ABAP Select data from SAP table FSH_POG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FSH_POG
*  INTO TABLE @DATA(IT_FSH_POG2).
*--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_FSH_POG INDEX 1 INTO DATA(WA_FSH_POG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FSH_POG>-MANDT = 1.
<FSH_POG>-AUFNR = 1.
<FSH_POG>-POSNR = 1.
<FSH_POG>-ETENR = 1.
<FSH_POG>-BDART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FSH_POG-EBELN, sy-vline,
  WA_FSH_POG-EBELP, sy-vline,
  WA_FSH_POG-ETENR_PO, sy-vline,
  WA_FSH_POG-MATNR, sy-vline,
  WA_FSH_POG-PQTY, sy-vline,
  WA_FSH_POG-PMEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FSH_POG 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_FSH_POG 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_FSH_POG INTO WA_FSH_POG.


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

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

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

*Conversion exit CUNIT, internal->external for field PMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FSH_POG-PMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_POG-PMEINS.
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_FSH_POG_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
BDART TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ETENR_PO TYPE STRING,
MATNR TYPE STRING,
PQTY TYPE STRING,
PMEINS TYPE STRING,
RQTY TYPE STRING,
GTYPE TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
PDATU TYPE STRING,
INVALID TYPE STRING,
EDATU_D TYPE STRING,
RNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FSH_POG_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_FSH_POG_STR-MANDT sy-vline 
WA_FSH_POG_STR-AUFNR sy-vline 
WA_FSH_POG_STR-POSNR sy-vline 
WA_FSH_POG_STR-ETENR sy-vline 
WA_FSH_POG_STR-BDART sy-vline 
WA_FSH_POG_STR-EBELN sy-vline 
WA_FSH_POG_STR-EBELP sy-vline 
WA_FSH_POG_STR-ETENR_PO sy-vline 
WA_FSH_POG_STR-MATNR sy-vline 
WA_FSH_POG_STR-PQTY sy-vline 
WA_FSH_POG_STR-PMEINS sy-vline 
WA_FSH_POG_STR-RQTY sy-vline 
WA_FSH_POG_STR-GTYPE sy-vline 
WA_FSH_POG_STR-ERDAT sy-vline 
WA_FSH_POG_STR-ERNAM sy-vline 
WA_FSH_POG_STR-PDATU sy-vline 
WA_FSH_POG_STR-INVALID sy-vline 
WA_FSH_POG_STR-EDATU_D sy-vline 
WA_FSH_POG_STR-RNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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