ABAP Select data from SAP table PEG_ASSWBS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEG_ASSWBS
*  INTO TABLE @DATA(IT_PEG_ASSWBS2).
*--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_PEG_ASSWBS INDEX 1 INTO DATA(WA_PEG_ASSWBS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEG_ASSWBS>-POSKI = 1.
<PEG_ASSWBS>-ERNAM = 1.
<PEG_ASSWBS>-AENAM = 1.
<PEG_ASSWBS>-PBUKR = 1.
<PEG_ASSWBS>-PGSBR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEG_ASSWBS-PKOKR, sy-vline,
  WA_PEG_ASSWBS-PRCTR, sy-vline,
  WA_PEG_ASSWBS-PRART, sy-vline,
  WA_PEG_ASSWBS-ZUORD, sy-vline,
  WA_PEG_ASSWBS-ZSCHL, sy-vline,
  WA_PEG_ASSWBS-ABGSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEG_ASSWBS 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_PEG_ASSWBS 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_PEG_ASSWBS INTO WA_PEG_ASSWBS.


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

*Conversion exit ALPHA, internal->external for field AKSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-AKSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-AKSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FKSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-FKSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-FKSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-USE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field VLPSP
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-VLPSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-VLPSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-RECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ETYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-ETYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-ETYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-OTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-OTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CGPL_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PEG_ASSWBS-CGPL_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_ASSWBS-CGPL_LOGSYS.
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_PEG_ASSWBS_STR, 
POSKI TYPE STRING,
ERNAM TYPE STRING,
AENAM TYPE STRING,
PBUKR TYPE STRING,
PGSBR TYPE STRING,
PKOKR TYPE STRING,
PRCTR TYPE STRING,
PRART TYPE STRING,
ZUORD TYPE STRING,
ZSCHL TYPE STRING,
ABGSL TYPE STRING,
AKOKR TYPE STRING,
AKSTL TYPE STRING,
FKOKR TYPE STRING,
FKSTL TYPE STRING,
TPLNR TYPE STRING,
PWPOS TYPE STRING,
WERKS TYPE STRING,
USR00 TYPE STRING,
USR01 TYPE STRING,
USR02 TYPE STRING,
USR03 TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
USR06 TYPE STRING,
USE06 TYPE STRING,
USR07 TYPE STRING,
USE07 TYPE STRING,
USR08 TYPE STRING,
USR09 TYPE STRING,
USR10 TYPE STRING,
USR11 TYPE STRING,
KOSTL TYPE STRING,
STORT TYPE STRING,
FUNC_AREA TYPE STRING,
KLVAR TYPE STRING,
KALNR TYPE STRING,
PSPKZ TYPE STRING,
MATNR TYPE STRING,
VLPSP TYPE STRING,
VLPKZ TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
SORT3 TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ETYPE TYPE STRING,
OTYPE TYPE STRING,
JIBCL TYPE STRING,
JIBSA TYPE STRING,
CGPL_GUID16 TYPE STRING,
CGPL_LOGSYS TYPE STRING,
CGPL_OBJTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEG_ASSWBS_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_PEG_ASSWBS_STR-POSKI sy-vline 
WA_PEG_ASSWBS_STR-ERNAM sy-vline 
WA_PEG_ASSWBS_STR-AENAM sy-vline 
WA_PEG_ASSWBS_STR-PBUKR sy-vline 
WA_PEG_ASSWBS_STR-PGSBR sy-vline 
WA_PEG_ASSWBS_STR-PKOKR sy-vline 
WA_PEG_ASSWBS_STR-PRCTR sy-vline 
WA_PEG_ASSWBS_STR-PRART sy-vline 
WA_PEG_ASSWBS_STR-ZUORD sy-vline 
WA_PEG_ASSWBS_STR-ZSCHL sy-vline 
WA_PEG_ASSWBS_STR-ABGSL sy-vline 
WA_PEG_ASSWBS_STR-AKOKR sy-vline 
WA_PEG_ASSWBS_STR-AKSTL sy-vline 
WA_PEG_ASSWBS_STR-FKOKR sy-vline 
WA_PEG_ASSWBS_STR-FKSTL sy-vline 
WA_PEG_ASSWBS_STR-TPLNR sy-vline 
WA_PEG_ASSWBS_STR-PWPOS sy-vline 
WA_PEG_ASSWBS_STR-WERKS sy-vline 
WA_PEG_ASSWBS_STR-USR00 sy-vline 
WA_PEG_ASSWBS_STR-USR01 sy-vline 
WA_PEG_ASSWBS_STR-USR02 sy-vline 
WA_PEG_ASSWBS_STR-USR03 sy-vline 
WA_PEG_ASSWBS_STR-USR04 sy-vline 
WA_PEG_ASSWBS_STR-USE04 sy-vline 
WA_PEG_ASSWBS_STR-USR05 sy-vline 
WA_PEG_ASSWBS_STR-USE05 sy-vline 
WA_PEG_ASSWBS_STR-USR06 sy-vline 
WA_PEG_ASSWBS_STR-USE06 sy-vline 
WA_PEG_ASSWBS_STR-USR07 sy-vline 
WA_PEG_ASSWBS_STR-USE07 sy-vline 
WA_PEG_ASSWBS_STR-USR08 sy-vline 
WA_PEG_ASSWBS_STR-USR09 sy-vline 
WA_PEG_ASSWBS_STR-USR10 sy-vline 
WA_PEG_ASSWBS_STR-USR11 sy-vline 
WA_PEG_ASSWBS_STR-KOSTL sy-vline 
WA_PEG_ASSWBS_STR-STORT sy-vline 
WA_PEG_ASSWBS_STR-FUNC_AREA sy-vline 
WA_PEG_ASSWBS_STR-KLVAR sy-vline 
WA_PEG_ASSWBS_STR-KALNR sy-vline 
WA_PEG_ASSWBS_STR-PSPKZ sy-vline 
WA_PEG_ASSWBS_STR-MATNR sy-vline 
WA_PEG_ASSWBS_STR-VLPSP sy-vline 
WA_PEG_ASSWBS_STR-VLPKZ sy-vline 
WA_PEG_ASSWBS_STR-SORT1 sy-vline 
WA_PEG_ASSWBS_STR-SORT2 sy-vline 
WA_PEG_ASSWBS_STR-SORT3 sy-vline 
WA_PEG_ASSWBS_STR-VNAME sy-vline 
WA_PEG_ASSWBS_STR-RECID sy-vline 
WA_PEG_ASSWBS_STR-ETYPE sy-vline 
WA_PEG_ASSWBS_STR-OTYPE sy-vline 
WA_PEG_ASSWBS_STR-JIBCL sy-vline 
WA_PEG_ASSWBS_STR-JIBSA sy-vline 
WA_PEG_ASSWBS_STR-CGPL_GUID16 sy-vline 
WA_PEG_ASSWBS_STR-CGPL_LOGSYS sy-vline 
WA_PEG_ASSWBS_STR-CGPL_OBJTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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