ABAP Select data from SAP table REXCAJFRW_L into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCAJFRW_L
*  INTO TABLE @DATA(IT_REXCAJFRW_L2).
*--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_REXCAJFRW_L INDEX 1 INTO DATA(WA_REXCAJFRW_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCAJFRW_L>-PROCESSEXTID = 1.
<REXCAJFRW_L>-ICONADJMPROCSTAT = 1.
<REXCAJFRW_L>-TEXTADJMPROCSTAT = 1.
<REXCAJFRW_L>-FLG_REVERSAL = 1.
<REXCAJFRW_L>-ICONPROTOCOL_A = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCAJFRW_L-ICONPROTOCOL_B, sy-vline,
  WA_REXCAJFRW_L-BUKRS, sy-vline,
  WA_REXCAJFRW_L-REPORTYEAR, sy-vline,
  WA_REXCAJFRW_L-MANDT, sy-vline,
  WA_REXCAJFRW_L-THREADGUID, sy-vline,
  WA_REXCAJFRW_L-PROCESSGUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCAJFRW_L 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_REXCAJFRW_L 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_REXCAJFRW_L INTO WA_REXCAJFRW_L.


*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 GJAHR, internal->external for field REPORTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REXCAJFRW_L-REPORTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCAJFRW_L-REPORTYEAR.
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_REXCAJFRW_L_STR, 
PROCESSEXTID TYPE STRING,
ICONADJMPROCSTAT TYPE STRING,
TEXTADJMPROCSTAT TYPE STRING,
FLG_REVERSAL TYPE STRING,
ICONPROTOCOL_A TYPE STRING,
ICONPROTOCOL_B TYPE STRING,
BUKRS TYPE STRING,
REPORTYEAR TYPE STRING,
MANDT TYPE STRING,
THREADGUID TYPE STRING,
PROCESSGUID TYPE STRING,
REAJPROCESSGUID TYPE STRING,
REPVARIANT TYPE STRING,
JOBNAME TYPE STRING,
JOBCOUNT TYPE STRING,
LOGHNDL_A TYPE STRING,
LOGHNDL_B TYPE STRING,
WP_PID TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
RERF TYPE STRING,
ARFCIPID TYPE STRING,
ARFCPID TYPE STRING,
ARFCTIME TYPE STRING,
ARFCTIDCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCAJFRW_L_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_REXCAJFRW_L_STR-PROCESSEXTID sy-vline 
WA_REXCAJFRW_L_STR-ICONADJMPROCSTAT sy-vline 
WA_REXCAJFRW_L_STR-TEXTADJMPROCSTAT sy-vline 
WA_REXCAJFRW_L_STR-FLG_REVERSAL sy-vline 
WA_REXCAJFRW_L_STR-ICONPROTOCOL_A sy-vline 
WA_REXCAJFRW_L_STR-ICONPROTOCOL_B sy-vline 
WA_REXCAJFRW_L_STR-BUKRS sy-vline 
WA_REXCAJFRW_L_STR-REPORTYEAR sy-vline 
WA_REXCAJFRW_L_STR-MANDT sy-vline 
WA_REXCAJFRW_L_STR-THREADGUID sy-vline 
WA_REXCAJFRW_L_STR-PROCESSGUID sy-vline 
WA_REXCAJFRW_L_STR-REAJPROCESSGUID sy-vline 
WA_REXCAJFRW_L_STR-REPVARIANT sy-vline 
WA_REXCAJFRW_L_STR-JOBNAME sy-vline 
WA_REXCAJFRW_L_STR-JOBCOUNT sy-vline 
WA_REXCAJFRW_L_STR-LOGHNDL_A sy-vline 
WA_REXCAJFRW_L_STR-LOGHNDL_B sy-vline 
WA_REXCAJFRW_L_STR-WP_PID sy-vline 
WA_REXCAJFRW_L_STR-DERF sy-vline 
WA_REXCAJFRW_L_STR-TERF sy-vline 
WA_REXCAJFRW_L_STR-RERF sy-vline 
WA_REXCAJFRW_L_STR-ARFCIPID sy-vline 
WA_REXCAJFRW_L_STR-ARFCPID sy-vline 
WA_REXCAJFRW_L_STR-ARFCTIME sy-vline 
WA_REXCAJFRW_L_STR-ARFCTIDCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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