ABAP Select data from SAP table EPREI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EPREI
*  INTO TABLE @DATA(IT_EPREI2).
*--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_EPREI INDEX 1 INTO DATA(WA_EPREI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EPREI>-MANDT = 1.
<EPREI>-PREIS = 1.
<EPREI>-PREISTYP = 1.
<EPREI>-PREISTUF = 1.
<EPREI>-SPARTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EPREI-MASS, sy-vline,
  WA_EPREI-AKLASSE, sy-vline,
  WA_EPREI-TIMBASIS, sy-vline,
  WA_EPREI-TIMTYP, sy-vline,
  WA_EPREI-PREIGKL, sy-vline,
  WA_EPREI-MITTELPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EPREI 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_EPREI 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_EPREI INTO WA_EPREI.


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

*Conversion exit CUNIT, internal->external for field MASS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EPREI-MASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPREI-MASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EPREI-ANLAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPREI-ANLAGE.
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_EPREI_STR, 
MANDT TYPE STRING,
PREIS TYPE STRING,
PREISTYP TYPE STRING,
PREISTUF TYPE STRING,
SPARTE TYPE STRING,
MASS TYPE STRING,
AKLASSE TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
PREIGKL TYPE STRING,
MITTELPR TYPE STRING,
DPREIKZ TYPE STRING,
RUNDART TYPE STRING,
RUNDUNG TYPE STRING,
PREISART TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
INDEXP TYPE STRING,
NEXTINT TYPE STRING,
FRAN_TYPE TYPE STRING,
EXTPRICE TYPE STRING,
PRCZONAJ TYPE STRING,
PRCZOMIN TYPE STRING,
PRCZOMAX TYPE STRING,
KA_GRENZPREIS TYPE STRING,
GROSSPRICE TYPE STRING,
PRICEORIGIN TYPE STRING,
ANLAGE TYPE STRING,
RABART TYPE STRING,
RABTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EPREI_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_EPREI_STR-MANDT sy-vline 
WA_EPREI_STR-PREIS sy-vline 
WA_EPREI_STR-PREISTYP sy-vline 
WA_EPREI_STR-PREISTUF sy-vline 
WA_EPREI_STR-SPARTE sy-vline 
WA_EPREI_STR-MASS sy-vline 
WA_EPREI_STR-AKLASSE sy-vline 
WA_EPREI_STR-TIMBASIS sy-vline 
WA_EPREI_STR-TIMTYP sy-vline 
WA_EPREI_STR-PREIGKL sy-vline 
WA_EPREI_STR-MITTELPR sy-vline 
WA_EPREI_STR-DPREIKZ sy-vline 
WA_EPREI_STR-RUNDART sy-vline 
WA_EPREI_STR-RUNDUNG sy-vline 
WA_EPREI_STR-PREISART sy-vline 
WA_EPREI_STR-ERDAT sy-vline 
WA_EPREI_STR-ERNAM sy-vline 
WA_EPREI_STR-AEDAT sy-vline 
WA_EPREI_STR-AENAM sy-vline 
WA_EPREI_STR-BEGRU sy-vline 
WA_EPREI_STR-LOEVM sy-vline 
WA_EPREI_STR-INDEXP sy-vline 
WA_EPREI_STR-NEXTINT sy-vline 
WA_EPREI_STR-FRAN_TYPE sy-vline 
WA_EPREI_STR-EXTPRICE sy-vline 
WA_EPREI_STR-PRCZONAJ sy-vline 
WA_EPREI_STR-PRCZOMIN sy-vline 
WA_EPREI_STR-PRCZOMAX sy-vline 
WA_EPREI_STR-KA_GRENZPREIS sy-vline 
WA_EPREI_STR-GROSSPRICE sy-vline 
WA_EPREI_STR-PRICEORIGIN sy-vline 
WA_EPREI_STR-ANLAGE sy-vline 
WA_EPREI_STR-RABART sy-vline 
WA_EPREI_STR-RABTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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