ABAP Select data from SAP table PSG08D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSG08D 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 PSG08D. 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 PSG08D 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_PSG08D TYPE STANDARD TABLE OF PSG08D,
      WA_PSG08D TYPE PSG08D,
      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: <PSG08D> TYPE PSG08D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PSG08D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PSG08D
  INTO TABLE IT_PSG08D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSG08D
*  INTO TABLE @DATA(IT_PSG08D2).
*--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_PSG08D INDEX 1 INTO DATA(WA_PSG08D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PSG08D ASSIGNING <PSG08D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSG08D>-PERNR = 1.
<PSG08D>-STYPE = 1.
<PSG08D>-STYPT = 1.
<PSG08D>-SCODE = 1.
<PSG08D>-PROCE = 1.

ENDLOOP.

LOOP AT IT_PSG08D INTO WA_PSG08D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSG08D-MASSG, sy-vline,
  WA_PSG08D-QPERIOD, sy-vline,
  WA_PSG08D-HIRED, sy-vline,
  WA_PSG08D-LEFTD, sy-vline,
  WA_PSG08D-PBSAMT, sy-vline,
  WA_PSG08D-PAAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSG08D 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_PSG08D 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_PSG08D INTO WA_PSG08D.


*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_PSG08D_STR, 
PERNR TYPE STRING,
STYPE TYPE STRING,
STYPT TYPE STRING,
SCODE TYPE STRING,
PROCE TYPE STRING,
MASSG TYPE STRING,
QPERIOD TYPE STRING,
HIRED TYPE STRING,
LEFTD TYPE STRING,
PBSAMT TYPE STRING,
PAAMT TYPE STRING,
APEAMT TYPE STRING,
MPBSAMT TYPE STRING,
MPAAMT TYPE STRING,
MAPEAMT TYPE STRING,
FNAME TYPE STRING,
ALIA TYPE STRING,
ICNUM TYPE STRING,
IDNUM TYPE STRING,
ICTYPE TYPE STRING,
ICCOL TYPE STRING,
DOB TYPE STRING,
AGE TYPE STRING,
SAPPT TYPE STRING,
DIV TYPE STRING,
MINISTRY TYPE STRING,
DEPT TYPE STRING,
TENURE TYPE STRING,
BNKAC TYPE STRING,
BNKNAME TYPE STRING,
BNKADDR TYPE STRING,
RETIRERSN TYPE STRING,
RETIRESECT TYPE STRING,
RETIRESECT1 TYPE STRING,
AMTREF TYPE STRING,
RECEIPTNO TYPE STRING,
RECEIPTDATE TYPE STRING,
ENCLNO TYPE STRING,
AMTNREF TYPE STRING,
CPFDEDN TYPE STRING,
CSAL TYPE STRING,
CALLOWN TYPE STRING,
CAPE TYPE STRING,
NCALYY TYPE STRING,
