ABAP Select data from SAP table RJDMM_JDTDRER into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJDMM_JDTDRER
*  INTO TABLE @DATA(IT_RJDMM_JDTDRER2).
*--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_RJDMM_JDTDRER INDEX 1 INTO DATA(WA_RJDMM_JDTDRER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJDMM_JDTDRER>-MAKTX = 1.
<RJDMM_JDTDRER>-ISMTITLE = 1.
<RJDMM_JDTDRER>-ISMSUBTITLE1 = 1.
<RJDMM_JDTDRER>-ISMSUBTITLE2 = 1.
<RJDMM_JDTDRER>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJDMM_JDTDRER-MATKL, sy-vline,
  WA_RJDMM_JDTDRER-ISMPOSTALFORMAT, sy-vline,
  WA_RJDMM_JDTDRER-ISMDESCRMSD, sy-vline,
  WA_RJDMM_JDTDRER-ERNAM, sy-vline,
  WA_RJDMM_JDTDRER-ERSDA, sy-vline,
  WA_RJDMM_JDTDRER-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJDMM_JDTDRER 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_RJDMM_JDTDRER 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_RJDMM_JDTDRER INTO WA_RJDMM_JDTDRER.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RJDMM_JDTDRER_STR, 
MAKTX TYPE STRING,
ISMTITLE TYPE STRING,
ISMSUBTITLE1 TYPE STRING,
ISMSUBTITLE2 TYPE STRING,
SPART TYPE STRING,
MATKL TYPE STRING,
ISMPOSTALFORMAT TYPE STRING,
ISMDESCRMSD TYPE STRING,
ERNAM TYPE STRING,
ERSDA TYPE STRING,
AENAM TYPE STRING,
LAEDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJDMM_JDTDRER_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_RJDMM_JDTDRER_STR-MAKTX sy-vline 
WA_RJDMM_JDTDRER_STR-ISMTITLE sy-vline 
WA_RJDMM_JDTDRER_STR-ISMSUBTITLE1 sy-vline 
WA_RJDMM_JDTDRER_STR-ISMSUBTITLE2 sy-vline 
WA_RJDMM_JDTDRER_STR-SPART sy-vline 
WA_RJDMM_JDTDRER_STR-MATKL sy-vline 
WA_RJDMM_JDTDRER_STR-ISMPOSTALFORMAT sy-vline 
WA_RJDMM_JDTDRER_STR-ISMDESCRMSD sy-vline 
WA_RJDMM_JDTDRER_STR-ERNAM sy-vline 
WA_RJDMM_JDTDRER_STR-ERSDA sy-vline 
WA_RJDMM_JDTDRER_STR-AENAM sy-vline 
WA_RJDMM_JDTDRER_STR-LAEDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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