ABAP Select data from SAP table E1HR_ESF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_ESF 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_ESF. 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_ESF 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_ESF TYPE STANDARD TABLE OF E1HR_ESF,
      WA_E1HR_ESF TYPE E1HR_ESF,
      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_ESF> TYPE E1HR_ESF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_ESF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_ESF
  INTO TABLE IT_E1HR_ESF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_ESF
*  INTO TABLE @DATA(IT_E1HR_ESF2).
*--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_ESF INDEX 1 INTO DATA(WA_E1HR_ESF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_ESF ASSIGNING <E1HR_ESF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_ESF>-BEGDA = 1.
<E1HR_ESF>-ENDDA = 1.
<E1HR_ESF>-CODIM = 1.
<E1HR_ESF>-CODAU = 1.
<E1HR_ESF>-FAMST = 1.

ENDLOOP.

LOOP AT IT_E1HR_ESF INTO WA_E1HR_ESF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_ESF-NOHIJ, sy-vline,
  WA_E1HR_ESF-SBRUT, sy-vline,
  WA_E1HR_ESF-VESFI, sy-vline,
  WA_E1HR_ESF-VESVR, sy-vline,
  WA_E1HR_ESF-PORAP, sy-vline,
  WA_E1HR_ESF-CPER1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_ESF 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_ESF 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_ESF INTO WA_E1HR_ESF.


*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_ESF_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
CODIM TYPE STRING,
CODAU TYPE STRING,
FAMST TYPE STRING,
NOHIJ TYPE STRING,
SBRUT TYPE STRING,
VESFI TYPE STRING,
VESVR TYPE STRING,
PORAP TYPE STRING,
CPER1 TYPE STRING,
MOTIV TYPE STRING,
MOTIT TYPE STRING,
FAMNU TYPE STRING,
PERTR TYPE STRING,
CPER2 TYPE STRING,
PGEES TYPE STRING,
PECOM TYPE STRING,
QLAND TYPE STRING,
RENIR TYPE STRING,
COTIZ TYPE STRING,
ALIME TYPE STRING,
REGRT TYPE STRING,
REGBR TYPE STRING,
PORA4 TYPE STRING,
PROVN TYPE STRING,
CD296 TYPE STRING,
PORDB TYPE STRING,
FFRMG TYPE STRING,
FNOIR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_ESF_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_ESF_STR-BEGDA sy-vline 
WA_E1HR_ESF_STR-ENDDA sy-vline 
WA_E1HR_ESF_STR-CODIM sy-vline 
WA_E1HR_ESF_STR-CODAU sy-vline 
WA_E1HR_ESF_STR-FAMST sy-vline 
WA_E1HR_ESF_STR-NOHIJ sy-vline 
WA_E1HR_ESF_STR-SBRUT sy-vline 
WA_E1HR_ESF_STR-VESFI sy-vline 
WA_E1HR_ESF_STR-VESVR sy-vline 
WA_E1HR_ESF_STR-PORAP sy-vline 
WA_E1HR_ESF_STR-CPER1 sy-vline 
WA_E1HR_ESF_STR-MOTIV sy-vline 
WA_E1HR_ESF_STR-MOTIT sy-vline 
WA_E1HR_ESF_STR-FAMNU sy-vline 
WA_E1HR_ESF_STR-PERTR sy-vline 
WA_E1HR_ESF_STR-CPER2 sy-vline 
WA_E1HR_ESF_STR-PGEES sy-vline 
WA_E1HR_ESF_STR-PECOM sy-vline 
WA_E1HR_ESF_STR-QLAND sy-vline 
WA_E1HR_ESF_STR-RENIR sy-vline 
WA_E1HR_ESF_STR-COTIZ sy-vline 
WA_E1HR_ESF_STR-ALIME sy-vline 
WA_E1HR_ESF_STR-REGRT sy-vline 
WA_E1HR_ESF_STR-REGBR sy-vline 
WA_E1HR_ESF_STR-PORA4 sy-vline 
WA_E1HR_ESF_STR-PROVN sy-vline 
WA_E1HR_ESF_STR-CD296 sy-vline 
WA_E1HR_ESF_STR-PORDB sy-vline 
WA_E1HR_ESF_STR-FFRMG sy-vline 
WA_E1HR_ESF_STR-FNOIR sy-vline      INTO ld_text SEPARATED BY SPACE.

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