ABAP Select data from SAP table RNWP_PREREG_LIST_ISHMED into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWP_PREREG_LIST_ISHMED
*  INTO TABLE @DATA(IT_RNWP_PREREG_LIST_ISHMED2).
*--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_RNWP_PREREG_LIST_ISHMED INDEX 1 INTO DATA(WA_RNWP_PREREG_LIST_ISHMED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWP_PREREG_LIST_ISHMED>-AFNOEAKT = 1.
<RNWP_PREREG_LIST_ISHMED>-VISOEAKT = 1.
<RNWP_PREREG_LIST_ISHMED>-AFNOEAKT_KB = 1.
<RNWP_PREREG_LIST_ISHMED>-VISOEAKT_KB = 1.
<RNWP_PREREG_LIST_ISHMED>-AFNOEAKT_K = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWP_PREREG_LIST_ISHMED-VISOEAKT_K, sy-vline,
  WA_RNWP_PREREG_LIST_ISHMED-ICON_ANF, sy-vline,
  WA_RNWP_PREREG_LIST_ISHMED-ICON_DOC, sy-vline,
  WA_RNWP_PREREG_LIST_ISHMED-MEDDOK_ICON, sy-vline,
  WA_RNWP_PREREG_LIST_ISHMED-LABDOK_ICON, sy-vline,
  WA_RNWP_PREREG_LIST_ISHMED-VKLEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWP_PREREG_LIST_ISHMED 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_RNWP_PREREG_LIST_ISHMED 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_RNWP_PREREG_LIST_ISHMED INTO WA_RNWP_PREREG_LIST_ISHMED.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TRTGP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWP_PREREG_LIST_ISHMED-TRTGP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWP_PREREG_LIST_ISHMED-TRTGP.
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_RNWP_PREREG_LIST_ISHMED_STR, 
AFNOEAKT TYPE STRING,
VISOEAKT TYPE STRING,
AFNOEAKT_KB TYPE STRING,
VISOEAKT_KB TYPE STRING,
AFNOEAKT_K TYPE STRING,
VISOEAKT_K TYPE STRING,
ICON_ANF TYPE STRING,
ICON_DOC TYPE STRING,
MEDDOK_ICON TYPE STRING,
LABDOK_ICON TYPE STRING,
VKLEI TYPE STRING,
LKTAR TYPE STRING,
LKLST TYPE STRING,
LKBEZ TYPE STRING,
VKLEIBEZ TYPE STRING,
VKLEILOK TYPE STRING,
PREREGRO TYPE STRING,
PREREGROSN TYPE STRING,
PREREGDR TYPE STRING,
RISK_ICON TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
TRTGP TYPE STRING,
TRTGP_TXT TYPE STRING,
PRIO TYPE STRING,
APRIE TYPE STRING,
APRITXT TYPE STRING,
CPOSQUEST TYPE STRING,
CPOSQUESTIONID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWP_PREREG_LIST_ISHMED_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_RNWP_PREREG_LIST_ISHMED_STR-AFNOEAKT sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VISOEAKT sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-AFNOEAKT_KB sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VISOEAKT_KB sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-AFNOEAKT_K sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VISOEAKT_K sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-ICON_ANF sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-ICON_DOC sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-MEDDOK_ICON sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-LABDOK_ICON sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VKLEI sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-LKTAR sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-LKLST sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-LKBEZ sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VKLEIBEZ sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-VKLEILOK sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-PREREGRO sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-PREREGROSN sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-PREREGDR sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-RISK_ICON sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-STATUS sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-STATUS_TEXT sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-TRTGP sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-TRTGP_TXT sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-PRIO sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-APRIE sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-APRITXT sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-CPOSQUEST sy-vline 
WA_RNWP_PREREG_LIST_ISHMED_STR-CPOSQUESTIONID sy-vline      INTO ld_text SEPARATED BY SPACE.

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