ABAP Select data from SAP table HRPS_PWE_HDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPS_PWE_HDR
*  INTO TABLE @DATA(IT_HRPS_PWE_HDR2).
*--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_HRPS_PWE_HDR INDEX 1 INTO DATA(WA_HRPS_PWE_HDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPS_PWE_HDR>-REQTYPE = 1.
<HRPS_PWE_HDR>-MOLGA = 1.
<HRPS_PWE_HDR>-PERNR = 1.
<HRPS_PWE_HDR>-BUKRS = 1.
<HRPS_PWE_HDR>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPS_PWE_HDR-BTRTL, sy-vline,
  WA_HRPS_PWE_HDR-PERSG, sy-vline,
  WA_HRPS_PWE_HDR-PERSK, sy-vline,
  WA_HRPS_PWE_HDR-ANSVH, sy-vline,
  WA_HRPS_PWE_HDR-GSBER, sy-vline,
  WA_HRPS_PWE_HDR-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPS_PWE_HDR 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_HRPS_PWE_HDR 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_HRPS_PWE_HDR INTO WA_HRPS_PWE_HDR.


*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 ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRPS_PWE_HDR-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRPS_PWE_HDR-KOSTL.
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_HRPS_PWE_HDR_STR, 
REQTYPE TYPE STRING,
MOLGA TYPE STRING,
PERNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ANSVH TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
PLANS TYPE STRING,
ABKRS TYPE STRING,
STELL TYPE STRING,
OBJSCEN TYPE STRING,
UPNAM TYPE STRING,
PRSCN TYPE STRING,
STATUS TYPE STRING,
APRFNR TYPE STRING,
PSBEG TYPE STRING,
PSEND TYPE STRING,
PRCSR TYPE STRING,
GRPPS TYPE STRING,
USRVAL TYPE STRING,
ADATE TYPE STRING,
OBJPS TYPE STRING,
SEQNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPS_PWE_HDR_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_HRPS_PWE_HDR_STR-REQTYPE sy-vline 
WA_HRPS_PWE_HDR_STR-MOLGA sy-vline 
WA_HRPS_PWE_HDR_STR-PERNR sy-vline 
WA_HRPS_PWE_HDR_STR-BUKRS sy-vline 
WA_HRPS_PWE_HDR_STR-WERKS sy-vline 
WA_HRPS_PWE_HDR_STR-BTRTL sy-vline 
WA_HRPS_PWE_HDR_STR-PERSG sy-vline 
WA_HRPS_PWE_HDR_STR-PERSK sy-vline 
WA_HRPS_PWE_HDR_STR-ANSVH sy-vline 
WA_HRPS_PWE_HDR_STR-GSBER sy-vline 
WA_HRPS_PWE_HDR_STR-KOSTL sy-vline 
WA_HRPS_PWE_HDR_STR-ORGEH sy-vline 
WA_HRPS_PWE_HDR_STR-PLANS sy-vline 
WA_HRPS_PWE_HDR_STR-ABKRS sy-vline 
WA_HRPS_PWE_HDR_STR-STELL sy-vline 
WA_HRPS_PWE_HDR_STR-OBJSCEN sy-vline 
WA_HRPS_PWE_HDR_STR-UPNAM sy-vline 
WA_HRPS_PWE_HDR_STR-PRSCN sy-vline 
WA_HRPS_PWE_HDR_STR-STATUS sy-vline 
WA_HRPS_PWE_HDR_STR-APRFNR sy-vline 
WA_HRPS_PWE_HDR_STR-PSBEG sy-vline 
WA_HRPS_PWE_HDR_STR-PSEND sy-vline 
WA_HRPS_PWE_HDR_STR-PRCSR sy-vline 
WA_HRPS_PWE_HDR_STR-GRPPS sy-vline 
WA_HRPS_PWE_HDR_STR-USRVAL sy-vline 
WA_HRPS_PWE_HDR_STR-ADATE sy-vline 
WA_HRPS_PWE_HDR_STR-OBJPS sy-vline 
WA_HRPS_PWE_HDR_STR-SEQNR sy-vline 
WA_HRPS_PWE_HDR_STR-BEGDA sy-vline 
WA_HRPS_PWE_HDR_STR-ENDDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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