ABAP Select data from SAP table RJD37 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJD37 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 RJD37. 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 RJD37 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_RJD37 TYPE STANDARD TABLE OF RJD37,
      WA_RJD37 TYPE RJD37,
      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: <RJD37> TYPE RJD37.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJD37.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJD37
  INTO TABLE IT_RJD37.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJD37
*  INTO TABLE @DATA(IT_RJD372).
*--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_RJD37 INDEX 1 INTO DATA(WA_RJD372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJD37 ASSIGNING <RJD37>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJD37>-TEXT001 = 1.
<RJD37>-TEXT002 = 1.
<RJD37>-TEXT003 = 1.
<RJD37>-TEXT004 = 1.
<RJD37>-TEXT005 = 1.

ENDLOOP.

LOOP AT IT_RJD37 INTO WA_RJD37.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJD37-TEXT006, sy-vline,
  WA_RJD37-TEXT007, sy-vline,
  WA_RJD37-TEXT008, sy-vline,
  WA_RJD37-TEXT009, sy-vline,
  WA_RJD37-TEXT010, sy-vline,
  WA_RJD37-TEXT011, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJD37 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_RJD37 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_RJD37 INTO WA_RJD37.


*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 DRERZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-DRERZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-DRERZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-PVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-PVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VAUSGB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-VAUSGB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-VAUSGB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VAUSGB_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-VAUSGB_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-VAUSGB_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRERZ_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-DRERZ_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-DRERZ_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVA_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37-PVA_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37-PVA_REF.
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_RJD37_STR, 
TEXT001 TYPE STRING,
TEXT002 TYPE STRING,
TEXT003 TYPE STRING,
TEXT004 TYPE STRING,
TEXT005 TYPE STRING,
TEXT006 TYPE STRING,
TEXT007 TYPE STRING,
TEXT008 TYPE STRING,
TEXT009 TYPE STRING,
TEXT010 TYPE STRING,
TEXT011 TYPE STRING,
TEXT013 TYPE STRING,
TEXT500 TYPE STRING,
TEXT700 TYPE STRING,
DRERZ TYPE STRING,
PVA TYPE STRING,
VAUSGB TYPE STRING,
VAUSGB_REF TYPE STRING,
DRERZ_REF TYPE STRING,
PVA_REF TYPE STRING,
ERSDAT_REF TYPE STRING,
EPRDAT_REF TYPE STRING,
BRTTXT TYPE STRING,
HOETXT TYPE STRING,
PGWTXT TYPE STRING,
PGMTXT TYPE STRING,
PSTTXT TYPE STRING,
GEWTXT TYPE STRING,
GEPTXT TYPE STRING,
GEITXT TYPE STRING,
LMNTXT TYPE STRING,
VA_VON TYPE STRING,
VA_BIS TYPE STRING,
VVTTA_TEXT TYPE STRING,
VVTST_TEXT TYPE STRING,
PAKGR_TEXT TYPE STRING,
SPAGR_TEXT TYPE STRING,
WERK_TEXT TYPE STRING,
PKTGR_TEXT TYPE STRING,
EINTRAG TYPE STRING,
EINTRAEGE TYPE STRING,
DOMTEXT_01 TYPE STRING,
DOMTEXT_02 TYPE STRING,
DOMTEXT_03 TYPE STRING,
DOMTEXT_04 TYPE STRING,
BGTXT TYPE STRING,
BGMTXT TYPE STRING,
TEXT_VA TYPE STRING,
TEXT_VBLG TYPE STRING,
TEXT_EINGR TYPE STRING,
NR_OF_ADVERTS TYPE STRING,
NR_OF_INSERTS TYPE STRING,
MARKFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJD37_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_RJD37_STR-TEXT001 sy-vline 
WA_RJD37_STR-TEXT002 sy-vline 
WA_RJD37_STR-TEXT003 sy-vline 
WA_RJD37_STR-TEXT004 sy-vline 
WA_RJD37_STR-TEXT005 sy-vline 
WA_RJD37_STR-TEXT006 sy-vline 
WA_RJD37_STR-TEXT007 sy-vline 
WA_RJD37_STR-TEXT008 sy-vline 
WA_RJD37_STR-TEXT009 sy-vline 
WA_RJD37_STR-TEXT010 sy-vline 
WA_RJD37_STR-TEXT011 sy-vline 
WA_RJD37_STR-TEXT013 sy-vline 
WA_RJD37_STR-TEXT500 sy-vline 
WA_RJD37_STR-TEXT700 sy-vline 
WA_RJD37_STR-DRERZ sy-vline 
WA_RJD37_STR-PVA sy-vline 
WA_RJD37_STR-VAUSGB sy-vline 
WA_RJD37_STR-VAUSGB_REF sy-vline 
WA_RJD37_STR-DRERZ_REF sy-vline 
WA_RJD37_STR-PVA_REF sy-vline 
WA_RJD37_STR-ERSDAT_REF sy-vline 
WA_RJD37_STR-EPRDAT_REF sy-vline 
WA_RJD37_STR-BRTTXT sy-vline 
WA_RJD37_STR-HOETXT sy-vline 
WA_RJD37_STR-PGWTXT sy-vline 
WA_RJD37_STR-PGMTXT sy-vline 
WA_RJD37_STR-PSTTXT sy-vline 
WA_RJD37_STR-GEWTXT sy-vline 
WA_RJD37_STR-GEPTXT sy-vline 
WA_RJD37_STR-GEITXT sy-vline 
WA_RJD37_STR-LMNTXT sy-vline 
WA_RJD37_STR-VA_VON sy-vline 
WA_RJD37_STR-VA_BIS sy-vline 
WA_RJD37_STR-VVTTA_TEXT sy-vline 
WA_RJD37_STR-VVTST_TEXT sy-vline 
WA_RJD37_STR-PAKGR_TEXT sy-vline 
WA_RJD37_STR-SPAGR_TEXT sy-vline 
WA_RJD37_STR-WERK_TEXT sy-vline 
WA_RJD37_STR-PKTGR_TEXT sy-vline 
WA_RJD37_STR-EINTRAG sy-vline 
WA_RJD37_STR-EINTRAEGE sy-vline 
WA_RJD37_STR-DOMTEXT_01 sy-vline 
WA_RJD37_STR-DOMTEXT_02 sy-vline 
WA_RJD37_STR-DOMTEXT_03 sy-vline 
WA_RJD37_STR-DOMTEXT_04 sy-vline 
WA_RJD37_STR-BGTXT sy-vline 
WA_RJD37_STR-BGMTXT sy-vline 
WA_RJD37_STR-TEXT_VA sy-vline 
WA_RJD37_STR-TEXT_VBLG sy-vline 
WA_RJD37_STR-TEXT_EINGR sy-vline 
WA_RJD37_STR-NR_OF_ADVERTS sy-vline 
WA_RJD37_STR-NR_OF_INSERTS sy-vline 
WA_RJD37_STR-MARKFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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