ABAP Select data from SAP table RJD37BZ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJD37BZ 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 RJD37BZ. 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 RJD37BZ 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_RJD37BZ TYPE STANDARD TABLE OF RJD37BZ,
      WA_RJD37BZ TYPE RJD37BZ,
      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: <RJD37BZ> TYPE RJD37BZ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJD37BZ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJD37BZ
  INTO TABLE IT_RJD37BZ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJD37BZ
*  INTO TABLE @DATA(IT_RJD37BZ2).
*--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_RJD37BZ INDEX 1 INTO DATA(WA_RJD37BZ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJD37BZ ASSIGNING <RJD37BZ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJD37BZ>-BZTYP = 1.
<RJD37BZ>-VABEI = 1.
<RJD37BZ>-DREBEI = 1.
<RJD37BZ>-PVABEI = 1.
<RJD37BZ>-ERSDAT = 1.

ENDLOOP.

LOOP AT IT_RJD37BZ INTO WA_RJD37BZ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJD37BZ-EPERDATUM, sy-vline,
  WA_RJD37BZ-BEZEI10, sy-vline,
  WA_RJD37BZ-AUSNKZ, sy-vline,
  WA_RJD37BZ-XFRBPO, sy-vline,
  WA_RJD37BZ-ERFUSER, sy-vline,
  WA_RJD37BZ-ERFDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJD37BZ 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_RJD37BZ 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_RJD37BZ INTO WA_RJD37BZ.


*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 VABEI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37BZ-VABEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37BZ-VABEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DREBEI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37BZ-DREBEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37BZ-DREBEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVABEI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJD37BZ-PVABEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJD37BZ-PVABEI.
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_RJD37BZ_STR, 
BZTYP TYPE STRING,
VABEI TYPE STRING,
DREBEI TYPE STRING,
PVABEI TYPE STRING,
ERSDAT TYPE STRING,
EPERDATUM TYPE STRING,
BEZEI10 TYPE STRING,
AUSNKZ TYPE STRING,
XFRBPO TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJD37BZ_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_RJD37BZ_STR-BZTYP sy-vline 
WA_RJD37BZ_STR-VABEI sy-vline 
WA_RJD37BZ_STR-DREBEI sy-vline 
WA_RJD37BZ_STR-PVABEI sy-vline 
WA_RJD37BZ_STR-ERSDAT sy-vline 
WA_RJD37BZ_STR-EPERDATUM sy-vline 
WA_RJD37BZ_STR-BEZEI10 sy-vline 
WA_RJD37BZ_STR-AUSNKZ sy-vline 
WA_RJD37BZ_STR-XFRBPO sy-vline 
WA_RJD37BZ_STR-ERFUSER sy-vline 
WA_RJD37BZ_STR-ERFDATE sy-vline 
WA_RJD37BZ_STR-ERFTIME sy-vline 
WA_RJD37BZ_STR-AENUSER sy-vline 
WA_RJD37BZ_STR-AENDATE sy-vline 
WA_RJD37BZ_STR-AENTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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