ABAP Select data from SAP table RJLJBK1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJLJBK1 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 RJLJBK1. 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 RJLJBK1 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_RJLJBK1 TYPE STANDARD TABLE OF RJLJBK1,
      WA_RJLJBK1 TYPE RJLJBK1,
      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: <RJLJBK1> TYPE RJLJBK1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJLJBK1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJLJBK1
  INTO TABLE IT_RJLJBK1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJLJBK1
*  INTO TABLE @DATA(IT_RJLJBK12).
*--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_RJLJBK1 INDEX 1 INTO DATA(WA_RJLJBK12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJLJBK1 ASSIGNING <RJLJBK1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJLJBK1>-MANDT = 1.
<RJLJBK1>-BEZ_TYP = 1.
<RJLJBK1>-KAPPL = 1.
<RJLJBK1>-KALSM = 1.
<RJLJBK1>-BEZKOND = 1.

ENDLOOP.

LOOP AT IT_RJLJBK1 INTO WA_RJLJBK1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJLJBK1-KNUMV, sy-vline,
  WA_RJLJBK1-KPOSN, sy-vline,
  WA_RJLJBK1-KSCHL, sy-vline,
  WA_RJLJBK1-KRECH, sy-vline,
  WA_RJLJBK1-KBETR, sy-vline,
  WA_RJLJBK1-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJLJBK1 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_RJLJBK1 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_RJLJBK1 INTO WA_RJLJBK1.


*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 BEZKOND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJLJBK1-BEZKOND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJLJBK1-BEZKOND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJLJBK1-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJLJBK1-KMEIN.
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_RJLJBK1_STR, 
MANDT TYPE STRING,
BEZ_TYP TYPE STRING,
KAPPL TYPE STRING,
KALSM TYPE STRING,
BEZKOND TYPE STRING,
KNUMV TYPE STRING,
KPOSN TYPE STRING,
KSCHL TYPE STRING,
KRECH TYPE STRING,
KBETR TYPE STRING,
WAERS TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
ERRKZ TYPE STRING,
KMANU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJLJBK1_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_RJLJBK1_STR-MANDT sy-vline 
WA_RJLJBK1_STR-BEZ_TYP sy-vline 
WA_RJLJBK1_STR-KAPPL sy-vline 
WA_RJLJBK1_STR-KALSM sy-vline 
WA_RJLJBK1_STR-BEZKOND sy-vline 
WA_RJLJBK1_STR-KNUMV sy-vline 
WA_RJLJBK1_STR-KPOSN sy-vline 
WA_RJLJBK1_STR-KSCHL sy-vline 
WA_RJLJBK1_STR-KRECH sy-vline 
WA_RJLJBK1_STR-KBETR sy-vline 
WA_RJLJBK1_STR-WAERS sy-vline 
WA_RJLJBK1_STR-KPEIN sy-vline 
WA_RJLJBK1_STR-KMEIN sy-vline 
WA_RJLJBK1_STR-KUMZA sy-vline 
WA_RJLJBK1_STR-KUMNE sy-vline 
WA_RJLJBK1_STR-ERRKZ sy-vline 
WA_RJLJBK1_STR-KMANU sy-vline      INTO ld_text SEPARATED BY SPACE.

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