ABAP Select data from SAP table NJIT_S_MIG_SC_HDR 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_MIG_SC_HDR 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_MIG_SC_HDR. 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_MIG_SC_HDR 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_MIG_SC_HDR TYPE STANDARD TABLE OF NJIT_S_MIG_SC_HDR,
      WA_NJIT_S_MIG_SC_HDR TYPE NJIT_S_MIG_SC_HDR,
      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_MIG_SC_HDR> TYPE NJIT_S_MIG_SC_HDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NJIT_S_MIG_SC_HDR
*  INTO TABLE @DATA(IT_NJIT_S_MIG_SC_HDR2).
*--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_MIG_SC_HDR INDEX 1 INTO DATA(WA_NJIT_S_MIG_SC_HDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NJIT_S_MIG_SC_HDR>-SENDER_TECHNICAL_ID = 1.
<NJIT_S_MIG_SC_HDR>-SUPPLYCONTROLID = 1.
<NJIT_S_MIG_SC_HDR>-SHIPTOPARTY = 1.
<NJIT_S_MIG_SC_HDR>-PLANT = 1.
<NJIT_S_MIG_SC_HDR>-CUSTSUPPLYAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NJIT_S_MIG_SC_HDR-MATERIAL, sy-vline,
  WA_NJIT_S_MIG_SC_HDR-JITACTIONCTRL, sy-vline,
  WA_NJIT_S_MIG_SC_HDR-JITCALLTYPE, sy-vline,
  WA_NJIT_S_MIG_SC_HDR-PARTIALDELIVERYISALLOWED, sy-vline,
  WA_NJIT_S_MIG_SC_HDR-JITUNDERDELIVERYTOLERANCEINPCT, sy-vline,
  WA_NJIT_S_MIG_SC_HDR-JITOVERDELIVERYTOLERANCEINPCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NJIT_S_MIG_SC_HDR 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_MIG_SC_HDR 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_MIG_SC_HDR INTO WA_NJIT_S_MIG_SC_HDR.


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

*Conversion exit ALPHA, internal->external for field SHIPTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S_MIG_SC_HDR-SHIPTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S_MIG_SC_HDR-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_MIG_SC_HDR-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S_MIG_SC_HDR-MATERIAL.
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_MIG_SC_HDR_STR, 
SENDER_TECHNICAL_ID TYPE STRING,
SUPPLYCONTROLID TYPE STRING,
SHIPTOPARTY TYPE STRING,
PLANT TYPE STRING,
CUSTSUPPLYAREA TYPE STRING,
MATERIAL TYPE STRING,
JITACTIONCTRL TYPE STRING,
JITCALLTYPE TYPE STRING,
PARTIALDELIVERYISALLOWED TYPE STRING,
JITUNDERDELIVERYTOLERANCEINPCT TYPE STRING,
JITOVERDELIVERYTOLERANCEINPCT TYPE STRING,
JITUNLIMITEDOVERDELIVISALLOWED TYPE STRING,
REPETITIVEMANUFACTURINGISALLWD TYPE STRING,
PRODUCTIONVERSION TYPE STRING,
JITEXTERNALPROCESSINGSTATUS TYPE STRING,
JITPRODNCONFIRMATIONCONTROL TYPE STRING,
JITDELIVCONFCONTROL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NJIT_S_MIG_SC_HDR_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_MIG_SC_HDR_STR-SENDER_TECHNICAL_ID sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-SUPPLYCONTROLID sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-SHIPTOPARTY sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-PLANT sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-CUSTSUPPLYAREA sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-MATERIAL sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITACTIONCTRL sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITCALLTYPE sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-PARTIALDELIVERYISALLOWED sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITUNDERDELIVERYTOLERANCEINPCT sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITOVERDELIVERYTOLERANCEINPCT sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITUNLIMITEDOVERDELIVISALLOWED sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-REPETITIVEMANUFACTURINGISALLWD sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-PRODUCTIONVERSION sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITEXTERNALPROCESSINGSTATUS sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITPRODNCONFIRMATIONCONTROL sy-vline 
WA_NJIT_S_MIG_SC_HDR_STR-JITDELIVCONFCONTROL sy-vline      INTO ld_text SEPARATED BY SPACE.

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