ABAP Select data from SAP table IWLFPERSDOC_SVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFPERSDOC_SVH
*  INTO TABLE @DATA(IT_IWLFPERSDOC_SVH2).
*--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_IWLFPERSDOC_SVH INDEX 1 INTO DATA(WA_IWLFPERSDOC_SVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFPERSDOC_SVH>-MANDT = 1.
<IWLFPERSDOC_SVH>-PERSONNELSETTLEMENTDOCUMENT = 1.
<IWLFPERSDOC_SVH>-SETTLMTDOCTYPE = 1.
<IWLFPERSDOC_SVH>-SETTLMTDOCTYPEDESC = 1.
<IWLFPERSDOC_SVH>-PERSONWORKAGREEMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFPERSDOC_SVH-PERSONFULLNAME, sy-vline,
  WA_IWLFPERSDOC_SVH-SETTLMTCOMPENSATIONREASON, sy-vline,
  WA_IWLFPERSDOC_SVH-SETTLMTCOMPNRSNDESC, sy-vline,
  WA_IWLFPERSDOC_SVH-SETTLMTCOMPNVAR, sy-vline,
  WA_IWLFPERSDOC_SVH-SETTLMTCOMPNVARDESC, sy-vline,
  WA_IWLFPERSDOC_SVH-COMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFPERSDOC_SVH 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_IWLFPERSDOC_SVH 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_IWLFPERSDOC_SVH INTO WA_IWLFPERSDOC_SVH.


*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 PERSONNELSETTLEMENTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSDOC_SVH-PERSONNELSETTLEMENTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSDOC_SVH-PERSONNELSETTLEMENTDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERSONNELCOSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFPERSDOC_SVH-PERSONNELCOSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFPERSDOC_SVH-PERSONNELCOSTCENTER.
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_IWLFPERSDOC_SVH_STR, 
MANDT TYPE STRING,
PERSONNELSETTLEMENTDOCUMENT TYPE STRING,
SETTLMTDOCTYPE TYPE STRING,
SETTLMTDOCTYPEDESC TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
PERSONFULLNAME TYPE STRING,
SETTLMTCOMPENSATIONREASON TYPE STRING,
SETTLMTCOMPNRSNDESC TYPE STRING,
SETTLMTCOMPNVAR TYPE STRING,
SETTLMTCOMPNVARDESC TYPE STRING,
COMPANYCODE TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
PERSONNELCOSTCENTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFPERSDOC_SVH_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_IWLFPERSDOC_SVH_STR-MANDT sy-vline 
WA_IWLFPERSDOC_SVH_STR-PERSONNELSETTLEMENTDOCUMENT sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTDOCTYPE sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTDOCTYPEDESC sy-vline 
WA_IWLFPERSDOC_SVH_STR-PERSONWORKAGREEMENT sy-vline 
WA_IWLFPERSDOC_SVH_STR-PERSONFULLNAME sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTCOMPENSATIONREASON sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTCOMPNRSNDESC sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTCOMPNVAR sy-vline 
WA_IWLFPERSDOC_SVH_STR-SETTLMTCOMPNVARDESC sy-vline 
WA_IWLFPERSDOC_SVH_STR-COMPANYCODE sy-vline 
WA_IWLFPERSDOC_SVH_STR-SALESORGANIZATION sy-vline 
WA_IWLFPERSDOC_SVH_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_IWLFPERSDOC_SVH_STR-DIVISION sy-vline 
WA_IWLFPERSDOC_SVH_STR-PERSONNELCOSTCENTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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