ABAP Select data from SAP table P44_HPA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P44_HPA 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 P44_HPA. 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 P44_HPA 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_P44_HPA TYPE STANDARD TABLE OF P44_HPA,
      WA_P44_HPA TYPE P44_HPA,
      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: <P44_HPA> TYPE P44_HPA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P44_HPA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P44_HPA
  INTO TABLE IT_P44_HPA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P44_HPA
*  INTO TABLE @DATA(IT_P44_HPA2).
*--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_P44_HPA INDEX 1 INTO DATA(WA_P44_HPA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P44_HPA ASSIGNING <P44_HPA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P44_HPA>-BUKRS = 1.
<P44_HPA>-KOKRS = 1.
<P44_HPA>-KOSTL = 1.
<P44_HPA>-GSBER = 1.
<P44_HPA>-PERNR = 1.

ENDLOOP.

LOOP AT IT_P44_HPA INTO WA_P44_HPA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P44_HPA-ENAME, sy-vline,
  WA_P44_HPA-HIRED, sy-vline,
  WA_P44_HPA-HQTYR, sy-vline,
  WA_P44_HPA-HVDYS, sy-vline,
  WA_P44_HPA-HVRTE, sy-vline,
  WA_P44_HPA-HVAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P44_HPA 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_P44_HPA 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_P44_HPA INTO WA_P44_HPA.


*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_P44_HPA-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P44_HPA-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_P44_HPA_STR, 
BUKRS TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
GSBER TYPE STRING,
PERNR TYPE STRING,
ENAME TYPE STRING,
HIRED TYPE STRING,
HQTYR TYPE STRING,
HVDYS TYPE STRING,
HVRTE TYPE STRING,
HVAMT TYPE STRING,
HBDYS TYPE STRING,
HBRTE TYPE STRING,
HBAMT TYPE STRING,
LBDYS TYPE STRING,
LBRTE TYPE STRING,
LBAMT TYPE STRING,
HADYS TYPE STRING,
HARTE TYPE STRING,
HAAMT TYPE STRING,
TOTAL TYPE STRING,
WAERS TYPE STRING,
SUM_SOCIAL TYPE STRING,
SUM_TOTAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P44_HPA_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_P44_HPA_STR-BUKRS sy-vline 
WA_P44_HPA_STR-KOKRS sy-vline 
WA_P44_HPA_STR-KOSTL sy-vline 
WA_P44_HPA_STR-GSBER sy-vline 
WA_P44_HPA_STR-PERNR sy-vline 
WA_P44_HPA_STR-ENAME sy-vline 
WA_P44_HPA_STR-HIRED sy-vline 
WA_P44_HPA_STR-HQTYR sy-vline 
WA_P44_HPA_STR-HVDYS sy-vline 
WA_P44_HPA_STR-HVRTE sy-vline 
WA_P44_HPA_STR-HVAMT sy-vline 
WA_P44_HPA_STR-HBDYS sy-vline 
WA_P44_HPA_STR-HBRTE sy-vline 
WA_P44_HPA_STR-HBAMT sy-vline 
WA_P44_HPA_STR-LBDYS sy-vline 
WA_P44_HPA_STR-LBRTE sy-vline 
WA_P44_HPA_STR-LBAMT sy-vline 
WA_P44_HPA_STR-HADYS sy-vline 
WA_P44_HPA_STR-HARTE sy-vline 
WA_P44_HPA_STR-HAAMT sy-vline 
WA_P44_HPA_STR-TOTAL sy-vline 
WA_P44_HPA_STR-WAERS sy-vline 
WA_P44_HPA_STR-SUM_SOCIAL sy-vline 
WA_P44_HPA_STR-SUM_TOTAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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