ABAP Select data from SAP table PEGOBLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEGOBLOG
*  INTO TABLE @DATA(IT_PEGOBLOG2).
*--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_PEGOBLOG INDEX 1 INTO DATA(WA_PEGOBLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEGOBLOG>-GRPNR = 1.
<PEGOBLOG>-WERKS = 1.
<PEGOBLOG>-MATNR = 1.
<PEGOBLOG>-EBELN = 1.
<PEGOBLOG>-EBELP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEGOBLOG-ZEKKN, sy-vline,
  WA_PEGOBLOG-AUFNR, sy-vline,
  WA_PEGOBLOG-KTEXT, sy-vline,
  WA_PEGOBLOG-PGORIGREQ, sy-vline,
  WA_PEGOBLOG-RESOBJNR, sy-vline,
  WA_PEGOBLOG-RSNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEGOBLOG 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_PEGOBLOG 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_PEGOBLOG INTO WA_PEGOBLOG.


*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_PEGOBLOG-GRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEGOBLOG-GRPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PEGOBLOG-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEGOBLOG-VORNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field PGREQUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEGOBLOG-PGREQUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEGOBLOG-PGREQUNIT.
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_PEGOBLOG_STR, 
GRPNR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
AUFNR TYPE STRING,
KTEXT TYPE STRING,
PGORIGREQ TYPE STRING,
RESOBJNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
PGTOPMAT TYPE STRING,
CMPPNR TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
UPDFLG TYPE STRING,
MARK TYPE STRING,
PGDUMMY TYPE STRING,
PGTOTQTY TYPE STRING,
MEINS TYPE STRING,
PGREQQTY TYPE STRING,
PGREQUNIT TYPE STRING,
QTYNEEDED TYPE STRING,
ASSQTYFREE TYPE STRING,
ASSQTYFIX TYPE STRING,
ASSQTYFREEUE TYPE STRING,
ASSQTYFIXUE TYPE STRING,
PGOBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEGOBLOG_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_PEGOBLOG_STR-GRPNR sy-vline 
WA_PEGOBLOG_STR-WERKS sy-vline 
WA_PEGOBLOG_STR-MATNR sy-vline 
WA_PEGOBLOG_STR-EBELN sy-vline 
WA_PEGOBLOG_STR-EBELP sy-vline 
WA_PEGOBLOG_STR-ZEKKN sy-vline 
WA_PEGOBLOG_STR-AUFNR sy-vline 
WA_PEGOBLOG_STR-KTEXT sy-vline 
WA_PEGOBLOG_STR-PGORIGREQ sy-vline 
WA_PEGOBLOG_STR-RESOBJNR sy-vline 
WA_PEGOBLOG_STR-RSNUM sy-vline 
WA_PEGOBLOG_STR-RSPOS sy-vline 
WA_PEGOBLOG_STR-PGTOPMAT sy-vline 
WA_PEGOBLOG_STR-CMPPNR sy-vline 
WA_PEGOBLOG_STR-NPLNR sy-vline 
WA_PEGOBLOG_STR-VORNR sy-vline 
WA_PEGOBLOG_STR-UPDFLG sy-vline 
WA_PEGOBLOG_STR-MARK sy-vline 
WA_PEGOBLOG_STR-PGDUMMY sy-vline 
WA_PEGOBLOG_STR-PGTOTQTY sy-vline 
WA_PEGOBLOG_STR-MEINS sy-vline 
WA_PEGOBLOG_STR-PGREQQTY sy-vline 
WA_PEGOBLOG_STR-PGREQUNIT sy-vline 
WA_PEGOBLOG_STR-QTYNEEDED sy-vline 
WA_PEGOBLOG_STR-ASSQTYFREE sy-vline 
WA_PEGOBLOG_STR-ASSQTYFIX sy-vline 
WA_PEGOBLOG_STR-ASSQTYFREEUE sy-vline 
WA_PEGOBLOG_STR-ASSQTYFIXUE sy-vline 
WA_PEGOBLOG_STR-PGOBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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