ABAP Select data from SAP table PEG_REPLEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEG_REPLEN
*  INTO TABLE @DATA(IT_PEG_REPLEN2).
*--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_PEG_REPLEN INDEX 1 INTO DATA(WA_PEG_REPLEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEG_REPLEN>-WERKS = 1.
<PEG_REPLEN>-MATNR = 1.
<PEG_REPLEN>-GRPNR = 1.
<PEG_REPLEN>-REPOBJ = 1.
<PEG_REPLEN>-DELKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEG_REPLEN-PSPNR, sy-vline,
  WA_PEG_REPLEN-PLSCN, sy-vline,
  WA_PEG_REPLEN-PLANR, sy-vline,
  WA_PEG_REPLEN-GAMNG, sy-vline,
  WA_PEG_REPLEN-IASMG, sy-vline,
  WA_PEG_REPLEN-OPENQ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEG_REPLEN 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_PEG_REPLEN 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_PEG_REPLEN INTO WA_PEG_REPLEN.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PEG_REPLEN-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_REPLEN-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field GRPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PEG_REPLEN-GRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_REPLEN-GRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PEG_REPLEN-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_REPLEN-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit INSTK, internal->external for field INSTK
CALL FUNCTION 'CONVERSION_EXIT_INSTK_OUTPUT'
  EXPORTING
    input =                      WA_PEG_REPLEN-INSTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_REPLEN-INSTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEG_REPLEN-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_REPLEN-MEINS.
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_PEG_REPLEN_STR, 
WERKS TYPE STRING,
MATNR TYPE STRING,
GRPNR TYPE STRING,
REPOBJ TYPE STRING,
DELKZ TYPE STRING,
PSPNR TYPE STRING,
PLSCN TYPE STRING,
PLANR TYPE STRING,
GAMNG TYPE STRING,
IASMG TYPE STRING,
OPENQ TYPE STRING,
WEMNG TYPE STRING,
ELIKZ TYPE STRING,
SCPQTY TYPE STRING,
ASQTY TYPE STRING,
INSTK TYPE STRING,
MEINS TYPE STRING,
DAT00 TYPE STRING,
FIXRL TYPE STRING,
PRITY TYPE STRING,
DEL12 TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
XSSQTY TYPE STRING,
LQTY TYPE STRING,
TLLONR TYPE STRING,
WRK2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEG_REPLEN_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_PEG_REPLEN_STR-WERKS sy-vline 
WA_PEG_REPLEN_STR-MATNR sy-vline 
WA_PEG_REPLEN_STR-GRPNR sy-vline 
WA_PEG_REPLEN_STR-REPOBJ sy-vline 
WA_PEG_REPLEN_STR-DELKZ sy-vline 
WA_PEG_REPLEN_STR-PSPNR sy-vline 
WA_PEG_REPLEN_STR-PLSCN sy-vline 
WA_PEG_REPLEN_STR-PLANR sy-vline 
WA_PEG_REPLEN_STR-GAMNG sy-vline 
WA_PEG_REPLEN_STR-IASMG sy-vline 
WA_PEG_REPLEN_STR-OPENQ sy-vline 
WA_PEG_REPLEN_STR-WEMNG sy-vline 
WA_PEG_REPLEN_STR-ELIKZ sy-vline 
WA_PEG_REPLEN_STR-SCPQTY sy-vline 
WA_PEG_REPLEN_STR-ASQTY sy-vline 
WA_PEG_REPLEN_STR-INSTK sy-vline 
WA_PEG_REPLEN_STR-MEINS sy-vline 
WA_PEG_REPLEN_STR-DAT00 sy-vline 
WA_PEG_REPLEN_STR-FIXRL sy-vline 
WA_PEG_REPLEN_STR-PRITY sy-vline 
WA_PEG_REPLEN_STR-DEL12 sy-vline 
WA_PEG_REPLEN_STR-DELNR sy-vline 
WA_PEG_REPLEN_STR-DELPS sy-vline 
WA_PEG_REPLEN_STR-DELET sy-vline 
WA_PEG_REPLEN_STR-XSSQTY sy-vline 
WA_PEG_REPLEN_STR-LQTY sy-vline 
WA_PEG_REPLEN_STR-TLLONR sy-vline 
WA_PEG_REPLEN_STR-WRK2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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