ABAP Select data from SAP table EPRWA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EPRWA
*  INTO TABLE @DATA(IT_EPRWA2).
*--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_EPRWA INDEX 1 INTO DATA(WA_EPRWA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EPRWA>-FCODE = 1.
<EPRWA>-PRMOD = 1.
<EPRWA>-SIGGR = 1.
<EPRWA>-PERAN = 1.
<EPRWA>-PERIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EPRWA-ANZPR, sy-vline,
  WA_EPRWA-GWERT, sy-vline,
  WA_EPRWA-TWERT, sy-vline,
  WA_EPRWA-PRMAD, sy-vline,
  WA_EPRWA-FSUMM, sy-vline,
  WA_EPRWA-THKOF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EPRWA 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_EPRWA 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_EPRWA INTO WA_EPRWA.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EPRWA_STR, 
FCODE TYPE STRING,
PRMOD TYPE STRING,
SIGGR TYPE STRING,
PERAN TYPE STRING,
PERIN TYPE STRING,
ANZPR TYPE STRING,
GWERT TYPE STRING,
TWERT TYPE STRING,
PRMAD TYPE STRING,
FSUMM TYPE STRING,
THKOF TYPE STRING,
MODAW TYPE STRING,
MODAV TYPE STRING,
KZPAR TYPE STRING,
OPGRA TYPE STRING,
KZINI TYPE STRING,
ALPHA TYPE STRING,
BETA1 TYPE STRING,
GAMMA TYPE STRING,
DELTA TYPE STRING,
EPSIL TYPE STRING,
PERIO TYPE STRING,
PEREX TYPE STRING,
FIMON TYPE STRING,
GEWGR TYPE STRING,
PROAB TYPE STRING,
AUSNA TYPE STRING,
PRPFL TYPE STRING,
PRWUG TYPE STRING,
PRWOG TYPE STRING,
PRROS TYPE STRING,
PRKUM TYPE STRING,
PRZGF TYPE STRING,
AKTPE TYPE STRING,
AVGPER TYPE STRING,
FLGEXC TYPE STRING,
FLGCOR TYPE STRING,
SIGMA TYPE STRING,
VBKEZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EPRWA_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_EPRWA_STR-FCODE sy-vline 
WA_EPRWA_STR-PRMOD sy-vline 
WA_EPRWA_STR-SIGGR sy-vline 
WA_EPRWA_STR-PERAN sy-vline 
WA_EPRWA_STR-PERIN sy-vline 
WA_EPRWA_STR-ANZPR sy-vline 
WA_EPRWA_STR-GWERT sy-vline 
WA_EPRWA_STR-TWERT sy-vline 
WA_EPRWA_STR-PRMAD sy-vline 
WA_EPRWA_STR-FSUMM sy-vline 
WA_EPRWA_STR-THKOF sy-vline 
WA_EPRWA_STR-MODAW sy-vline 
WA_EPRWA_STR-MODAV sy-vline 
WA_EPRWA_STR-KZPAR sy-vline 
WA_EPRWA_STR-OPGRA sy-vline 
WA_EPRWA_STR-KZINI sy-vline 
WA_EPRWA_STR-ALPHA sy-vline 
WA_EPRWA_STR-BETA1 sy-vline 
WA_EPRWA_STR-GAMMA sy-vline 
WA_EPRWA_STR-DELTA sy-vline 
WA_EPRWA_STR-EPSIL sy-vline 
WA_EPRWA_STR-PERIO sy-vline 
WA_EPRWA_STR-PEREX sy-vline 
WA_EPRWA_STR-FIMON sy-vline 
WA_EPRWA_STR-GEWGR sy-vline 
WA_EPRWA_STR-PROAB sy-vline 
WA_EPRWA_STR-AUSNA sy-vline 
WA_EPRWA_STR-PRPFL sy-vline 
WA_EPRWA_STR-PRWUG sy-vline 
WA_EPRWA_STR-PRWOG sy-vline 
WA_EPRWA_STR-PRROS sy-vline 
WA_EPRWA_STR-PRKUM sy-vline 
WA_EPRWA_STR-PRZGF sy-vline 
WA_EPRWA_STR-AKTPE sy-vline 
WA_EPRWA_STR-AVGPER sy-vline 
WA_EPRWA_STR-FLGEXC sy-vline 
WA_EPRWA_STR-FLGCOR sy-vline 
WA_EPRWA_STR-SIGMA sy-vline 
WA_EPRWA_STR-VBKEZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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