ABAP Select data from SAP table PSG08 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSG08 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 PSG08. 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 PSG08 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_PSG08 TYPE STANDARD TABLE OF PSG08,
      WA_PSG08 TYPE PSG08,
      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: <PSG08> TYPE PSG08.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PSG08.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PSG08
  INTO TABLE IT_PSG08.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSG08
*  INTO TABLE @DATA(IT_PSG082).
*--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_PSG08 INDEX 1 INTO DATA(WA_PSG082).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PSG08 ASSIGNING <PSG08>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSG08>-PERNR = 1.
<PSG08>-STYPE = 1.
<PSG08>-STYPT = 1.
<PSG08>-SCODE = 1.
<PSG08>-PROCE = 1.

ENDLOOP.

LOOP AT IT_PSG08 INTO WA_PSG08.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSG08-MASSG, sy-vline,
  WA_PSG08-QPERIOD, sy-vline,
  WA_PSG08-NQPL, sy-vline,
  WA_PSG08-QPL, sy-vline,
  WA_PSG08-COMPQPL, sy-vline,
  WA_PSG08-CPFL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSG08 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_PSG08 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_PSG08 INTO WA_PSG08.


*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_PSG08_STR, 
PERNR TYPE STRING,
STYPE TYPE STRING,
STYPT TYPE STRING,
SCODE TYPE STRING,
PROCE TYPE STRING,
MASSG TYPE STRING,
QPERIOD TYPE STRING,
NQPL TYPE STRING,
QPL TYPE STRING,
COMPQPL TYPE STRING,
CPFL TYPE STRING,
OPTL 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,
FORMTY 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,
AVEL TYPE STRING,
SUMMARYL TYPE STRING,
PAGENO4 TYPE STRING,
PAGENO4A TYPE STRING,
PAGENO4B TYPE STRING,
PAGENO4C 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_PSG08_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_PSG08_STR-PERNR sy-vline 
WA_PSG08_STR-STYPE sy-vline 
WA_PSG08_STR-STYPT sy-vline 
WA_PSG08_STR-SCODE sy-vline 
WA_PSG08_STR-PROCE sy-vline 
WA_PSG08_STR-MASSG sy-vline 
WA_PSG08_STR-QPERIOD sy-vline 
WA_PSG08_STR-NQPL sy-vline 
WA_PSG08_STR-QPL sy-vline 
WA_PSG08_STR-COMPQPL sy-vline 
WA_PSG08_STR-CPFL sy-vline 
WA_PSG08_STR-OPTL sy-vline 
WA_PSG08_STR-HIRED sy-vline 
WA_PSG08_STR-LEFTD sy-vline 
WA_PSG08_STR-PBSAMT sy-vline 
WA_PSG08_STR-PAAMT sy-vline 
WA_PSG08_STR-APEAMT sy-vline 
WA_PSG08_STR-MPBSAMT sy-vline 
WA_PSG08_STR-MPAAMT sy-vline 
