ABAP Select data from SAP table RJPTMARAMAPPING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJPTMARAMAPPING
*  INTO TABLE @DATA(IT_RJPTMARAMAPPING2).
*--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_RJPTMARAMAPPING INDEX 1 INTO DATA(WA_RJPTMARAMAPPING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJPTMARAMAPPING>-FUNCTION = 1.
<RJPTMARAMAPPING>-MATNR = 1.
<RJPTMARAMAPPING>-ISMIPPRODUCT = 1.
<RJPTMARAMAPPING>-ISMTITLEMASTER = 1.
<RJPTMARAMAPPING>-ISMSSTRATNI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJPTMARAMAPPING-ISMSSTRATADDI, sy-vline,
  WA_RJPTMARAMAPPING-ISMSTRATPROCESS, sy-vline,
  WA_RJPTMARAMAPPING-ISMNIPTYPE, sy-vline,
  WA_RJPTMARAMAPPING-ISMMADEFORMARKET, sy-vline,
  WA_RJPTMARAMAPPING-ISMTMCPRODTYPE, sy-vline,
  WA_RJPTMARAMAPPING-ISMCOPYPRICE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJPTMARAMAPPING 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_RJPTMARAMAPPING 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_RJPTMARAMAPPING INTO WA_RJPTMARAMAPPING.


*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_RJPTMARAMAPPING-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPTMARAMAPPING-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ISMTITLEMASTER
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJPTMARAMAPPING-ISMTITLEMASTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJPTMARAMAPPING-ISMTITLEMASTER.
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_RJPTMARAMAPPING_STR, 
FUNCTION TYPE STRING,
MATNR TYPE STRING,
ISMIPPRODUCT TYPE STRING,
ISMTITLEMASTER TYPE STRING,
ISMSSTRATNI TYPE STRING,
ISMSSTRATADDI TYPE STRING,
ISMSTRATPROCESS TYPE STRING,
ISMNIPTYPE TYPE STRING,
ISMMADEFORMARKET TYPE STRING,
ISMTMCPRODTYPE TYPE STRING,
ISMCOPYPRICE TYPE STRING,
ISMWAERSCP TYPE STRING,
ISMCYCLEGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJPTMARAMAPPING_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_RJPTMARAMAPPING_STR-FUNCTION sy-vline 
WA_RJPTMARAMAPPING_STR-MATNR sy-vline 
WA_RJPTMARAMAPPING_STR-ISMIPPRODUCT sy-vline 
WA_RJPTMARAMAPPING_STR-ISMTITLEMASTER sy-vline 
WA_RJPTMARAMAPPING_STR-ISMSSTRATNI sy-vline 
WA_RJPTMARAMAPPING_STR-ISMSSTRATADDI sy-vline 
WA_RJPTMARAMAPPING_STR-ISMSTRATPROCESS sy-vline 
WA_RJPTMARAMAPPING_STR-ISMNIPTYPE sy-vline 
WA_RJPTMARAMAPPING_STR-ISMMADEFORMARKET sy-vline 
WA_RJPTMARAMAPPING_STR-ISMTMCPRODTYPE sy-vline 
WA_RJPTMARAMAPPING_STR-ISMCOPYPRICE sy-vline 
WA_RJPTMARAMAPPING_STR-ISMWAERSCP sy-vline 
WA_RJPTMARAMAPPING_STR-ISMCYCLEGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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