ABAP Select data from SAP table RMPKB into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMPKB 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 RMPKB. 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 RMPKB 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_RMPKB TYPE STANDARD TABLE OF RMPKB,
      WA_RMPKB TYPE RMPKB,
      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: <RMPKB> TYPE RMPKB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMPKB
*  INTO TABLE @DATA(IT_RMPKB2).
*--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_RMPKB INDEX 1 INTO DATA(WA_RMPKB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMPKB>-PKNUM = 1.
<RMPKB>-PKPOS = 1.
<RMPKB>-PKPS2 = 1.
<RMPKB>-PKBST = 1.
<RMPKB>-PKIMG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMPKB-RGVER, sy-vline,
  WA_RMPKB-PRVBE, sy-vline,
  WA_RMPKB-WERKS, sy-vline,
  WA_RMPKB-LGORT, sy-vline,
  WA_RMPKB-MATNR, sy-vline,
  WA_RMPKB-FANZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMPKB 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_RMPKB 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_RMPKB INTO WA_RMPKB.


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

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMPKB-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPKB-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_RMPKB_STR, 
PKNUM TYPE STRING,
PKPOS TYPE STRING,
PKPS2 TYPE STRING,
PKBST TYPE STRING,
PKIMG TYPE STRING,
RGVER TYPE STRING,
PRVBE TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
FANZG TYPE STRING,
FVOLL TYPE STRING,
FLEER TYPE STRING,
FWIBE TYPE STRING,
FEINL TYPE STRING,
FTRNS TYPE STRING,
FWART TYPE STRING,
FARBT TYPE STRING,
FIUSE TYPE STRING,
FSTFG TYPE STRING,
WBELM TYPE STRING,
WBPOS TYPE STRING,
WBENT TYPE STRING,
DELB0 TYPE STRING,
BARCO TYPE STRING,
BSTTX TYPE STRING,
PKRCK TYPE STRING,
PKKMP TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
SRT_M TYPE STRING,
SRT_P TYPE STRING,
SRTD1 TYPE STRING,
SRTD2 TYPE STRING,
TWART TYPE STRING,
TLEER TYPE STRING,
TARBT TYPE STRING,
TTRNS TYPE STRING,
TVOLL TYPE STRING,
TIUSE TYPE STRING,
BHSKT TYPE STRING,
BHSKTV TYPE STRING,
BHSKTN TYPE STRING,
PKAMG TYPE STRING,
PKUMW TYPE STRING,
LIFNR TYPE STRING,
PKKEY TYPE STRING,
PKBMG TYPE STRING,
PKNSE TYPE STRING,
SEPVB TYPE STRING,
SERGV TYPE STRING,
SEPKL TYPE STRING,
SEUMW TYPE STRING,
SELGO TYPE STRING,
SEKBA TYPE STRING,
SELGV TYPE STRING,
SERGQ TYPE STRING,
FINDM TYPE STRING,
FDMAT TYPE STRING,
FINDP TYPE STRING,
PKMWP TYPE STRING,
PKRKA TYPE STRING,
PKMAT TYPE STRING,
PKINR TYPE STRING,
PKBAR TYPE STRING,
FDPVB TYPE STRING,
WERKS_E TYPE STRING,
WERKS_U TYPE STRING,
PKTIM TYPE STRING,
PKLUZ TYPE STRING,
PKLDT TYPE STRING,
CHARG TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
KUNNR TYPE STRING,
KDMAT TYPE STRING,
KNREF TYPE STRING,
ABLAD TYPE STRING,
ABRVW TYPE STRING,
BSTNK TYPE STRING,
QUVER TYPE STRING,
INTPACKV TYPE STRING,
PACKV TYPE STRING,
PITXT TYPE STRING,
LOADCARR TYPE STRING,
ANZLT TYPE STRING,
PKAZLK TYPE STRING,
PKLEKBDT TYPE STRING,
PKLEKBUZ TYPE STRING,
PKLZKBDT TYPE STRING,
PKLZKBUZ TYPE STRING,
SYSMG TYPE STRING,
KORMG TYPE STRING,
PKZGDT TYPE STRING,
PKZGUZ TYPE STRING,
ORDID TYPE STRING,
MEINS TYPE STRING,
PK_QUAL TYPE STRING,
PKSASTOCK TYPE STRING,
PKEXPQNT TYPE STRING,
UMLGO TYPE STRING,
OLDVIEW TYPE STRING,
TABLEVIEW TYPE STRING,
AUSMG TYPE STRING,
GRUND TYPE STRING,
NLPLA TYPE STRING,
