ABAP Select data from SAP table RN1_DYNP_ME_EXTEMP_COMP 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_EXTEMP_COMP 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_EXTEMP_COMP. 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_EXTEMP_COMP 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_EXTEMP_COMP TYPE STANDARD TABLE OF RN1_DYNP_ME_EXTEMP_COMP,
      WA_RN1_DYNP_ME_EXTEMP_COMP TYPE RN1_DYNP_ME_EXTEMP_COMP,
      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_EXTEMP_COMP> TYPE RN1_DYNP_ME_EXTEMP_COMP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_DYNP_ME_EXTEMP_COMP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_DYNP_ME_EXTEMP_COMP
  INTO TABLE IT_RN1_DYNP_ME_EXTEMP_COMP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_DYNP_ME_EXTEMP_COMP
*  INTO TABLE @DATA(IT_RN1_DYNP_ME_EXTEMP_COMP2).
*--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_EXTEMP_COMP INDEX 1 INTO DATA(WA_RN1_DYNP_ME_EXTEMP_COMP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_DYNP_ME_EXTEMP_COMP ASSIGNING <RN1_DYNP_ME_EXTEMP_COMP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_DYNP_ME_EXTEMP_COMP>-RB_INGRED_DOSE = 1.
<RN1_DYNP_ME_EXTEMP_COMP>-RB_INGRED_ORDER = 1.
<RN1_DYNP_ME_EXTEMP_COMP>-WEIGHT = 1.
<RN1_DYNP_ME_EXTEMP_COMP>-WEIGHTUNIT = 1.
<RN1_DYNP_ME_EXTEMP_COMP>-HEIGHT = 1.

ENDLOOP.

LOOP AT IT_RN1_DYNP_ME_EXTEMP_COMP INTO WA_RN1_DYNP_ME_EXTEMP_COMP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_DYNP_ME_EXTEMP_COMP-HEIGHTUNIT, sy-vline,
  WA_RN1_DYNP_ME_EXTEMP_COMP-DOSE, sy-vline,
  WA_RN1_DYNP_ME_EXTEMP_COMP-DOSEU, sy-vline,
  WA_RN1_DYNP_ME_EXTEMP_COMP-RECQUAN, sy-vline,
  WA_RN1_DYNP_ME_EXTEMP_COMP-RECQUANU, sy-vline,
  WA_RN1_DYNP_ME_EXTEMP_COMP-FIXQUAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_DYNP_ME_EXTEMP_COMP 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_EXTEMP_COMP 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_EXTEMP_COMP INTO WA_RN1_DYNP_ME_EXTEMP_COMP.


*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 WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_EXTEMP_COMP-WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_EXTEMP_COMP-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_EXTEMP_COMP-HEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_EXTEMP_COMP-HEIGHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field DOSE
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_EXTEMP_COMP-DOSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_EXTEMP_COMP-DOSE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field RECQUAN
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_ME_EXTEMP_COMP-RECQUAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_ME_EXTEMP_COMP-RECQUAN.
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_EXTEMP_COMP_STR, 
RB_INGRED_DOSE TYPE STRING,
RB_INGRED_ORDER TYPE STRING,
WEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
HEIGHT TYPE STRING,
HEIGHTUNIT TYPE STRING,
DOSE TYPE STRING,
DOSEU TYPE STRING,
RECQUAN TYPE STRING,
RECQUANU TYPE STRING,
FIXQUAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_DYNP_ME_EXTEMP_COMP_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_EXTEMP_COMP_STR-RB_INGRED_DOSE sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-RB_INGRED_ORDER sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-WEIGHT sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-WEIGHTUNIT sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-HEIGHT sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-HEIGHTUNIT sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-DOSE sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-DOSEU sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-RECQUAN sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-RECQUANU sy-vline 
WA_RN1_DYNP_ME_EXTEMP_COMP_STR-FIXQUAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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