ABAP Select data from SAP table RJKU001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJKU001 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 RJKU001. 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 RJKU001 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_RJKU001 TYPE STANDARD TABLE OF RJKU001,
      WA_RJKU001 TYPE RJKU001,
      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: <RJKU001> TYPE RJKU001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJKU001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJKU001
  INTO TABLE IT_RJKU001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKU001
*  INTO TABLE @DATA(IT_RJKU0012).
*--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_RJKU001 INDEX 1 INTO DATA(WA_RJKU0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJKU001 ASSIGNING <RJKU001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKU001>-VBELN = 1.
<RJKU001>-REFBELEG = 1.
<RJKU001>-FUNKTION = 1.
<RJKU001>-GPNR_AG = 1.
<RJKU001>-AUART = 1.

ENDLOOP.

LOOP AT IT_RJKU001 INTO WA_RJKU001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKU001-VKORG, sy-vline,
  WA_RJKU001-VTWEG, sy-vline,
  WA_RJKU001-SPART, sy-vline,
  WA_RJKU001-VKGRP, sy-vline,
  WA_RJKU001-VKBUR, sy-vline,
  WA_RJKU001-BSTNK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKU001 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_RJKU001 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_RJKU001 INTO WA_RJKU001.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPNR_AG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-GPNR_AG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-GPNR_AG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPNR_WE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-GPNR_WE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-GPNR_WE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRERZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-DRERZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-DRERZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-PVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-PVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPNR_RG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-GPNR_RG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-GPNR_RG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPNR_RE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKU001-GPNR_RE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKU001-GPNR_RE.
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_RJKU001_STR, 
VBELN TYPE STRING,
REFBELEG TYPE STRING,
FUNKTION TYPE STRING,
GPNR_AG TYPE STRING,
AUART TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKGRP TYPE STRING,
VKBUR TYPE STRING,
BSTNK TYPE STRING,
BSARK TYPE STRING,
BSTDK TYPE STRING,
BSTZD TYPE STRING,
IHREZ TYPE STRING,
BNAME TYPE STRING,
TELF1 TYPE STRING,
WAERK TYPE STRING,
KURST TYPE STRING,
FAKSP TYPE STRING,
XSEPFKKOPF TYPE STRING,
GPNR_WE TYPE STRING,
DRERZ TYPE STRING,
PVA TYPE STRING,
BEZUGSTYP TYPE STRING,
LIEFERART TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
BEZUGGRD TYPE STRING,
IVWKN TYPE STRING,
LIEFXUHR TYPE STRING,
SBFREI TYPE STRING,
KUENDGRD TYPE STRING,
XLOGO TYPE STRING,
KONDA TYPE STRING,
KDGRP TYPE STRING,
PLTYP TYPE STRING,
PERFK TYPE STRING,
PRBAS TYPE STRING,
PRBAS_VK TYPE STRING,
XSEPFKPOS TYPE STRING,
GPNR_RG TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BVTYP TYPE STRING,
XEZER TYPE STRING,
ZTERM TYPE STRING,
GPNR_RE TYPE STRING,
BEZPER TYPE STRING,
BZPERF TYPE STRING,
ETMENGE TYPE STRING,
PRSBINDDAT TYPE STRING,
FKDATVSYST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKU001_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_RJKU001_STR-VBELN sy-vline 
WA_RJKU001_STR-REFBELEG sy-vline 
WA_RJKU001_STR-FUNKTION sy-vline 
WA_RJKU001_STR-GPNR_AG sy-vline 
WA_RJKU001_STR-AUART sy-vline 
WA_RJKU001_STR-VKORG sy-vline 
WA_RJKU001_STR-VTWEG sy-vline 
WA_RJKU001_STR-SPART sy-vline 
WA_RJKU001_STR-VKGRP sy-vline 
WA_RJKU001_STR-VKBUR sy-vline 
WA_RJKU001_STR-BSTNK sy-vline 
WA_RJKU001_STR-BSARK sy-vline 
WA_RJKU001_STR-BSTDK sy-vline 
WA_RJKU001_STR-BSTZD sy-vline 
WA_RJKU001_STR-IHREZ sy-vline 
WA_RJKU001_STR-BNAME sy-vline 
WA_RJKU001_STR-TELF1 sy-vline 
WA_RJKU001_STR-WAERK sy-vline 
WA_RJKU001_STR-KURST sy-vline 
WA_RJKU001_STR-FAKSP sy-vline 
WA_RJKU001_STR-XSEPFKKOPF sy-vline 
WA_RJKU001_STR-GPNR_WE sy-vline 
WA_RJKU001_STR-DRERZ sy-vline 
WA_RJKU001_STR-PVA sy-vline 
WA_RJKU001_STR-BEZUGSTYP sy-vline 
WA_RJKU001_STR-LIEFERART sy-vline 
WA_RJKU001_STR-GUELTIGVON sy-vline 
WA_RJKU001_STR-GUELTIGBIS sy-vline 
WA_RJKU001_STR-BEZUGGRD sy-vline 
WA_RJKU001_STR-IVWKN sy-vline 
WA_RJKU001_STR-LIEFXUHR sy-vline 
WA_RJKU001_STR-SBFREI sy-vline 
WA_RJKU001_STR-KUENDGRD sy-vline 
WA_RJKU001_STR-XLOGO sy-vline 
WA_RJKU001_STR-KONDA sy-vline 
WA_RJKU001_STR-KDGRP sy-vline 
WA_RJKU001_STR-PLTYP sy-vline 
WA_RJKU001_STR-PERFK sy-vline 
WA_RJKU001_STR-PRBAS sy-vline 
WA_RJKU001_STR-PRBAS_VK sy-vline 
WA_RJKU001_STR-XSEPFKPOS sy-vline 
WA_RJKU001_STR-GPNR_RG sy-vline 
WA_RJKU001_STR-BANKS sy-vline 
WA_RJKU001_STR-BANKL sy-vline 
WA_RJKU001_STR-BANKN sy-vline 
WA_RJKU001_STR-BKONT sy-vline 
WA_RJKU001_STR-BVTYP sy-vline 
WA_RJKU001_STR-XEZER sy-vline 
WA_RJKU001_STR-ZTERM sy-vline 
WA_RJKU001_STR-GPNR_RE sy-vline 
WA_RJKU001_STR-BEZPER sy-vline 
WA_RJKU001_STR-BZPERF sy-vline 
WA_RJKU001_STR-ETMENGE sy-vline 
WA_RJKU001_STR-PRSBINDDAT sy-vline 
WA_RJKU001_STR-FKDATVSYST sy-vline      INTO ld_text SEPARATED BY SPACE.

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