DUMMYS TYPE STRING,
PKOPJIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMPKB_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_RMPKB_STR-PKNUM sy-vline 
WA_RMPKB_STR-PKPOS sy-vline 
WA_RMPKB_STR-PKPS2 sy-vline 
WA_RMPKB_STR-PKBST sy-vline 
WA_RMPKB_STR-PKIMG sy-vline 
WA_RMPKB_STR-RGVER sy-vline 
WA_RMPKB_STR-PRVBE sy-vline 
WA_RMPKB_STR-WERKS sy-vline 
WA_RMPKB_STR-LGORT sy-vline 
WA_RMPKB_STR-MATNR sy-vline 
WA_RMPKB_STR-FANZG sy-vline 
WA_RMPKB_STR-FVOLL sy-vline 
WA_RMPKB_STR-FLEER sy-vline 
WA_RMPKB_STR-FWIBE sy-vline 
WA_RMPKB_STR-FEINL sy-vline 
WA_RMPKB_STR-FTRNS sy-vline 
WA_RMPKB_STR-FWART sy-vline 
WA_RMPKB_STR-FARBT sy-vline 
WA_RMPKB_STR-FIUSE sy-vline 
WA_RMPKB_STR-FSTFG sy-vline 
WA_RMPKB_STR-WBELM sy-vline 
WA_RMPKB_STR-WBPOS sy-vline 
WA_RMPKB_STR-WBENT sy-vline 
WA_RMPKB_STR-DELB0 sy-vline 
WA_RMPKB_STR-BARCO sy-vline 
WA_RMPKB_STR-BSTTX sy-vline 
WA_RMPKB_STR-PKRCK sy-vline 
WA_RMPKB_STR-PKKMP sy-vline 
WA_RMPKB_STR-BUDAT sy-vline 
WA_RMPKB_STR-BLDAT sy-vline 
WA_RMPKB_STR-SRT_M sy-vline 
WA_RMPKB_STR-SRT_P sy-vline 
WA_RMPKB_STR-SRTD1 sy-vline 
WA_RMPKB_STR-SRTD2 sy-vline 
WA_RMPKB_STR-TWART sy-vline 
WA_RMPKB_STR-TLEER sy-vline 
WA_RMPKB_STR-TARBT sy-vline 
WA_RMPKB_STR-TTRNS sy-vline 
WA_RMPKB_STR-TVOLL sy-vline 
WA_RMPKB_STR-TIUSE sy-vline 
WA_RMPKB_STR-BHSKT sy-vline 
WA_RMPKB_STR-BHSKTV sy-vline 
WA_RMPKB_STR-BHSKTN sy-vline 
WA_RMPKB_STR-PKAMG sy-vline 
WA_RMPKB_STR-PKUMW sy-vline 
WA_RMPKB_STR-LIFNR sy-vline 
WA_RMPKB_STR-PKKEY sy-vline 
WA_RMPKB_STR-PKBMG sy-vline 
WA_RMPKB_STR-PKNSE sy-vline 
WA_RMPKB_STR-SEPVB sy-vline 
WA_RMPKB_STR-SERGV sy-vline 
WA_RMPKB_STR-SEPKL sy-vline 
WA_RMPKB_STR-SEUMW sy-vline 
WA_RMPKB_STR-SELGO sy-vline 
WA_RMPKB_STR-SEKBA sy-vline 
WA_RMPKB_STR-SELGV sy-vline 
WA_RMPKB_STR-SERGQ sy-vline 
WA_RMPKB_STR-FINDM sy-vline 
WA_RMPKB_STR-FDMAT sy-vline 
WA_RMPKB_STR-FINDP sy-vline 
WA_RMPKB_STR-PKMWP sy-vline 
WA_RMPKB_STR-PKRKA sy-vline 
WA_RMPKB_STR-PKMAT sy-vline 
WA_RMPKB_STR-PKINR sy-vline 
WA_RMPKB_STR-PKBAR sy-vline 
WA_RMPKB_STR-FDPVB sy-vline 
WA_RMPKB_STR-WERKS_E sy-vline 
WA_RMPKB_STR-WERKS_U sy-vline 
WA_RMPKB_STR-PKTIM sy-vline 
WA_RMPKB_STR-PKLUZ sy-vline 
WA_RMPKB_STR-PKLDT sy-vline 
WA_RMPKB_STR-CHARG sy-vline 
WA_RMPKB_STR-VBELN sy-vline 
WA_RMPKB_STR-VBELP sy-vline 
WA_RMPKB_STR-KUNNR sy-vline 
WA_RMPKB_STR-KDMAT sy-vline 
WA_RMPKB_STR-KNREF sy-vline 
WA_RMPKB_STR-ABLAD sy-vline 
WA_RMPKB_STR-ABRVW sy-vline 
WA_RMPKB_STR-BSTNK sy-vline 
WA_RMPKB_STR-QUVER sy-vline 
WA_RMPKB_STR-INTPACKV sy-vline 
WA_RMPKB_STR-PACKV sy-vline 
WA_RMPKB_STR-PITXT sy-vline 
WA_RMPKB_STR-LOADCARR sy-vline 
WA_RMPKB_STR-ANZLT sy-vline 
WA_RMPKB_STR-PKAZLK sy-vline 
WA_RMPKB_STR-PKLEKBDT sy-vline 
WA_RMPKB_STR-PKLEKBUZ sy-vline 
WA_RMPKB_STR-PKLZKBDT sy-vline 
WA_RMPKB_STR-PKLZKBUZ sy-vline 
WA_RMPKB_STR-SYSMG sy-vline 
WA_RMPKB_STR-KORMG sy-vline 
WA_RMPKB_STR-PKZGDT sy-vline 
WA_RMPKB_STR-PKZGUZ sy-vline 
WA_RMPKB_STR-ORDID sy-vline 
WA_RMPKB_STR-MEINS sy-vline 
WA_RMPKB_STR-PK_QUAL sy-vline 
WA_RMPKB_STR-PKSASTOCK sy-vline 
WA_RMPKB_STR-PKEXPQNT sy-vline 
WA_RMPKB_STR-UMLGO sy-vline 
WA_RMPKB_STR-OLDVIEW sy-vline 
WA_RMPKB_STR-TABLEVIEW sy-vline 
WA_RMPKB_STR-AUSMG sy-vline 
WA_RMPKB_STR-GRUND sy-vline 
WA_RMPKB_STR-NLPLA sy-vline 
WA_RMPKB_STR-DUMMYS sy-vline 
WA_RMPKB_STR-PKOPJIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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