WA_PSG08_STR-MAPEAMT sy-vline 
WA_PSG08_STR-FNAME sy-vline 
WA_PSG08_STR-ALIA sy-vline 
WA_PSG08_STR-ICNUM sy-vline 
WA_PSG08_STR-IDNUM sy-vline 
WA_PSG08_STR-ICTYPE sy-vline 
WA_PSG08_STR-ICCOL sy-vline 
WA_PSG08_STR-DOB sy-vline 
WA_PSG08_STR-AGE sy-vline 
WA_PSG08_STR-SAPPT sy-vline 
WA_PSG08_STR-DIV sy-vline 
WA_PSG08_STR-MINISTRY sy-vline 
WA_PSG08_STR-DEPT sy-vline 
WA_PSG08_STR-TENURE sy-vline 
WA_PSG08_STR-BNKAC sy-vline 
WA_PSG08_STR-BNKNAME sy-vline 
WA_PSG08_STR-BNKADDR sy-vline 
WA_PSG08_STR-RETIRERSN sy-vline 
WA_PSG08_STR-RETIRESECT sy-vline 
WA_PSG08_STR-RETIRESECT1 sy-vline 
WA_PSG08_STR-AMTREF sy-vline 
WA_PSG08_STR-RECEIPTNO sy-vline 
WA_PSG08_STR-RECEIPTDATE sy-vline 
WA_PSG08_STR-ENCLNO sy-vline 
WA_PSG08_STR-AMTNREF sy-vline 
WA_PSG08_STR-CPFDEDN sy-vline 
WA_PSG08_STR-CSAL sy-vline 
WA_PSG08_STR-CALLOWN sy-vline 
WA_PSG08_STR-CAPE sy-vline 
WA_PSG08_STR-NCALYY sy-vline 
WA_PSG08_STR-NCALMM sy-vline 
WA_PSG08_STR-NCALDD sy-vline 
WA_PSG08_STR-FPEN sy-vline 
WA_PSG08_STR-RPEN sy-vline 
WA_PSG08_STR-GRAT sy-vline 
WA_PSG08_STR-FGRAT sy-vline 
WA_PSG08_STR-FROAMT sy-vline 
WA_PSG08_STR-WAERS sy-vline 
WA_PSG08_STR-FROSAL sy-vline 
WA_PSG08_STR-CPERIOD sy-vline 
WA_PSG08_STR-RETDATE sy-vline 
WA_PSG08_STR-FORMTY sy-vline 
WA_PSG08_STR-LDS_PBSAMT sy-vline 
WA_PSG08_STR-LDS_PAAMT sy-vline 
WA_PSG08_STR-LDS_APEAMT sy-vline 
WA_PSG08_STR-LDS_MPBSAMT sy-vline 
WA_PSG08_STR-LDS_MPAAMT sy-vline 
WA_PSG08_STR-LDS_MAPEAMT sy-vline 
WA_PSG08_STR-LIAMT sy-vline 
WA_PSG08_STR-MIN_AGE sy-vline 
WA_PSG08_STR-NO_MONTH sy-vline 
WA_PSG08_STR-DISCOUNT_FACTOR sy-vline 
WA_PSG08_STR-DISCOUNT_FGRAT sy-vline 
WA_PSG08_STR-DEDPC sy-vline 
WA_PSG08_STR-RED_FACTOR sy-vline 
WA_PSG08_STR-APORX sy-vline 
WA_PSG08_STR-FGRAT_OLD sy-vline 
WA_PSG08_STR-CPF_PAYMENT sy-vline 
WA_PSG08_STR-AVEL sy-vline 
WA_PSG08_STR-SUMMARYL sy-vline 
WA_PSG08_STR-PAGENO4 sy-vline 
WA_PSG08_STR-PAGENO4A sy-vline 
WA_PSG08_STR-PAGENO4B sy-vline 
WA_PSG08_STR-PAGENO4C sy-vline 
WA_PSG08_STR-PAGENO5 sy-vline 
WA_PSG08_STR-PAGENO5A sy-vline 
WA_PSG08_STR-PAGENO6 sy-vline 
WA_PSG08_STR-PAGENO7 sy-vline 
WA_PSG08_STR-PAGENO8 sy-vline 
WA_PSG08_STR-QPCONTROL sy-vline 
WA_PSG08_STR-NQPCONTROL sy-vline 
WA_PSG08_STR-QPNET_FLAG sy-vline 
WA_PSG08_STR-PDATE sy-vline 
WA_PSG08_STR-PTIME sy-vline 
WA_PSG08_STR-NS_BEGDA sy-vline 
WA_PSG08_STR-NS_ENDDA sy-vline 
WA_PSG08_STR-GROSS_LOS sy-vline 
WA_PSG08_STR-AMTNREF2 sy-vline 
WA_PSG08_STR-GPE_FLAG sy-vline 
WA_PSG08_STR-MOSTFAVOR_NO sy-vline 
WA_PSG08_STR-NAME2 sy-vline 
WA_PSG08_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.