ABAP Select data from SAP table E1HR_ESC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1HR_ESC 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_ESC. 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_ESC 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_ESC TYPE STANDARD TABLE OF E1HR_ESC,
      WA_E1HR_ESC TYPE E1HR_ESC,
      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_ESC> TYPE E1HR_ESC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1HR_ESC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1HR_ESC
  INTO TABLE IT_E1HR_ESC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1HR_ESC
*  INTO TABLE @DATA(IT_E1HR_ESC2).
*--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_ESC INDEX 1 INTO DATA(WA_E1HR_ESC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1HR_ESC ASSIGNING <E1HR_ESC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1HR_ESC>-BEGDA = 1.
<E1HR_ESC>-ENDDA = 1.
<E1HR_ESC>-CTTYP = 1.
<E1HR_ESC>-CTNUM = 1.
<E1HR_ESC>-CTBEG = 1.

ENDLOOP.

LOOP AT IT_E1HR_ESC INTO WA_E1HR_ESC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1HR_ESC-CTEDT, sy-vline,
  WA_E1HR_ESC-WRKPL, sy-vline,
  WA_E1HR_ESC-KONSL, sy-vline,
  WA_E1HR_ESC-KONTX, sy-vline,
  WA_E1HR_ESC-NBTGK, sy-vline,
  WA_E1HR_ESC-WTTKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1HR_ESC 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_ESC 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_ESC INTO WA_E1HR_ESC.


