ABAP Select data from SAP table RN1_DYNP_RECON_MPPS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1_DYNP_RECON_MPPS 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 RN1_DYNP_RECON_MPPS. 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 RN1_DYNP_RECON_MPPS 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_RN1_DYNP_RECON_MPPS TYPE STANDARD TABLE OF RN1_DYNP_RECON_MPPS,
      WA_RN1_DYNP_RECON_MPPS TYPE RN1_DYNP_RECON_MPPS,
      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: <RN1_DYNP_RECON_MPPS> TYPE RN1_DYNP_RECON_MPPS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_DYNP_RECON_MPPS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_DYNP_RECON_MPPS
  INTO TABLE IT_RN1_DYNP_RECON_MPPS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_DYNP_RECON_MPPS
*  INTO TABLE @DATA(IT_RN1_DYNP_RECON_MPPS2).
*--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_RN1_DYNP_RECON_MPPS INDEX 1 INTO DATA(WA_RN1_DYNP_RECON_MPPS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_DYNP_RECON_MPPS ASSIGNING <RN1_DYNP_RECON_MPPS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_DYNP_RECON_MPPS>-NODE_KEY = 1.
<RN1_DYNP_RECON_MPPS>-MANDT = 1.
<RN1_DYNP_RECON_MPPS>-MPPSID = 1.
<RN1_DYNP_RECON_MPPS>-RECNO = 1.
<RN1_DYNP_RECON_MPPS>-ACCNO = 1.

ENDLOOP.

LOOP AT IT_RN1_DYNP_RECON_MPPS INTO WA_RN1_DYNP_RECON_MPPS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_DYNP_RECON_MPPS-PATNAM, sy-vline,
  WA_RN1_DYNP_RECON_MPPS-STUDYDAT, sy-vline,
  WA_RN1_DYNP_RECON_MPPS-STUDYTIM_EXT, sy-vline,
  WA_RN1_DYNP_RECON_MPPS-STUDYTIM, sy-vline,
  WA_RN1_DYNP_RECON_MPPS-REQPROCID, sy-vline,
  WA_RN1_DYNP_RECON_MPPS-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_DYNP_RECON_MPPS 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_RN1_DYNP_RECON_MPPS 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_RN1_DYNP_RECON_MPPS INTO WA_RN1_DYNP_RECON_MPPS.


*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 PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-LEIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-LEIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-LNRLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-LNRLS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERBOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-ERBOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-ERBOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSLOK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_RECON_MPPS-LSLOK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_RECON_MPPS-LSLOK.
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_RN1_DYNP_RECON_MPPS_STR, 
NODE_KEY TYPE STRING,
MANDT TYPE STRING,
MPPSID TYPE STRING,
RECNO TYPE STRING,
ACCNO TYPE STRING,
PATNAM TYPE STRING,
STUDYDAT TYPE STRING,
STUDYTIM_EXT TYPE STRING,
STUDYTIM TYPE STRING,
REQPROCID TYPE STRING,
STATUS TYPE STRING,
PATID TYPE STRING,
PATNR TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
GESCHL TYPE STRING,
STUDYUID TYPE STRING,
STUDYSTATUS TYPE STRING,
STUDYDSC TYPE STRING,
STUDYIMGCNT TYPE STRING,
PERFSTATAET TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
LEIST TYPE STRING,
LNRLS TYPE STRING,
ERBOE TYPE STRING,
LSSTAE TYPE STRING,
ANFID TYPE STRING,
LSLOK TYPE STRING,
VKGID TYPE STRING,
CONCNAME TYPE STRING,
RECONUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_DYNP_RECON_MPPS_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_RN1_DYNP_RECON_MPPS_STR-NODE_KEY sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-MANDT sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-MPPSID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-RECNO sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-ACCNO sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-PATNAM sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYDAT sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYTIM_EXT sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYTIM sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-REQPROCID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STATUS sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-PATID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-PATNR sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-GBDAT sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-GSCHL sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-GESCHL sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYUID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYSTATUS sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYDSC sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-STUDYIMGCNT sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-PERFSTATAET sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-EINRI sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-FALNR sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-LEIST sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-LNRLS sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-ERBOE sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-LSSTAE sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-ANFID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-LSLOK sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-VKGID sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-CONCNAME sy-vline 
WA_RN1_DYNP_RECON_MPPS_STR-RECONUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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