ABAP Select data from SAP table NJIT_S_CALL_COMPONENTS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP NJIT_S_CALL_COMPONENTS 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_S_CALL_COMPONENTS. 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_S_CALL_COMPONENTS 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_S_CALL_COMPONENTS TYPE STANDARD TABLE OF NJIT_S_CALL_COMPONENTS,
      WA_NJIT_S_CALL_COMPONENTS TYPE NJIT_S_CALL_COMPONENTS,
      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_S_CALL_COMPONENTS> TYPE NJIT_S_CALL_COMPONENTS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NJIT_S_CALL_COMPONENTS
*  INTO TABLE @DATA(IT_NJIT_S_CALL_COMPONENTS2).
*--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_S_CALL_COMPONENTS INDEX 1 INTO DATA(WA_NJIT_S_CALL_COMPONENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NJIT_S_CALL_COMPONENTS>-KEY = 1.
<NJIT_S_CALL_COMPONENTS>-INTERNALJITCALLNUMBER = 1.
<NJIT_S_CALL_COMPONENTS>-EXTERNALJITCALLNUMBER = 1.
<NJIT_S_CALL_COMPONENTS>-COMPGRPNUMBER = 1.
<NJIT_S_CALL_COMPONENTS>-JITCALLITEMNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NJIT_S_CALL_COMPONENTS-JITCALLITEMNUMBERFOREDIT, sy-vline,
  WA_NJIT_S_CALL_COMPONENTS-SHIPTOPARTY, sy-vline,
  WA_NJIT_S_CALL_COMPONENTS-MATERIAL, sy-vline,
  WA_NJIT_S_CALL_COMPONENTS-PRODUCTNAME, sy-vline,
  WA_NJIT_S_CALL_COMPONENTS-MATERIALBYCUSTOMER, sy-vline,
  WA_NJIT_S_CALL_COMPONENTS-EXTJITCALLITEMNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NJIT_S_CALL_COMPONENTS 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_S_CALL_COMPONENTS 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_S_CALL_COMPONENTS INTO WA_NJIT_S_CALL_COMPONENTS.


*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_S_CALL_COMPONENTS-INTERNALJITCALLNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S_CALL_COMPONENTS-INTERNALJITCALLNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field JITDELIVSQNCGRPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S_CALL_COMPONENTS-JITDELIVSQNCGRPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S_CALL_COMPONENTS-JITDELIVSQNCGRPID.
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_S_CALL_COMPONENTS_STR, 
KEY TYPE STRING,
INTERNALJITCALLNUMBER TYPE STRING,
EXTERNALJITCALLNUMBER TYPE STRING,
COMPGRPNUMBER TYPE STRING,
JITCALLITEMNUMBER TYPE STRING,
JITCALLITEMNUMBERFOREDIT TYPE STRING,
SHIPTOPARTY TYPE STRING,
MATERIAL TYPE STRING,
PRODUCTNAME TYPE STRING,
MATERIALBYCUSTOMER TYPE STRING,
EXTJITCALLITEMNUMBER TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
UNLOADINGPOINTNAME TYPE STRING,
SHIPPINGPOINT TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
CUSTSUPPLYAREA TYPE STRING,
CUSTASSEMBLYLOC TYPE STRING,
REQUIREMENTDATETIME TYPE STRING,
PLANNEDSHIPPINGDATETIME TYPE STRING,
DELIVERYCREATIONDATE TYPE STRING,
MATERIALAVAILABILITYDATE TYPE STRING,
MATERIALAVAILABILITYTIME TYPE STRING,
MATERIALAVAILABILITYDATETIME TYPE STRING,
CUSTCOMPGRPMATL TYPE STRING,
JITEXTSEQUENCENUMBER TYPE STRING,
COMPGRPMATL TYPE STRING,
REQUESTEDDELIVERYDATE TYPE STRING,
REQUESTEDDELIVERYTIME TYPE STRING,
EXTCOMPGRPNUMBER TYPE STRING,
JITFORMATTEDSEQUENCENUMBER TYPE STRING,
JITDELIVSQNCGRPID TYPE STRING,
JITDELIVSQNCGRPUUID TYPE STRING,
HU_STAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NJIT_S_CALL_COMPONENTS_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_S_CALL_COMPONENTS_STR-KEY sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-INTERNALJITCALLNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-EXTERNALJITCALLNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-COMPGRPNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITCALLITEMNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITCALLITEMNUMBERFOREDIT sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-SHIPTOPARTY sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-MATERIAL sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-PRODUCTNAME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-MATERIALBYCUSTOMER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-EXTJITCALLITEMNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-SALESORDER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-SALESORDERITEM sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-UNLOADINGPOINTNAME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-SHIPPINGPOINT sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-PLANT sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-STORAGELOCATION sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-CUSTSUPPLYAREA sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-CUSTASSEMBLYLOC sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-REQUIREMENTDATETIME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-PLANNEDSHIPPINGDATETIME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-DELIVERYCREATIONDATE sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-MATERIALAVAILABILITYDATE sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-MATERIALAVAILABILITYTIME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-MATERIALAVAILABILITYDATETIME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-CUSTCOMPGRPMATL sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITEXTSEQUENCENUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-COMPGRPMATL sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-REQUESTEDDELIVERYDATE sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-REQUESTEDDELIVERYTIME sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-EXTCOMPGRPNUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITFORMATTEDSEQUENCENUMBER sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITDELIVSQNCGRPID sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-JITDELIVSQNCGRPUUID sy-vline 
WA_NJIT_S_CALL_COMPONENTS_STR-HU_STAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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