ABAP Select data from SAP table NJIT_PRODN_CONF_BCKFL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NJIT_PRODN_CONF_BCKFL
*  INTO TABLE @DATA(IT_NJIT_PRODN_CONF_BCKFL2).
*--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_NJIT_PRODN_CONF_BCKFL INDEX 1 INTO DATA(WA_NJIT_PRODN_CONF_BCKFL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NJIT_PRODN_CONF_BCKFL>-JITCALLCOMPGRPUUID = 1.
<NJIT_PRODN_CONF_BCKFL>-PDC_NUMBER = 1.
<NJIT_PRODN_CONF_BCKFL>-MATERIALNR = 1.
<NJIT_PRODN_CONF_BCKFL>-PRODPLANT = 1.
<NJIT_PRODN_CONF_BCKFL>-PLANPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NJIT_PRODN_CONF_BCKFL-STORAGELOC, sy-vline,
  WA_NJIT_PRODN_CONF_BCKFL-PRODVERSION, sy-vline,
  WA_NJIT_PRODN_CONF_BCKFL-PRODLINE, sy-vline,
  WA_NJIT_PRODN_CONF_BCKFL-PLANNINGID, sy-vline,
  WA_NJIT_PRODN_CONF_BCKFL-BATCH, sy-vline,
  WA_NJIT_PRODN_CONF_BCKFL-POSTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NJIT_PRODN_CONF_BCKFL 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_NJIT_PRODN_CONF_BCKFL 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_NJIT_PRODN_CONF_BCKFL INTO WA_NJIT_PRODN_CONF_BCKFL.


*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 MATN5, internal->external for field MATERIALNR
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field REVLEVEL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_PRODN_CONF_BCKFL-REVLEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_PRODN_CONF_BCKFL-REVLEVEL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATNL, internal->external for field MATERIALNR_EXTERNAL
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_EXTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_EXTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATERIALNR_VERSION
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIALNR_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_PRODN_CONF_BCKFL-MATERIALNR_LONG.
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_NJIT_PRODN_CONF_BCKFL_STR, 
JITCALLCOMPGRPUUID TYPE STRING,
PDC_NUMBER TYPE STRING,
MATERIALNR TYPE STRING,
PRODPLANT TYPE STRING,
PLANPLANT TYPE STRING,
STORAGELOC TYPE STRING,
PRODVERSION TYPE STRING,
PRODLINE TYPE STRING,
PLANNINGID TYPE STRING,
BATCH TYPE STRING,
POSTDATE TYPE STRING,
DOCDATE TYPE STRING,
DOCHEADERTXT TYPE STRING,
BACKFLQUANT TYPE STRING,
SCRAPQUANT TYPE STRING,
UNITOFMEASURE TYPE STRING,
UNITOFMEASURE_ISO TYPE STRING,
SCRAPREASON TYPE STRING,
REVLEVEL TYPE STRING,
PLANORDER TYPE STRING,
ORDERCOSTS TYPE STRING,
INCLCOMPSCRAP TYPE STRING,
MATERIALNR_EXTERNAL TYPE STRING,
MATERIALNR_GUID TYPE STRING,
MATERIALNR_VERSION TYPE STRING,
PERNR TYPE STRING,
GRUNR TYPE STRING,
LOART TYPE STRING,
LOGRP TYPE STRING,
LSTYP TYPE STRING,
USER1 TYPE STRING,
USER2 TYPE STRING,
MATERIALNR_LONG TYPE STRING,
WAREHOUSE_EWM TYPE STRING,
DESTINATION_STORAGE_BIN_EWM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NJIT_PRODN_CONF_BCKFL_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_NJIT_PRODN_CONF_BCKFL_STR-JITCALLCOMPGRPUUID sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PDC_NUMBER sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-MATERIALNR sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PRODPLANT sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PLANPLANT sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-STORAGELOC sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PRODVERSION sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PRODLINE sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PLANNINGID sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-BATCH sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-POSTDATE sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-DOCDATE sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-DOCHEADERTXT sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-BACKFLQUANT sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-SCRAPQUANT sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-UNITOFMEASURE sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-UNITOFMEASURE_ISO sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-SCRAPREASON sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-REVLEVEL sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PLANORDER sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-ORDERCOSTS sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-INCLCOMPSCRAP sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-MATERIALNR_EXTERNAL sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-MATERIALNR_GUID sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-MATERIALNR_VERSION sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-PERNR sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-GRUNR sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-LOART sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-LOGRP sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-LSTYP sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-USER1 sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-USER2 sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-MATERIALNR_LONG sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-WAREHOUSE_EWM sy-vline 
WA_NJIT_PRODN_CONF_BCKFL_STR-DESTINATION_STORAGE_BIN_EWM sy-vline      INTO ld_text SEPARATED BY SPACE.

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