ABAP Select data from SAP table HRVPAD34 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRVPAD34 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 HRVPAD34. 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 HRVPAD34 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_HRVPAD34 TYPE STANDARD TABLE OF HRVPAD34,
      WA_HRVPAD34 TYPE HRVPAD34,
      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: <HRVPAD34> TYPE HRVPAD34.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRVPAD34.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRVPAD34
  INTO TABLE IT_HRVPAD34.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRVPAD34
*  INTO TABLE @DATA(IT_HRVPAD342).
*--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_HRVPAD34 INDEX 1 INTO DATA(WA_HRVPAD342).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRVPAD34 ASSIGNING <HRVPAD34>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRVPAD34>-MANDT = 1.
<HRVPAD34>-OTYPE = 1.
<HRVPAD34>-OBJID = 1.
<HRVPAD34>-PLVAR = 1.
<HRVPAD34>-RSIGN = 1.

ENDLOOP.

LOOP AT IT_HRVPAD34 INTO WA_HRVPAD34.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRVPAD34-RELAT, sy-vline,
  WA_HRVPAD34-ISTAT, sy-vline,
  WA_HRVPAD34-PRIOX, sy-vline,
  WA_HRVPAD34-BEGDA, sy-vline,
  WA_HRVPAD34-ENDDA, sy-vline,
  WA_HRVPAD34-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRVPAD34 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_HRVPAD34 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_HRVPAD34 INTO WA_HRVPAD34.


*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_HRVPAD34-EVLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRVPAD34-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_HRVPAD34_STR, 
MANDT TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
PLVAR TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
INFTY TYPE STRING,
OTJID TYPE STRING,
SUBTY TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
SCLAS TYPE STRING,
SOBID TYPE STRING,
MANZL TYPE STRING,
EVEID TYPE STRING,
EVTEX TYPE STRING,
ETEXT TYPE STRING,
EVLNG TYPE STRING,
LOCID TYPE STRING,
LOTEX TYPE STRING,
LTEXT TYPE STRING,
ZDATA TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
INTEX TYPE STRING,
NDAYS TYPE STRING,
NHOURS TYPE STRING,
ADATANR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRVPAD34_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_HRVPAD34_STR-MANDT sy-vline 
WA_HRVPAD34_STR-OTYPE sy-vline 
WA_HRVPAD34_STR-OBJID sy-vline 
WA_HRVPAD34_STR-PLVAR sy-vline 
WA_HRVPAD34_STR-RSIGN sy-vline 
WA_HRVPAD34_STR-RELAT sy-vline 
WA_HRVPAD34_STR-ISTAT sy-vline 
WA_HRVPAD34_STR-PRIOX sy-vline 
WA_HRVPAD34_STR-BEGDA sy-vline 
WA_HRVPAD34_STR-ENDDA sy-vline 
WA_HRVPAD34_STR-VARYF sy-vline 
WA_HRVPAD34_STR-SEQNR sy-vline 
WA_HRVPAD34_STR-INFTY sy-vline 
WA_HRVPAD34_STR-OTJID sy-vline 
WA_HRVPAD34_STR-SUBTY sy-vline 
WA_HRVPAD34_STR-REASN sy-vline 
WA_HRVPAD34_STR-HISTO sy-vline 
WA_HRVPAD34_STR-SCLAS sy-vline 
WA_HRVPAD34_STR-SOBID sy-vline 
WA_HRVPAD34_STR-MANZL sy-vline 
WA_HRVPAD34_STR-EVEID sy-vline 
WA_HRVPAD34_STR-EVTEX sy-vline 
WA_HRVPAD34_STR-ETEXT sy-vline 
WA_HRVPAD34_STR-EVLNG sy-vline 
WA_HRVPAD34_STR-LOCID sy-vline 
WA_HRVPAD34_STR-LOTEX sy-vline 
WA_HRVPAD34_STR-LTEXT sy-vline 
WA_HRVPAD34_STR-ZDATA sy-vline 
WA_HRVPAD34_STR-KKOST sy-vline 
WA_HRVPAD34_STR-KWAER sy-vline 
WA_HRVPAD34_STR-INTEX sy-vline 
WA_HRVPAD34_STR-NDAYS sy-vline 
WA_HRVPAD34_STR-NHOURS sy-vline 
WA_HRVPAD34_STR-ADATANR sy-vline      INTO ld_text SEPARATED BY SPACE.

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