ABAP Select data from SAP table APIJITHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APIJITHDR
*  INTO TABLE @DATA(IT_APIJITHDR2).
*--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_APIJITHDR INDEX 1 INTO DATA(WA_APIJITHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APIJITHDR>-MANDT = 1.
<APIJITHDR>-JITCALLNUMBER = 1.
<APIJITHDR>-JITCALLTYPE = 1.
<APIJITHDR>-JITCALLTYPETEXT = 1.
<APIJITHDR>-JITLIFECYCLESTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APIJITHDR-JITLIFECYCLESTATUSTEXT, sy-vline,
  WA_APIJITHDR-JITMISSINGPARTFLAG, sy-vline,
  WA_APIJITHDR-JITCALLPRIORITYTYPE, sy-vline,
  WA_APIJITHDR-JITCALLCREATIONMODETEXT, sy-vline,
  WA_APIJITHDR-CREATEDBYUSER, sy-vline,
  WA_APIJITHDR-CREATIONDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APIJITHDR 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_APIJITHDR 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_APIJITHDR INTO WA_APIJITHDR.


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

*Conversion exit MATN1, internal->external for field VEHICLEMODEL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_APIJITHDR-VEHICLEMODEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APIJITHDR-VEHICLEMODEL.
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_APIJITHDR_STR, 
MANDT TYPE STRING,
JITCALLNUMBER TYPE STRING,
JITCALLTYPE TYPE STRING,
JITCALLTYPETEXT TYPE STRING,
JITLIFECYCLESTATUS TYPE STRING,
JITLIFECYCLESTATUSTEXT TYPE STRING,
JITMISSINGPARTFLAG TYPE STRING,
JITCALLPRIORITYTYPE TYPE STRING,
JITCALLCREATIONMODETEXT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDBYUSERDESCRIPTION TYPE STRING,
CREATEDBYUSERDESCRIPTION TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
VEHICLEIDENTIFICATIONNUMBER TYPE STRING,
VEHICLEMODEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APIJITHDR_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_APIJITHDR_STR-MANDT sy-vline 
WA_APIJITHDR_STR-JITCALLNUMBER sy-vline 
WA_APIJITHDR_STR-JITCALLTYPE sy-vline 
WA_APIJITHDR_STR-JITCALLTYPETEXT sy-vline 
WA_APIJITHDR_STR-JITLIFECYCLESTATUS sy-vline 
WA_APIJITHDR_STR-JITLIFECYCLESTATUSTEXT sy-vline 
WA_APIJITHDR_STR-JITMISSINGPARTFLAG sy-vline 
WA_APIJITHDR_STR-JITCALLPRIORITYTYPE sy-vline 
WA_APIJITHDR_STR-JITCALLCREATIONMODETEXT sy-vline 
WA_APIJITHDR_STR-CREATEDBYUSER sy-vline 
WA_APIJITHDR_STR-CREATIONDATETIME sy-vline 
WA_APIJITHDR_STR-LASTCHANGEDBYUSER sy-vline 
WA_APIJITHDR_STR-LASTCHANGEDBYUSERDESCRIPTION sy-vline 
WA_APIJITHDR_STR-CREATEDBYUSERDESCRIPTION sy-vline 
WA_APIJITHDR_STR-LASTCHANGEDATETIME sy-vline 
WA_APIJITHDR_STR-VEHICLEIDENTIFICATIONNUMBER sy-vline 
WA_APIJITHDR_STR-VEHICLEMODEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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