ABAP Select data from SAP table HRMSS_S_EP_EVENT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRMSS_S_EP_EVENT_DATA
*  INTO TABLE @DATA(IT_HRMSS_S_EP_EVENT_DATA2).
*--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_HRMSS_S_EP_EVENT_DATA INDEX 1 INTO DATA(WA_HRMSS_S_EP_EVENT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRMSS_S_EP_EVENT_DATA>-PLVAR = 1.
<HRMSS_S_EP_EVENT_DATA>-EVEID = 1.
<HRMSS_S_EP_EVENT_DATA>-EVSHT = 1.
<HRMSS_S_EP_EVENT_DATA>-EVSTX = 1.
<HRMSS_S_EP_EVENT_DATA>-EVBEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRMSS_S_EP_EVENT_DATA-EVEND, sy-vline,
  WA_HRMSS_S_EP_EVENT_DATA-EVLNG, sy-vline,
  WA_HRMSS_S_EP_EVENT_DATA-LOCID, sy-vline,
  WA_HRMSS_S_EP_EVENT_DATA-LOCTX, sy-vline,
  WA_HRMSS_S_EP_EVENT_DATA-ISTAT, sy-vline,
  WA_HRMSS_S_EP_EVENT_DATA-EXTRN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRMSS_S_EP_EVENT_DATA 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_HRMSS_S_EP_EVENT_DATA 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_HRMSS_S_EP_EVENT_DATA INTO WA_HRMSS_S_EP_EVENT_DATA.


*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 ISOLA, internal->external for field EVLNG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_HRMSS_S_EP_EVENT_DATA-EVLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRMSS_S_EP_EVENT_DATA-EVLNG.
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_HRMSS_S_EP_EVENT_DATA_STR, 
PLVAR TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
EVLNG TYPE STRING,
LOCID TYPE STRING,
LOCTX TYPE STRING,
ISTAT TYPE STRING,
EXTRN TYPE STRING,
PRIOX TYPE STRING,
MANZL TYPE STRING,
BUDAT TYPE STRING,
SEQNR TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
DELET TYPE STRING,
LOCKM TYPE STRING,
HISTO TYPE STRING,
OTYPE TYPE STRING,
TFORM TYPE STRING,
TXTSHORT TYPE STRING,
STATUS TYPE STRING,
TRTTY TYPE STRING,
TRTID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRMSS_S_EP_EVENT_DATA_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_HRMSS_S_EP_EVENT_DATA_STR-PLVAR sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVEID sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVSHT sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVSTX sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVBEG sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVEND sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EVLNG sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-LOCID sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-LOCTX sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-ISTAT sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-EXTRN sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-PRIOX sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-MANZL sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-BUDAT sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-SEQNR sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-KKOST sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-KWAER sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-DELET sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-LOCKM sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-HISTO sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-OTYPE sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-TFORM sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-TXTSHORT sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-STATUS sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-TRTTY sy-vline 
WA_HRMSS_S_EP_EVENT_DATA_STR-TRTID sy-vline      INTO ld_text SEPARATED BY SPACE.

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