ABAP Select data from SAP table EHS_PERNR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHS_PERNR
*  INTO TABLE @DATA(IT_EHS_PERNR2).
*--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_EHS_PERNR INDEX 1 INTO DATA(WA_EHS_PERNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHS_PERNR>-PERNR = 1.
<EHS_PERNR>-BUKRS = 1.
<EHS_PERNR>-WERKS = 1.
<EHS_PERNR>-PERSG = 1.
<EHS_PERNR>-PERSK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHS_PERNR-GSBER, sy-vline,
  WA_EHS_PERNR-BTRTL, sy-vline,
  WA_EHS_PERNR-ABKRS, sy-vline,
  WA_EHS_PERNR-ORGEH, sy-vline,
  WA_EHS_PERNR-KOSTL, sy-vline,
  WA_EHS_PERNR-MSTBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHS_PERNR 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_EHS_PERNR 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_EHS_PERNR INTO WA_EHS_PERNR.


*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_EHS_PERNR-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHS_PERNR-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_EHS_PERNR-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHS_PERNR-GBDAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EHS_PERNR-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHS_PERNR-SPRSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HCENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHS_PERNR-HCENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHS_PERNR-HCENT.
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_EHS_PERNR_STR, 
PERNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
GSBER TYPE STRING,
BTRTL TYPE STRING,
ABKRS TYPE STRING,
ORGEH TYPE STRING,
KOSTL TYPE STRING,
MSTBR TYPE STRING,
PLANS TYPE STRING,
STELL TYPE STRING,
SNAME TYPE STRING,
ENAME TYPE STRING,
OTYPE TYPE STRING,
KOKRS TYPE STRING,
DAYPS TYPE STRING,
GESCH TYPE STRING,
GBDAT TYPE STRING,
GBLND TYPE STRING,
GBORT TYPE STRING,
NATIO TYPE STRING,
FAMST TYPE STRING,
SPRSL TYPE STRING,
STAT2 TYPE STRING,
HCENT TYPE STRING,
PERID TYPE STRING,
PERSON_ID TYPE STRING,
PERSON_FLAG TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHS_PERNR_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_EHS_PERNR_STR-PERNR sy-vline 
WA_EHS_PERNR_STR-BUKRS sy-vline 
WA_EHS_PERNR_STR-WERKS sy-vline 
WA_EHS_PERNR_STR-PERSG sy-vline 
WA_EHS_PERNR_STR-PERSK sy-vline 
WA_EHS_PERNR_STR-GSBER sy-vline 
WA_EHS_PERNR_STR-BTRTL sy-vline 
WA_EHS_PERNR_STR-ABKRS sy-vline 
WA_EHS_PERNR_STR-ORGEH sy-vline 
WA_EHS_PERNR_STR-KOSTL sy-vline 
WA_EHS_PERNR_STR-MSTBR sy-vline 
WA_EHS_PERNR_STR-PLANS sy-vline 
WA_EHS_PERNR_STR-STELL sy-vline 
WA_EHS_PERNR_STR-SNAME sy-vline 
WA_EHS_PERNR_STR-ENAME sy-vline 
WA_EHS_PERNR_STR-OTYPE sy-vline 
WA_EHS_PERNR_STR-KOKRS sy-vline 
WA_EHS_PERNR_STR-DAYPS sy-vline 
WA_EHS_PERNR_STR-GESCH sy-vline 
WA_EHS_PERNR_STR-GBDAT sy-vline 
WA_EHS_PERNR_STR-GBLND sy-vline 
WA_EHS_PERNR_STR-GBORT sy-vline 
WA_EHS_PERNR_STR-NATIO sy-vline 
WA_EHS_PERNR_STR-FAMST sy-vline 
WA_EHS_PERNR_STR-SPRSL sy-vline 
WA_EHS_PERNR_STR-STAT2 sy-vline 
WA_EHS_PERNR_STR-HCENT sy-vline 
WA_EHS_PERNR_STR-PERID sy-vline 
WA_EHS_PERNR_STR-PERSON_ID sy-vline 
WA_EHS_PERNR_STR-PERSON_FLAG sy-vline 
WA_EHS_PERNR_STR-NACHN sy-vline 
WA_EHS_PERNR_STR-VORNA sy-vline      INTO ld_text SEPARATED BY SPACE.

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