ABAP Select data from SAP table M_HRPAD99 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP M_HRPAD99 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 M_HRPAD99. 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 M_HRPAD99 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_M_HRPAD99 TYPE STANDARD TABLE OF M_HRPAD99,
      WA_M_HRPAD99 TYPE M_HRPAD99,
      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: <M_HRPAD99> TYPE M_HRPAD99.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_M_HRPAD99.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM M_HRPAD99
  INTO TABLE IT_M_HRPAD99.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM M_HRPAD99
*  INTO TABLE @DATA(IT_M_HRPAD992).
*--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_M_HRPAD99 INDEX 1 INTO DATA(WA_M_HRPAD992).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_M_HRPAD99 ASSIGNING <M_HRPAD99>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<M_HRPAD99>-MANDT = 1.
<M_HRPAD99>-NCHMC = 1.
<M_HRPAD99>-VNAMC = 1.
<M_HRPAD99>-NACHN = 1.
<M_HRPAD99>-VORNA = 1.

ENDLOOP.

LOOP AT IT_M_HRPAD99 INTO WA_M_HRPAD99.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_M_HRPAD99-FNAMR, sy-vline,
  WA_M_HRPAD99-LNAMR, sy-vline,
  WA_M_HRPAD99-TITEL, sy-vline,
  WA_M_HRPAD99-GBDAT, sy-vline,
  WA_M_HRPAD99-PERNR, sy-vline,
  WA_M_HRPAD99-BEGDA_0002, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_M_HRPAD99 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_M_HRPAD99 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_M_HRPAD99 INTO WA_M_HRPAD99.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_M_HRPAD99-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_HRPAD99-GBDAT.
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_M_HRPAD99_STR, 
MANDT TYPE STRING,
NCHMC TYPE STRING,
VNAMC TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
FNAMR TYPE STRING,
LNAMR TYPE STRING,
TITEL TYPE STRING,
GBDAT TYPE STRING,
PERNR TYPE STRING,
BEGDA_0002 TYPE STRING,
ENDDA_0002 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_M_HRPAD99_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_M_HRPAD99_STR-MANDT sy-vline 
WA_M_HRPAD99_STR-NCHMC sy-vline 
WA_M_HRPAD99_STR-VNAMC sy-vline 
WA_M_HRPAD99_STR-NACHN sy-vline 
WA_M_HRPAD99_STR-VORNA sy-vline 
WA_M_HRPAD99_STR-FNAMR sy-vline 
WA_M_HRPAD99_STR-LNAMR sy-vline 
WA_M_HRPAD99_STR-TITEL sy-vline 
WA_M_HRPAD99_STR-GBDAT sy-vline 
WA_M_HRPAD99_STR-PERNR sy-vline 
WA_M_HRPAD99_STR-BEGDA_0002 sy-vline 
WA_M_HRPAD99_STR-ENDDA_0002 sy-vline      INTO ld_text SEPARATED BY SPACE.

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