ABAP Select data from SAP table RN1MED_ME_SLDOSE_ORDER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1MED_ME_SLDOSE_ORDER 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 RN1MED_ME_SLDOSE_ORDER. 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 RN1MED_ME_SLDOSE_ORDER 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_RN1MED_ME_SLDOSE_ORDER TYPE STANDARD TABLE OF RN1MED_ME_SLDOSE_ORDER,
      WA_RN1MED_ME_SLDOSE_ORDER TYPE RN1MED_ME_SLDOSE_ORDER,
      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: <RN1MED_ME_SLDOSE_ORDER> TYPE RN1MED_ME_SLDOSE_ORDER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1MED_ME_SLDOSE_ORDER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1MED_ME_SLDOSE_ORDER
  INTO TABLE IT_RN1MED_ME_SLDOSE_ORDER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1MED_ME_SLDOSE_ORDER
*  INTO TABLE @DATA(IT_RN1MED_ME_SLDOSE_ORDER2).
*--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_RN1MED_ME_SLDOSE_ORDER INDEX 1 INTO DATA(WA_RN1MED_ME_SLDOSE_ORDER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1MED_ME_SLDOSE_ORDER ASSIGNING <RN1MED_ME_SLDOSE_ORDER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1MED_ME_SLDOSE_ORDER>-MANDT = 1.
<RN1MED_ME_SLDOSE_ORDER>-SLDOSEID = 1.
<RN1MED_ME_SLDOSE_ORDER>-MEORDID = 1.
<RN1MED_ME_SLDOSE_ORDER>-MEORDID_X = 1.
<RN1MED_ME_SLDOSE_ORDER>-SEQID = 1.

ENDLOOP.

LOOP AT IT_RN1MED_ME_SLDOSE_ORDER INTO WA_RN1MED_ME_SLDOSE_ORDER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1MED_ME_SLDOSE_ORDER-SEQID_X, sy-vline,
  WA_RN1MED_ME_SLDOSE_ORDER-DOSE, sy-vline,
  WA_RN1MED_ME_SLDOSE_ORDER-DOSE_X, sy-vline,
  WA_RN1MED_ME_SLDOSE_ORDER-RECAA, sy-vline,
  WA_RN1MED_ME_SLDOSE_ORDER-RECAA_X, sy-vline,
  WA_RN1MED_ME_SLDOSE_ORDER-ZNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1MED_ME_SLDOSE_ORDER 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_RN1MED_ME_SLDOSE_ORDER 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_RN1MED_ME_SLDOSE_ORDER INTO WA_RN1MED_ME_SLDOSE_ORDER.


*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 DOSE
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-DOSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-DOSE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field RECAA
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-RECAA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-RECAA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field DUR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-DUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field DRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-DRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-DRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field CMQUAN
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-CMQUAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-CMQUAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-CMU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-CMU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field PDUR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-PDUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-PDUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PDURU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RN1MED_ME_SLDOSE_ORDER-PDURU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MED_ME_SLDOSE_ORDER-PDURU.
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_RN1MED_ME_SLDOSE_ORDER_STR, 
MANDT TYPE STRING,
SLDOSEID TYPE STRING,
MEORDID TYPE STRING,
MEORDID_X TYPE STRING,
SEQID TYPE STRING,
SEQID_X TYPE STRING,
DOSE TYPE STRING,
DOSE_X TYPE STRING,
RECAA TYPE STRING,
RECAA_X TYPE STRING,
ZNR TYPE STRING,
ZNR_X TYPE STRING,
DUR TYPE STRING,
DUR_X TYPE STRING,
BEGDAT TYPE STRING,
BEGDAT_X TYPE STRING,
KZ TYPE STRING,
DOSDEF TYPE STRING,
DOSDEF_X TYPE STRING,
DC_USED TYPE STRING,
DC_USED_X TYPE STRING,
DRUGASTR TYPE STRING,
DRUGASTR_X TYPE STRING,
DRUGASTRU TYPE STRING,
DRUGASTRU_X TYPE STRING,
CALCUD TYPE STRING,
CALCUD_X TYPE STRING,
CMQUAN TYPE STRING,
CMQUAN_X TYPE STRING,
CMU TYPE STRING,
CMU_X TYPE STRING,
DCM TYPE STRING,
DCM_X TYPE STRING,
COMP_USED TYPE STRING,
COMP_USED_X TYPE STRING,
COMP_TYPE TYPE STRING,
COMP_TYPE_X TYPE STRING,
PDUR TYPE STRING,
PDUR_X TYPE STRING,
PDURU TYPE STRING,
PDURU_X TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1MED_ME_SLDOSE_ORDER_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_RN1MED_ME_SLDOSE_ORDER_STR-MANDT sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-SLDOSEID sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-MEORDID sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-MEORDID_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-SEQID sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-SEQID_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DOSE sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DOSE_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-RECAA sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-RECAA_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-ZNR sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-ZNR_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DUR sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DUR_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-BEGDAT sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-BEGDAT_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-KZ sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DOSDEF sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DOSDEF_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DC_USED sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DC_USED_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DRUGASTR sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DRUGASTR_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DRUGASTRU sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DRUGASTRU_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CALCUD sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CALCUD_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CMQUAN sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CMQUAN_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CMU sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-CMU_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DCM sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-DCM_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-COMP_USED sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-COMP_USED_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-COMP_TYPE sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-COMP_TYPE_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-PDUR sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-PDUR_X sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-PDURU sy-vline 
WA_RN1MED_ME_SLDOSE_ORDER_STR-PDURU_X sy-vline      INTO ld_text SEPARATED BY SPACE.

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