTREVBSEG.


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

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

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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_IFMRPWTREVBSEG-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRPWTREVBSEG-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_IFMRPWTREVBSEG-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRPWTREVBSEG-FIPEX.
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_IFMRPWTREVBSEG_STR, 
NEWBS TYPE STRING,
NEWUM TYPE STRING,
WRBTR TYPE STRING,
MWSKZ TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
SGTXT TYPE STRING,
ZLSPR TYPE STRING,
MANSP TYPE STRING,
NEWKO TYPE STRING,
HKONT TYPE STRING,
PRCTR TYPE STRING,
FIPOS TYPE STRING,
KSTRG TYPE STRING,
PROJK TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
FIPEX TYPE STRING,
FKBER_LONG TYPE STRING,
GEBER_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMRPWTREVBSEG_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_IFMRPWTREVBSEG_STR-NEWBS sy-vline 
WA_IFMRPWTREVBSEG_STR-NEWUM sy-vline 
WA_IFMRPWTREVBSEG_STR-WRBTR sy-vline 
WA_IFMRPWTREVBSEG_STR-MWSKZ sy-vline 
WA_IFMRPWTREVBSEG_STR-GSBER sy-vline 
WA_IFMRPWTREVBSEG_STR-KOSTL sy-vline 
WA_IFMRPWTREVBSEG_STR-SGTXT sy-vline 
WA_IFMRPWTREVBSEG_STR-ZLSPR sy-vline 
WA_IFMRPWTREVBSEG_STR-MANSP sy-vline 
WA_IFMRPWTREVBSEG_STR-NEWKO sy-vline 
WA_IFMRPWTREVBSEG_STR-HKONT sy-vline 
WA_IFMRPWTREVBSEG_STR-PRCTR sy-vline 
WA_IFMRPWTREVBSEG_STR-FIPOS sy-vline 
WA_IFMRPWTREVBSEG_STR-KSTRG sy-vline 
WA_IFMRPWTREVBSEG_STR-PROJK sy-vline 
WA_IFMRPWTREVBSEG_STR-FISTL sy-vline 
WA_IFMRPWTREVBSEG_STR-GEBER sy-vline 
WA_IFMRPWTREVBSEG_STR-FKBER sy-vline 
WA_IFMRPWTREVBSEG_STR-FIPEX sy-vline 
WA_IFMRPWTREVBSEG_STR-FKBER_LONG sy-vline 
WA_IFMRPWTREVBSEG_STR-GEBER_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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