ABAP Select data from SAP table RN1_DYNP_ME_ADDITIVE 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_ME_ADDITIVE 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_ME_ADDITIVE. 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_ME_ADDITIVE 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_ME_ADDITIVE TYPE STANDARD TABLE OF RN1_DYNP_ME_ADDITIVE,
      WA_RN1_DYNP_ME_ADDITIVE TYPE RN1_DYNP_ME_ADDITIVE,
      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_ME_ADDITIVE> TYPE RN1_DYNP_ME_ADDITIVE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_DYNP_ME_ADDITIVE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_DYNP_ME_ADDITIVE
  INTO TABLE IT_RN1_DYNP_ME_ADDITIVE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_DYNP_ME_ADDITIVE
*  INTO TABLE @DATA(IT_RN1_DYNP_ME_ADDITIVE2).
*--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_ME_ADDITIVE INDEX 1 INTO DATA(WA_RN1_DYNP_ME_ADDITIVE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_DYNP_ME_ADDITIVE ASSIGNING <RN1_DYNP_ME_ADDITIVE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_DYNP_ME_ADDITIVE>-CALCUD = 1.
<RN1_DYNP_ME_ADDITIVE>-CALCFACT = 1.
<RN1_DYNP_ME_ADDITIVE>-CALCFACTU = 1.
<RN1_DYNP_ME_ADDITIVE>-SOLUTION = 1.
<RN1_DYNP_ME_ADDITIVE>-RECAA = 1.

ENDLOOP.

LOOP AT IT_RN1_DYNP_ME_ADDITIVE INTO WA_RN1_DYNP_ME_ADDITIVE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_DYNP_ME_ADDITIVE-RECU, sy-vline,
  WA_RN1_DYNP_ME_ADDITIVE-TOTVOL, sy-vline,
  WA_RN1_DYNP_ME_ADDITIVE-TOTVOLU, sy-vline,
  WA_RN1_DYNP_ME_ADDITIVE-WEIGHT, sy-vline,
  WA_RN1_DYNP_ME_ADDITIVE-WEIGHTUNIT, sy-vline,
  WA_RN1_DYNP_ME_ADDITIVE-HEIGHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_DYNP_ME_ADDITIVE 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_ME_ADDITIVE 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_ME_ADDITIVE INTO WA_RN1_DYNP_ME_ADDITIVE.


*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 MEQUA, internal->external for field CALCFACT
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_ADDITIVE-CALCFACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_ADDITIVE-CALCFACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field RECAA
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_ADDITIVE-RECAA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_ADDITIVE-RECAA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field TOTVOL
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_ADDITIVE-TOTVOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_ADDITIVE-TOTVOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_ADDITIVE-WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_ADDITIVE-WEIGHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field HEIGHT
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_ADDITIVE-HEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_ADDITIVE-HEIGHT.
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_ME_ADDITIVE_STR, 
CALCUD TYPE STRING,
CALCFACT TYPE STRING,
CALCFACTU TYPE STRING,
SOLUTION TYPE STRING,
RECAA TYPE STRING,
RECU TYPE STRING,
TOTVOL TYPE STRING,
TOTVOLU TYPE STRING,
WEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
HEIGHT TYPE STRING,
HEIGHTUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_DYNP_ME_ADDITIVE_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_ME_ADDITIVE_STR-CALCUD sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-CALCFACT sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-CALCFACTU sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-SOLUTION sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-RECAA sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-RECU sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-TOTVOL sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-TOTVOLU sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-WEIGHT sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-WEIGHTUNIT sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-HEIGHT sy-vline 
WA_RN1_DYNP_ME_ADDITIVE_STR-HEIGHTUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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