ABAP Select data from SAP table RJMARCMAPPING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJMARCMAPPING
*  INTO TABLE @DATA(IT_RJMARCMAPPING2).
*--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_RJMARCMAPPING INDEX 1 INTO DATA(WA_RJMARCMAPPING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJMARCMAPPING>-FUNCTION = 1.
<RJMARCMAPPING>-MATNR = 1.
<RJMARCMAPPING>-WERKS = 1.
<RJMARCMAPPING>-ISMAVAILDATE = 1.
<RJMARCMAPPING>-ISMAVAILTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJMARCMAPPING-ISMARRIVALDATEPL, sy-vline,
  WA_RJMARCMAPPING-ISMARRIVALTIMEPL, sy-vline,
  WA_RJMARCMAPPING-ISMARRIVALDATEAC, sy-vline,
  WA_RJMARCMAPPING-ISMARRIVALTIMEAC, sy-vline,
  WA_RJMARCMAPPING-ISMSTORAGE, sy-vline,
  WA_RJMARCMAPPING-ISMXAVAILORDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJMARCMAPPING 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_RJMARCMAPPING 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_RJMARCMAPPING INTO WA_RJMARCMAPPING.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJMARCMAPPING-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMARCMAPPING-MATNR.
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_RJMARCMAPPING_STR, 
FUNCTION TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
ISMAVAILDATE TYPE STRING,
ISMAVAILTIME TYPE STRING,
ISMARRIVALDATEPL TYPE STRING,
ISMARRIVALTIMEPL TYPE STRING,
ISMARRIVALDATEAC TYPE STRING,
ISMARRIVALTIMEAC TYPE STRING,
ISMSTORAGE TYPE STRING,
ISMXAVAILORDER TYPE STRING,
ISMPURCHASEDATE TYPE STRING,
ISMRCPSTYE TYPE STRING,
ISMRETSORT TYPE STRING,
ISMRETLOG TYPE STRING,
ISMRETMOVE TYPE STRING,
ISMRETSTOCKIND TYPE STRING,
ISMRETSTORAGE TYPE STRING,
ISMLBBSA TYPE STRING,
ISMRETPHQUAN TYPE STRING,
ISMRETMOVE_ST TYPE STRING,
ISMRETSTOCKINDST TYPE STRING,
ISMRETSTORAGE_ST TYPE STRING,
ISMLBBSA_ST TYPE STRING,
ISMFIRSTRETEDI TYPE STRING,
ISMLATESTRETEDI TYPE STRING,
ISMFIRSTRET TYPE STRING,
ISMLATESTRET TYPE STRING,
ISMRETPROCEDURE TYPE STRING,
ISMPQPRELEVANT TYPE STRING,
ISMRETSCHEME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJMARCMAPPING_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_RJMARCMAPPING_STR-FUNCTION sy-vline 
WA_RJMARCMAPPING_STR-MATNR sy-vline 
WA_RJMARCMAPPING_STR-WERKS sy-vline 
WA_RJMARCMAPPING_STR-ISMAVAILDATE sy-vline 
WA_RJMARCMAPPING_STR-ISMAVAILTIME sy-vline 
WA_RJMARCMAPPING_STR-ISMARRIVALDATEPL sy-vline 
WA_RJMARCMAPPING_STR-ISMARRIVALTIMEPL sy-vline 
WA_RJMARCMAPPING_STR-ISMARRIVALDATEAC sy-vline 
WA_RJMARCMAPPING_STR-ISMARRIVALTIMEAC sy-vline 
WA_RJMARCMAPPING_STR-ISMSTORAGE sy-vline 
WA_RJMARCMAPPING_STR-ISMXAVAILORDER sy-vline 
WA_RJMARCMAPPING_STR-ISMPURCHASEDATE sy-vline 
WA_RJMARCMAPPING_STR-ISMRCPSTYE sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSORT sy-vline 
WA_RJMARCMAPPING_STR-ISMRETLOG sy-vline 
WA_RJMARCMAPPING_STR-ISMRETMOVE sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSTOCKIND sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSTORAGE sy-vline 
WA_RJMARCMAPPING_STR-ISMLBBSA sy-vline 
WA_RJMARCMAPPING_STR-ISMRETPHQUAN sy-vline 
WA_RJMARCMAPPING_STR-ISMRETMOVE_ST sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSTOCKINDST sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSTORAGE_ST sy-vline 
WA_RJMARCMAPPING_STR-ISMLBBSA_ST sy-vline 
WA_RJMARCMAPPING_STR-ISMFIRSTRETEDI sy-vline 
WA_RJMARCMAPPING_STR-ISMLATESTRETEDI sy-vline 
WA_RJMARCMAPPING_STR-ISMFIRSTRET sy-vline 
WA_RJMARCMAPPING_STR-ISMLATESTRET sy-vline 
WA_RJMARCMAPPING_STR-ISMRETPROCEDURE sy-vline 
WA_RJMARCMAPPING_STR-ISMPQPRELEVANT sy-vline 
WA_RJMARCMAPPING_STR-ISMRETSCHEME sy-vline      INTO ld_text SEPARATED BY SPACE.

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