NCALMM TYPE STRING,
NCALDD TYPE STRING,
FPEN TYPE STRING,
RPEN TYPE STRING,
GRAT TYPE STRING,
FGRAT TYPE STRING,
FROAMT TYPE STRING,
WAERS TYPE STRING,
FROSAL TYPE STRING,
CPERIOD TYPE STRING,
RETDATE TYPE STRING,
LDS_PBSAMT TYPE STRING,
LDS_PAAMT TYPE STRING,
LDS_APEAMT TYPE STRING,
LDS_MPBSAMT TYPE STRING,
LDS_MPAAMT TYPE STRING,
LDS_MAPEAMT TYPE STRING,
LIAMT TYPE STRING,
MIN_AGE TYPE STRING,
NO_MONTH TYPE STRING,
DISCOUNT_FACTOR TYPE STRING,
DISCOUNT_FGRAT TYPE STRING,
DEDPC TYPE STRING,
RED_FACTOR TYPE STRING,
APORX TYPE STRING,
FGRAT_OLD TYPE STRING,
CPF_PAYMENT TYPE STRING,
PAGENO4 TYPE STRING,
PAGENO4A TYPE STRING,
PAGENO4B TYPE STRING,
PAGENO4C TYPE STRING,
PAGENO4D TYPE STRING,
PAGENO4E TYPE STRING,
PAGENO4F TYPE STRING,
PAGENO4G TYPE STRING,
PAGENO4H TYPE STRING,
PAGENO4I TYPE STRING,
PAGENO4J TYPE STRING,
PAGENO4K TYPE STRING,
PAGENO4L TYPE STRING,
PAGENO4M TYPE STRING,
PAGENO5 TYPE STRING,
PAGENO5A TYPE STRING,
PAGENO6 TYPE STRING,
PAGENO7 TYPE STRING,
PAGENO8 TYPE STRING,
QPCONTROL TYPE STRING,
NQPCONTROL TYPE STRING,
QPNET_FLAG TYPE STRING,
PDATE TYPE STRING,
PTIME TYPE STRING,
NS_BEGDA TYPE STRING,
NS_ENDDA TYPE STRING,
GROSS_LOS TYPE STRING,
AMTNREF2 TYPE STRING,
GPE_FLAG TYPE STRING,
MOSTFAVOR_NO TYPE STRING,
NAME2 TYPE STRING,
ALIA2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSG08D_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_PSG08D_STR-PERNR sy-vline 
WA_PSG08D_STR-STYPE sy-vline 
WA_PSG08D_STR-STYPT sy-vline 
WA_PSG08D_STR-SCODE sy-vline 
WA_PSG08D_STR-PROCE sy-vline 
WA_PSG08D_STR-MASSG sy-vline 
WA_PSG08D_STR-QPERIOD sy-vline 
WA_PSG08D_STR-HIRED sy-vline 
WA_PSG08D_STR-LEFTD sy-vline 
WA_PSG08D_STR-PBSAMT sy-vline 
WA_PSG08D_STR-PAAMT sy-vline 
WA_PSG08D_STR-APEAMT sy-vline 
WA_PSG08D_STR-MPBSAMT sy-vline 
WA_PSG08D_STR-MPAAMT sy-vline 
WA_PSG08D_STR-MAPEAMT sy-vline 
WA_PSG08D_STR-FNAME sy-vline 
WA_PSG08D_STR-ALIA sy-vline 
WA_PSG08D_STR-ICNUM sy-vline 
WA_PSG08D_STR-IDNUM sy-vline 
WA_PSG08D_STR-ICTYPE sy-vline 
WA_PSG08D_STR-ICCOL sy-vline 
WA_PSG08D_STR-DOB sy-vline 
WA_PSG08D_STR-AGE sy-vline 
WA_PSG08D_STR-SAPPT sy-vline 
WA_PSG08D_STR-DIV sy-vline 
WA_PSG08D_STR-MINISTRY sy-vline 
WA_PSG08D_STR-DEPT sy-vline 
WA_PSG08D_STR-TENURE sy-vline 
WA_PSG08D_STR-BNKAC sy-vline 
WA_PSG08D_STR-BNKNAME sy-vline 
WA_PSG08D_STR-BNKADDR sy-vline 
WA_PSG08D_STR-RETIRERSN sy-vline 
WA_PSG08D_STR-RETIRESECT sy-vline 
