ABAP Select data from SAP table HRDESV_BV_S_ALV_MLD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRDESV_BV_S_ALV_MLD 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_BV_S_ALV_MLD. 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_BV_S_ALV_MLD 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_BV_S_ALV_MLD TYPE STANDARD TABLE OF HRDESV_BV_S_ALV_MLD,
      WA_HRDESV_BV_S_ALV_MLD TYPE HRDESV_BV_S_ALV_MLD,
      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_BV_S_ALV_MLD> TYPE HRDESV_BV_S_ALV_MLD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDESV_BV_S_ALV_MLD
*  INTO TABLE @DATA(IT_HRDESV_BV_S_ALV_MLD2).
*--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_BV_S_ALV_MLD INDEX 1 INTO DATA(WA_HRDESV_BV_S_ALV_MLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDESV_BV_S_ALV_MLD>-BVTYP = 1.
<HRDESV_BV_S_ALV_MLD>-BVTTX = 1.
<HRDESV_BV_S_ALV_MLD>-PERNR = 1.
<HRDESV_BV_S_ALV_MLD>-ENAME = 1.
<HRDESV_BV_S_ALV_MLD>-ABMO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDESV_BV_S_ALV_MLD-VEMO, sy-vline,
  WA_HRDESV_BV_S_ALV_MLD-BBNRAB, sy-vline,
  WA_HRDESV_BV_S_ALV_MLD-BBNRVU, sy-vline,
  WA_HRDESV_BV_S_ALV_MLD-BBNRBV, sy-vline,
  WA_HRDESV_BV_S_ALV_MLD-MNRBV, sy-vline,
  WA_HRDESV_BV_S_ALV_MLD-LGA_DISP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDESV_BV_S_ALV_MLD 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_BV_S_ALV_MLD 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_BV_S_ALV_MLD INTO WA_HRDESV_BV_S_ALV_MLD.


*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_BV_S_ALV_MLD_STR, 
BVTYP TYPE STRING,
BVTTX TYPE STRING,
PERNR TYPE STRING,
ENAME TYPE STRING,
ABMO TYPE STRING,
VEMO TYPE STRING,
BBNRAB TYPE STRING,
BBNRVU TYPE STRING,
BBNRBV TYPE STRING,
MNRBV TYPE STRING,
LGA_DISP TYPE STRING,
EGA_DISP TYPE STRING,
EGAB_DISP TYPE STRING,
PB_DISP TYPE STRING,
BZ TYPE STRING,
STATUS TYPE STRING,
STATTX TYPE STRING,
ADDSTATTX TYPE STRING,
MSGNR TYPE STRING,
MSGTX TYPE STRING,
SACHA TYPE STRING,
SACHN TYPE STRING,
TELNR TYPE STRING,
SNAME TYPE STRING,
ED TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
REPORT TYPE STRING,
EUSER TYPE STRING,
ICONSTAT TYPE STRING,
GUID TYPE STRING,
GUID_STORN TYPE STRING,
GUID_CNECT TYPE STRING,
R_NOTIF TYPE STRING,
R_NOTIF_CNNCT TYPE STRING,
SET_STAT TYPE STRING,
DEL_NOTIF TYPE STRING,
CONDENSE TYPE STRING,
ROW_COLOUR TYPE STRING,
CELL_STYLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDESV_BV_S_ALV_MLD_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_BV_S_ALV_MLD_STR-BVTYP sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-BVTTX sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-PERNR sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ENAME sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ABMO sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-VEMO sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-BBNRAB sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-BBNRVU sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-BBNRBV sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-MNRBV sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-LGA_DISP sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-EGA_DISP sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-EGAB_DISP sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-PB_DISP sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-BZ sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-STATUS sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-STATTX sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ADDSTATTX sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-MSGNR sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-MSGTX sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-SACHA sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-SACHN sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-TELNR sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-SNAME sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ED sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-DATUM sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-UZEIT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-REPORT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-EUSER sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ICONSTAT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-GUID sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-GUID_STORN sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-GUID_CNECT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-R_NOTIF sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-R_NOTIF_CNNCT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-SET_STAT sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-DEL_NOTIF sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-CONDENSE sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-ROW_COLOUR sy-vline 
WA_HRDESV_BV_S_ALV_MLD_STR-CELL_STYLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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