ABAP Select data from SAP table E1HR_PI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_PI 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 E1HR_PI. 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 E1HR_PI 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_E1HR_PI TYPE STANDARD TABLE OF E1HR_PI,
      WA_E1HR_PI TYPE E1HR_PI,
      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: <E1HR_PI> TYPE E1HR_PI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_PI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_PI
  INTO TABLE IT_E1HR_PI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_PI
*  INTO TABLE @DATA(IT_E1HR_PI2).
*--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_E1HR_PI INDEX 1 INTO DATA(WA_E1HR_PI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_PI ASSIGNING <E1HR_PI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_PI>-BEGDA = 1.
<E1HR_PI>-ENDDA = 1.
<E1HR_PI>-ICTYP = 1.
<E1HR_PI>-ICNUM = 1.
<E1HR_PI>-ICOLD = 1.

ENDLOOP.

LOOP AT IT_E1HR_PI INTO WA_E1HR_PI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_PI-AUTH1, sy-vline,
  WA_E1HR_PI-DOCN1, sy-vline,
  WA_E1HR_PI-FPDAT, sy-vline,
  WA_E1HR_PI-EXPID, sy-vline,
  WA_E1HR_PI-ISSPL, sy-vline,
  WA_E1HR_PI-ISCOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_PI 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_E1HR_PI 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_E1HR_PI INTO WA_E1HR_PI.


*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_E1HR_PI_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ICTYP TYPE STRING,
ICNUM TYPE STRING,
ICOLD TYPE STRING,
AUTH1 TYPE STRING,
DOCN1 TYPE STRING,
FPDAT TYPE STRING,
EXPID TYPE STRING,
ISSPL TYPE STRING,
ISCOT TYPE STRING,
IDCOT TYPE STRING,
OVCHK TYPE STRING,
RESIS TYPE STRING,
FWOCD TYPE STRING,
FWORK TYPE STRING,
DATE2 TYPE STRING,
DOCN2 TYPE STRING,
EXPDT TYPE STRING,
AUTH2 TYPE STRING,
LANDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_PI_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_E1HR_PI_STR-BEGDA sy-vline 
WA_E1HR_PI_STR-ENDDA sy-vline 
WA_E1HR_PI_STR-ICTYP sy-vline 
WA_E1HR_PI_STR-ICNUM sy-vline 
WA_E1HR_PI_STR-ICOLD sy-vline 
WA_E1HR_PI_STR-AUTH1 sy-vline 
WA_E1HR_PI_STR-DOCN1 sy-vline 
WA_E1HR_PI_STR-FPDAT sy-vline 
WA_E1HR_PI_STR-EXPID sy-vline 
WA_E1HR_PI_STR-ISSPL sy-vline 
WA_E1HR_PI_STR-ISCOT sy-vline 
WA_E1HR_PI_STR-IDCOT sy-vline 
WA_E1HR_PI_STR-OVCHK sy-vline 
WA_E1HR_PI_STR-RESIS sy-vline 
WA_E1HR_PI_STR-FWOCD sy-vline 
WA_E1HR_PI_STR-FWORK sy-vline 
WA_E1HR_PI_STR-DATE2 sy-vline 
WA_E1HR_PI_STR-DOCN2 sy-vline 
WA_E1HR_PI_STR-EXPDT sy-vline 
WA_E1HR_PI_STR-AUTH2 sy-vline 
WA_E1HR_PI_STR-LANDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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