ABAP Select data from SAP table HRDESV_ALV_RPCELHD0_IN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRDESV_ALV_RPCELHD0_IN 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 HRDESV_ALV_RPCELHD0_IN. 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 HRDESV_ALV_RPCELHD0_IN 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_HRDESV_ALV_RPCELHD0_IN TYPE STANDARD TABLE OF HRDESV_ALV_RPCELHD0_IN,
      WA_HRDESV_ALV_RPCELHD0_IN TYPE HRDESV_ALV_RPCELHD0_IN,
      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: <HRDESV_ALV_RPCELHD0_IN> TYPE HRDESV_ALV_RPCELHD0_IN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRDESV_ALV_RPCELHD0_IN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRDESV_ALV_RPCELHD0_IN
  INTO TABLE IT_HRDESV_ALV_RPCELHD0_IN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDESV_ALV_RPCELHD0_IN
*  INTO TABLE @DATA(IT_HRDESV_ALV_RPCELHD0_IN2).
*--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_HRDESV_ALV_RPCELHD0_IN INDEX 1 INTO DATA(WA_HRDESV_ALV_RPCELHD0_IN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRDESV_ALV_RPCELHD0_IN ASSIGNING <HRDESV_ALV_RPCELHD0_IN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDESV_ALV_RPCELHD0_IN>-ELTYP = 1.
<HRDESV_ALV_RPCELHD0_IN>-GUID = 1.
<HRDESV_ALV_RPCELHD0_IN>-ENAME = 1.
<HRDESV_ALV_RPCELHD0_IN>-VSNR = 1.
<HRDESV_ALV_RPCELHD0_IN>-ELTTX = 1.

ENDLOOP.

LOOP AT IT_HRDESV_ALV_RPCELHD0_IN INTO WA_HRDESV_ALV_RPCELHD0_IN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDESV_ALV_RPCELHD0_IN-GD, sy-vline,
  WA_HRDESV_ALV_RPCELHD0_IN-GDTXT, sy-vline,
  WA_HRDESV_ALV_RPCELHD0_IN-MZBEG, sy-vline,
  WA_HRDESV_ALV_RPCELHD0_IN-MZEND, sy-vline,
  WA_HRDESV_ALV_RPCELHD0_IN-BBNRVU, sy-vline,
  WA_HRDESV_ALV_RPCELHD0_IN-RFCDST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDESV_ALV_RPCELHD0_IN 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_HRDESV_ALV_RPCELHD0_IN 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_HRDESV_ALV_RPCELHD0_IN INTO WA_HRDESV_ALV_RPCELHD0_IN.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRDESV_ALV_RPCELHD0_IN_STR, 
ELTYP TYPE STRING,
GUID TYPE STRING,
ENAME TYPE STRING,
VSNR TYPE STRING,
ELTTX TYPE STRING,
GD TYPE STRING,
GDTXT TYPE STRING,
MZBEG TYPE STRING,
MZEND TYPE STRING,
BBNRVU TYPE STRING,
RFCDST TYPE STRING,
SYST TYPE STRING,
MANDT TYPE STRING,
PERNR TYPE STRING,
OGUID TYPE STRING,
PERNR_AZVU TYPE STRING,
NOTIF TYPE STRING,
PLZ TYPE STRING,
ORT TYPE STRING,
STR TYPE STRING,
NR TYPE STRING,
GBNA TYPE STRING,
GBDT TYPE STRING,
GBOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDESV_ALV_RPCELHD0_IN_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_HRDESV_ALV_RPCELHD0_IN_STR-ELTYP sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GUID sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-ENAME sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-VSNR sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-ELTTX sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GD sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GDTXT sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-MZBEG sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-MZEND sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-BBNRVU sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-RFCDST sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-SYST sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-MANDT sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-PERNR sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-OGUID sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-PERNR_AZVU sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-NOTIF sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-PLZ sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-ORT sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-STR sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-NR sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GBNA sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GBDT sy-vline 
WA_HRDESV_ALV_RPCELHD0_IN_STR-GBOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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