*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_ESC_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
CTTYP TYPE STRING,
CTNUM TYPE STRING,
CTBEG TYPE STRING,
CTEDT TYPE STRING,
WRKPL TYPE STRING,
KONSL TYPE STRING,
KONTX TYPE STRING,
NBTGK TYPE STRING,
WTTKL TYPE STRING,
LFZFR TYPE STRING,
LFZZH TYPE STRING,
KGZFR TYPE STRING,
KGZZH TYPE STRING,
PRBZT TYPE STRING,
PRBEH TYPE STRING,
KDGFR TYPE STRING,
KDGTX TYPE STRING,
KDGF2 TYPE STRING,
KDGTX2 TYPE STRING,
ARBER TYPE STRING,
EINDT TYPE STRING,
KONDT TYPE STRING,
IDCON TYPE STRING,
FERED TYPE STRING,
REPRS TYPE STRING,
MOTIF TYPE STRING,
OFFIN TYPE STRING,
OFFRG TYPE STRING,
REGNR TYPE STRING,
FECRG TYPE STRING,
HORAS TYPE STRING,
UNIHO TYPE STRING,
DIAS TYPE STRING,
UNIDI TYPE STRING,
TURNO TYPE STRING,
NFORM TYPE STRING,
CODOCU TYPE STRING,
ICDESP TYPE STRING,
CCDESP TYPE STRING,
ALTDIR TYPE STRING,
ICONTE TYPE STRING,
CAUIN TYPE STRING,
TIACA TYPE STRING,
HOFOR TYPE STRING,
COLEF TYPE STRING,
COLBON TYPE STRING,
PJUPA TYPE STRING,
IDCONTR TYPE STRING,
FECCOM TYPE STRING,
USUCOM TYPE STRING,
FECABD TYPE STRING,
STACOM TYPE STRING,
OBLCB TYPE STRING,
LEGBON TYPE STRING,
LEGFOM TYPE STRING,
STACOP TYPE STRING,
NUMPRO TYPE STRING,
FECCOP TYPE STRING,
USUCOP TYPE STRING,
FEABDP TYPE STRING,
STACOC TYPE STRING,
FECCOC TYPE STRING,
USUCOC TYPE STRING,
ERRC01 TYPE STRING,
ERRC02 TYPE STRING,
ERRC03 TYPE STRING,
ERRC04 TYPE STRING,
ERRC05 TYPE STRING,
ERRC06 TYPE STRING,
ERRC07 TYPE STRING,
ERRC08 TYPE STRING,
ERRC09 TYPE STRING,
ERRC10 TYPE STRING,
ERRC11 TYPE STRING,
ERRC12 TYPE STRING,
ERRC13 TYPE STRING,
ERRC14 TYPE STRING,
ERRC15 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1HR_ESC_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_ESC_STR-BEGDA sy-vline 
WA_E1HR_ESC_STR-ENDDA sy-vline 
WA_E1HR_ESC_STR-CTTYP sy-vline 
WA_E1HR_ESC_STR-CTNUM sy-vline 
WA_E1HR_ESC_STR-CTBEG sy-vline 
WA_E1HR_ESC_STR-CTEDT sy-vline 
WA_E1HR_ESC_STR-WRKPL sy-vline 
WA_E1HR_ESC_STR-KONSL sy-vline 
WA_E1HR_ESC_STR-KONTX sy-vline 
WA_E1HR_ESC_STR-NBTGK sy-vline 
WA_E1HR_ESC_STR-WTTKL sy-vline 
WA_E1HR_ESC_STR-LFZFR sy-vline 
WA_E1HR_ESC_STR-LFZZH sy-vline 
WA_E1HR_ESC_STR-KGZFR sy-vline 
WA_E1HR_ESC_STR-KGZZH sy-vline 
WA_E1HR_ESC_STR-PRBZT sy-vline 
WA_E1HR_ESC_STR-PRBEH sy-vline 
WA_E1HR_ESC_STR-KDGFR sy-vline 
WA_E1HR_ESC_STR-KDGTX sy-vline 
WA_E1HR_ESC_STR-KDGF2 sy-vline 
WA_E1HR_ESC_STR-KDGTX2 sy-vline 
WA_E1HR_ESC_STR-ARBER sy-vline 
WA_E1HR_ESC_STR-EINDT sy-vline 
WA_E1HR_ESC_STR-KONDT sy-vline 
WA_E1HR_ESC_STR-IDCON sy-vline 
WA_E1HR_ESC_STR-FERED sy-vline 
WA_E1HR_ESC_STR-REPRS sy-vline 
WA_E1HR_ESC_STR-MOTIF sy-vline 
WA_E1HR_ESC_STR-OFFIN sy-vline 
WA_E1HR_ESC_STR-OFFRG sy-vline 
WA_E1HR_ESC_STR-REGNR sy-vline 
WA_E1HR_ESC_STR-FECRG sy-vline 
WA_E1HR_ESC_STR-HORAS sy-vline 
WA_E1HR_ESC_STR-UNIHO sy-vline 
WA_E1HR_ESC_STR-DIAS sy-vline 
WA_E1HR_ESC_STR-UNIDI sy-vline 
WA_E1HR_ESC_STR-TURNO sy-vline 
WA_E1HR_ESC_STR-NFORM sy-vline 
WA_E1HR_ESC_STR-CODOCU sy-vline 
WA_E1HR_ESC_STR-ICDESP sy-vline 
WA_E1HR_ESC_STR-CCDESP sy-vline 
WA_E1HR_ESC_STR-ALTDIR sy-vline 
WA_E1HR_ESC_STR-ICONTE sy-vline 
WA_E1HR_ESC_STR-CAUIN sy-vline 
WA_E1HR_ESC_STR-TIACA sy-vline 
WA_E1HR_ESC_STR-HOFOR sy-vline 
WA_E1HR_ESC_STR-COLEF sy-vline 
WA_E1HR_ESC_STR-COLBON sy-vline 
WA_E1HR_ESC_STR-PJUPA sy-vline 
WA_E1HR_ESC_STR-IDCONTR sy-vline 
WA_E1HR_ESC_STR-FECCOM sy-vline 
WA_E1HR_ESC_STR-USUCOM sy-vline 
WA_E1HR_ESC_STR-FECABD sy-vline 
WA_E1HR_ESC_STR-STACOM sy-vline 
WA_E1HR_ESC_STR-OBLCB sy-vline 
WA_E1HR_ESC_STR-LEGBON sy-vline 
WA_E1HR_ESC_STR-LEGFOM sy-vline 
WA_E1HR_ESC_STR-STACOP sy-vline 
WA_E1HR_ESC_STR-NUMPRO sy-vline 
WA_E1HR_ESC_STR-FECCOP sy-vline 
WA_E1HR_ESC_STR-USUCOP sy-vline 
WA_E1HR_ESC_STR-FEABDP sy-vline 
WA_E1HR_ESC_STR-STACOC sy-vline 
WA_E1HR_ESC_STR-FECCOC sy-vline 
WA_E1HR_ESC_STR-USUCOC sy-vline 
WA_E1HR_ESC_STR-ERRC01 sy-vline 
WA_E1HR_ESC_STR-ERRC02 sy-vline 
WA_E1HR_ESC_STR-ERRC03 sy-vline 
WA_E1HR_ESC_STR-ERRC04 sy-vline 
WA_E1HR_ESC_STR-ERRC05 sy-vline 
WA_E1HR_ESC_STR-ERRC06 sy-vline 
WA_E1HR_ESC_STR-ERRC07 sy-vline 
WA_E1HR_ESC_STR-ERRC08 sy-vline 
WA_E1HR_ESC_STR-ERRC09 sy-vline 
WA_E1HR_ESC_STR-ERRC10 sy-vline 
WA_E1HR_ESC_STR-ERRC11 sy-vline 
WA_E1HR_ESC_STR-ERRC12 sy-vline 
WA_E1HR_ESC_STR-ERRC13 sy-vline 
WA_E1HR_ESC_STR-ERRC14 sy-vline 
WA_E1HR_ESC_STR-ERRC15 sy-vline      INTO ld_text SEPARATED BY SPACE.

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