ABAP Select data from SAP table NJIT_S2P_S_JIT_DUE_POST_GW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP NJIT_S2P_S_JIT_DUE_POST_GW 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_S2P_S_JIT_DUE_POST_GW. 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_S2P_S_JIT_DUE_POST_GW 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_S2P_S_JIT_DUE_POST_GW TYPE STANDARD TABLE OF NJIT_S2P_S_JIT_DUE_POST_GW,
      WA_NJIT_S2P_S_JIT_DUE_POST_GW TYPE NJIT_S2P_S_JIT_DUE_POST_GW,
      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_S2P_S_JIT_DUE_POST_GW> TYPE NJIT_S2P_S_JIT_DUE_POST_GW.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_NJIT_S2P_S_JIT_DUE_POST_GW.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM NJIT_S2P_S_JIT_DUE_POST_GW
  INTO TABLE IT_NJIT_S2P_S_JIT_DUE_POST_GW.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NJIT_S2P_S_JIT_DUE_POST_GW
*  INTO TABLE @DATA(IT_NJIT_S2P_S_JIT_DUE_POST_GW2).
*--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_S2P_S_JIT_DUE_POST_GW INDEX 1 INTO DATA(WA_NJIT_S2P_S_JIT_DUE_POST_GW2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_NJIT_S2P_S_JIT_DUE_POST_GW ASSIGNING <NJIT_S2P_S_JIT_DUE_POST_GW>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NJIT_S2P_S_JIT_DUE_POST_GW>-INTERNALJITCALLNUMBER = 1.
<NJIT_S2P_S_JIT_DUE_POST_GW>-JITCALLITEMNUMBER = 1.
<NJIT_S2P_S_JIT_DUE_POST_GW>-REQUIREMENTDATETIME = 1.
<NJIT_S2P_S_JIT_DUE_POST_GW>-MATERIAL = 1.
<NJIT_S2P_S_JIT_DUE_POST_GW>-PRODUCTIONSUPPLYAREA = 1.

ENDLOOP.

LOOP AT IT_NJIT_S2P_S_JIT_DUE_POST_GW INTO WA_NJIT_S2P_S_JIT_DUE_POST_GW.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITOUTBSTOCKTRANSFERSTS, sy-vline,
  WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITSTOCKTRANSFERSTSTEXT, sy-vline,
  WA_NJIT_S2P_S_JIT_DUE_POST_GW-REQUESTEDQUANTITY, sy-vline,
  WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITOUTBSTOCKQUANTITY, sy-vline,
  WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITOUTBMINIMUMQUANTITY, sy-vline,
  WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITOUTBTRANSFERREDQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NJIT_S2P_S_JIT_DUE_POST_GW 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_S2P_S_JIT_DUE_POST_GW 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_S2P_S_JIT_DUE_POST_GW INTO WA_NJIT_S2P_S_JIT_DUE_POST_GW.


*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 INTERNALJITCALLNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S_JIT_DUE_POST_GW-INTERNALJITCALLNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S_JIT_DUE_POST_GW-INTERNALJITCALLNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S_JIT_DUE_POST_GW-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S_JIT_DUE_POST_GW-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S_JIT_DUE_POST_GW-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S_JIT_DUE_POST_GW-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field JITCONTAINER
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITCONTAINER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S_JIT_DUE_POST_GW-JITCONTAINER.
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_S2P_S_JIT_DUE_POST_GW_STR, 
INTERNALJITCALLNUMBER TYPE STRING,
JITCALLITEMNUMBER TYPE STRING,
REQUIREMENTDATETIME TYPE STRING,
MATERIAL TYPE STRING,
PRODUCTIONSUPPLYAREA TYPE STRING,
JITOUTBSTOCKTRANSFERSTS TYPE STRING,
JITSTOCKTRANSFERSTSTEXT TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
JITOUTBSTOCKQUANTITY TYPE STRING,
JITOUTBMINIMUMQUANTITY TYPE STRING,
JITOUTBTRANSFERREDQUANTITY TYPE STRING,
ACTUALDELIVEREDQUANTITY TYPE STRING,
JITOUTBAVAILABLESTOCKQUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
ISPARTIALLYDELIVERED TYPE STRING,
JITOUTBTRANSFERRINGQUANTITY TYPE STRING,
NUMBEROFLOADCARRIERS TYPE STRING,
PLANT TYPE STRING,
ISSUINGORRECEIVINGSTORAGELOC TYPE STRING,
JITCONTAINER TYPE STRING,
JITACTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NJIT_S2P_S_JIT_DUE_POST_GW_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_S2P_S_JIT_DUE_POST_GW_STR-INTERNALJITCALLNUMBER sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITCALLITEMNUMBER sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-REQUIREMENTDATETIME sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-MATERIAL sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-PRODUCTIONSUPPLYAREA sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBSTOCKTRANSFERSTS sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITSTOCKTRANSFERSTSTEXT sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-REQUESTEDQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBSTOCKQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBMINIMUMQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBTRANSFERREDQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-ACTUALDELIVEREDQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBAVAILABLESTOCKQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-QUANTITYUNIT sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-ISPARTIALLYDELIVERED sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITOUTBTRANSFERRINGQUANTITY sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-NUMBEROFLOADCARRIERS sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-PLANT sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-ISSUINGORRECEIVINGSTORAGELOC sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITCONTAINER sy-vline 
WA_NJIT_S2P_S_JIT_DUE_POST_GW_STR-JITACTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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