ABAP Select data from SAP table PEGOB into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEGOB
*  INTO TABLE @DATA(IT_PEGOB2).
*--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_PEGOB INDEX 1 INTO DATA(WA_PEGOB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEGOB>-MANDT = 1.
<PEGOB>-OBJNR = 1.
<PEGOB>-KOKRS = 1.
<PEGOB>-BUKRS = 1.
<PEGOB>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEGOB-GRPNR, sy-vline,
  WA_PEGOB-WERKS, sy-vline,
  WA_PEGOB-MATNR, sy-vline,
  WA_PEGOB-REPOBJ, sy-vline,
  WA_PEGOB-ORGREQ, sy-vline,
  WA_PEGOB-CMPPNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEGOB 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_PEGOB 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_PEGOB INTO WA_PEGOB.


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

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

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

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

*Conversion exit CUNIT, internal->external for field REQUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEGOB-REQUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEGOB-REQUNIT.
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_PEGOB_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
KOKRS TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
GRPNR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
REPOBJ TYPE STRING,
ORGREQ TYPE STRING,
CMPPNR TYPE STRING,
KTEXT TYPE STRING,
TOTQTY TYPE STRING,
MEINS TYPE STRING,
DELFG TYPE STRING,
CLOSED TYPE STRING,
PGUNI TYPE STRING,
REQQTY TYPE STRING,
REQUNIT TYPE STRING,
QTYNEEDED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEGOB_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_PEGOB_STR-MANDT sy-vline 
WA_PEGOB_STR-OBJNR sy-vline 
WA_PEGOB_STR-KOKRS sy-vline 
WA_PEGOB_STR-BUKRS sy-vline 
WA_PEGOB_STR-WAERS sy-vline 
WA_PEGOB_STR-GRPNR sy-vline 
WA_PEGOB_STR-WERKS sy-vline 
WA_PEGOB_STR-MATNR sy-vline 
WA_PEGOB_STR-REPOBJ sy-vline 
WA_PEGOB_STR-ORGREQ sy-vline 
WA_PEGOB_STR-CMPPNR sy-vline 
WA_PEGOB_STR-KTEXT sy-vline 
WA_PEGOB_STR-TOTQTY sy-vline 
WA_PEGOB_STR-MEINS sy-vline 
WA_PEGOB_STR-DELFG sy-vline 
WA_PEGOB_STR-CLOSED sy-vline 
WA_PEGOB_STR-PGUNI sy-vline 
WA_PEGOB_STR-REQQTY sy-vline 
WA_PEGOB_STR-REQUNIT sy-vline 
WA_PEGOB_STR-QTYNEEDED sy-vline      INTO ld_text SEPARATED BY SPACE.

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