WA_PSG08D_STR-RETIRESECT1 sy-vline 
WA_PSG08D_STR-AMTREF sy-vline 
WA_PSG08D_STR-RECEIPTNO sy-vline 
WA_PSG08D_STR-RECEIPTDATE sy-vline 
WA_PSG08D_STR-ENCLNO sy-vline 
WA_PSG08D_STR-AMTNREF sy-vline 
WA_PSG08D_STR-CPFDEDN sy-vline 
WA_PSG08D_STR-CSAL sy-vline 
WA_PSG08D_STR-CALLOWN sy-vline 
WA_PSG08D_STR-CAPE sy-vline 
WA_PSG08D_STR-NCALYY sy-vline 
WA_PSG08D_STR-NCALMM sy-vline 
WA_PSG08D_STR-NCALDD sy-vline 
WA_PSG08D_STR-FPEN sy-vline 
WA_PSG08D_STR-RPEN sy-vline 
WA_PSG08D_STR-GRAT sy-vline 
WA_PSG08D_STR-FGRAT sy-vline 
WA_PSG08D_STR-FROAMT sy-vline 
WA_PSG08D_STR-WAERS sy-vline 
WA_PSG08D_STR-FROSAL sy-vline 
WA_PSG08D_STR-CPERIOD sy-vline 
WA_PSG08D_STR-RETDATE sy-vline 
WA_PSG08D_STR-LDS_PBSAMT sy-vline 
WA_PSG08D_STR-LDS_PAAMT sy-vline 
WA_PSG08D_STR-LDS_APEAMT sy-vline 
WA_PSG08D_STR-LDS_MPBSAMT sy-vline 
WA_PSG08D_STR-LDS_MPAAMT sy-vline 
WA_PSG08D_STR-LDS_MAPEAMT sy-vline 
WA_PSG08D_STR-LIAMT sy-vline 
WA_PSG08D_STR-MIN_AGE sy-vline 
WA_PSG08D_STR-NO_MONTH sy-vline 
WA_PSG08D_STR-DISCOUNT_FACTOR sy-vline 
WA_PSG08D_STR-DISCOUNT_FGRAT sy-vline 
WA_PSG08D_STR-DEDPC sy-vline 
WA_PSG08D_STR-RED_FACTOR sy-vline 
WA_PSG08D_STR-APORX sy-vline 
WA_PSG08D_STR-FGRAT_OLD sy-vline 
WA_PSG08D_STR-CPF_PAYMENT sy-vline 
WA_PSG08D_STR-PAGENO4 sy-vline 
WA_PSG08D_STR-PAGENO4A sy-vline 
WA_PSG08D_STR-PAGENO4B sy-vline 
WA_PSG08D_STR-PAGENO4C sy-vline 
WA_PSG08D_STR-PAGENO4D sy-vline 
WA_PSG08D_STR-PAGENO4E sy-vline 
WA_PSG08D_STR-PAGENO4F sy-vline 
WA_PSG08D_STR-PAGENO4G sy-vline 
WA_PSG08D_STR-PAGENO4H sy-vline 
WA_PSG08D_STR-PAGENO4I sy-vline 
WA_PSG08D_STR-PAGENO4J sy-vline 
WA_PSG08D_STR-PAGENO4K sy-vline 
WA_PSG08D_STR-PAGENO4L sy-vline 
WA_PSG08D_STR-PAGENO4M sy-vline 
WA_PSG08D_STR-PAGENO5 sy-vline 
WA_PSG08D_STR-PAGENO5A sy-vline 
WA_PSG08D_STR-PAGENO6 sy-vline 
WA_PSG08D_STR-PAGENO7 sy-vline 
WA_PSG08D_STR-PAGENO8 sy-vline 
WA_PSG08D_STR-QPCONTROL sy-vline 
WA_PSG08D_STR-NQPCONTROL sy-vline 
WA_PSG08D_STR-QPNET_FLAG sy-vline 
WA_PSG08D_STR-PDATE sy-vline 
WA_PSG08D_STR-PTIME sy-vline 
WA_PSG08D_STR-NS_BEGDA sy-vline 
WA_PSG08D_STR-NS_ENDDA sy-vline 
WA_PSG08D_STR-GROSS_LOS sy-vline 
WA_PSG08D_STR-AMTNREF2 sy-vline 
WA_PSG08D_STR-GPE_FLAG sy-vline 
WA_PSG08D_STR-MOSTFAVOR_NO sy-vline 
WA_PSG08D_STR-NAME2 sy-vline 
WA_PSG08D_STR-ALIA2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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