ABAP Select data from SAP table RN1ME_DYN_MDA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1ME_DYN_MDA 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 RN1ME_DYN_MDA. 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 RN1ME_DYN_MDA 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_RN1ME_DYN_MDA TYPE STANDARD TABLE OF RN1ME_DYN_MDA,
      WA_RN1ME_DYN_MDA TYPE RN1ME_DYN_MDA,
      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: <RN1ME_DYN_MDA> TYPE RN1ME_DYN_MDA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1ME_DYN_MDA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1ME_DYN_MDA
  INTO TABLE IT_RN1ME_DYN_MDA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1ME_DYN_MDA
*  INTO TABLE @DATA(IT_RN1ME_DYN_MDA2).
*--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_RN1ME_DYN_MDA INDEX 1 INTO DATA(WA_RN1ME_DYN_MDA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1ME_DYN_MDA ASSIGNING <RN1ME_DYN_MDA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1ME_DYN_MDA>-RBDAD = 1.
<RN1ME_DYN_MDA>-RBTAD = 1.
<RN1ME_DYN_MDA>-PBDAD = 1.
<RN1ME_DYN_MDA>-PBTAD = 1.
<RN1ME_DYN_MDA>-RTIMDIF = 1.

ENDLOOP.

LOOP AT IT_RN1ME_DYN_MDA INTO WA_RN1ME_DYN_MDA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1ME_DYN_MDA-RTDDESCR, sy-vline,
  WA_RN1ME_DYN_MDA-NOTGIVEN, sy-vline,
  WA_RN1ME_DYN_MDA-RDOSDIF, sy-vline,
  WA_RN1ME_DYN_MDA-RDDDESCR, sy-vline,
  WA_RN1ME_DYN_MDA-VFCOIND, sy-vline,
  WA_RN1ME_DYN_MDA-VFCOIND_ICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1ME_DYN_MDA 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_RN1ME_DYN_MDA 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_RN1ME_DYN_MDA INTO WA_RN1ME_DYN_MDA.


*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_RN1ME_DYN_MDA_STR, 
RBDAD TYPE STRING,
RBTAD TYPE STRING,
PBDAD TYPE STRING,
PBTAD TYPE STRING,
RTIMDIF TYPE STRING,
RTDDESCR TYPE STRING,
NOTGIVEN TYPE STRING,
RDOSDIF TYPE STRING,
RDDDESCR TYPE STRING,
VFCOIND TYPE STRING,
VFCOIND_ICON TYPE STRING,
PRNCSTX TYPE STRING,
PRNCLTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1ME_DYN_MDA_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_RN1ME_DYN_MDA_STR-RBDAD sy-vline 
WA_RN1ME_DYN_MDA_STR-RBTAD sy-vline 
WA_RN1ME_DYN_MDA_STR-PBDAD sy-vline 
WA_RN1ME_DYN_MDA_STR-PBTAD sy-vline 
WA_RN1ME_DYN_MDA_STR-RTIMDIF sy-vline 
WA_RN1ME_DYN_MDA_STR-RTDDESCR sy-vline 
WA_RN1ME_DYN_MDA_STR-NOTGIVEN sy-vline 
WA_RN1ME_DYN_MDA_STR-RDOSDIF sy-vline 
WA_RN1ME_DYN_MDA_STR-RDDDESCR sy-vline 
WA_RN1ME_DYN_MDA_STR-VFCOIND sy-vline 
WA_RN1ME_DYN_MDA_STR-VFCOIND_ICON sy-vline 
WA_RN1ME_DYN_MDA_STR-PRNCSTX sy-vline 
WA_RN1ME_DYN_MDA_STR-PRNCLTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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