ABAP Select data from SAP table FSH_PO_OVERVIEW_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FSH_PO_OVERVIEW_ITEM 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_PO_OVERVIEW_ITEM. 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_PO_OVERVIEW_ITEM 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_PO_OVERVIEW_ITEM TYPE STANDARD TABLE OF FSH_PO_OVERVIEW_ITEM,
      WA_FSH_PO_OVERVIEW_ITEM TYPE FSH_PO_OVERVIEW_ITEM,
      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_PO_OVERVIEW_ITEM> TYPE FSH_PO_OVERVIEW_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FSH_PO_OVERVIEW_ITEM
*  INTO TABLE @DATA(IT_FSH_PO_OVERVIEW_ITEM2).
*--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_PO_OVERVIEW_ITEM INDEX 1 INTO DATA(WA_FSH_PO_OVERVIEW_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FSH_PO_OVERVIEW_ITEM>-EBELN = 1.
<FSH_PO_OVERVIEW_ITEM>-EBELP = 1.
<FSH_PO_OVERVIEW_ITEM>-PSTYP = 1.
<FSH_PO_OVERVIEW_ITEM>-KNTTP = 1.
<FSH_PO_OVERVIEW_ITEM>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FSH_PO_OVERVIEW_ITEM-WERKS, sy-vline,
  WA_FSH_PO_OVERVIEW_ITEM-LGORT, sy-vline,
  WA_FSH_PO_OVERVIEW_ITEM-BEDNR, sy-vline,
  WA_FSH_PO_OVERVIEW_ITEM-MATKL, sy-vline,
  WA_FSH_PO_OVERVIEW_ITEM-EVERS, sy-vline,
  WA_FSH_PO_OVERVIEW_ITEM-BANFN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FSH_PO_OVERVIEW_ITEM 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_PO_OVERVIEW_ITEM 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_PO_OVERVIEW_ITEM INTO WA_FSH_PO_OVERVIEW_ITEM.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FSH_PO_OVERVIEW_ITEM-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_PO_OVERVIEW_ITEM-VBELN.
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_PO_OVERVIEW_ITEM_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
BEDNR TYPE STRING,
MATKL TYPE STRING,
EVERS TYPE STRING,
BANFN TYPE STRING,
SGT_SCAT TYPE STRING,
WRF_CHARSTC1 TYPE STRING,
WRF_CHARSTC2 TYPE STRING,
WRF_CHARSTC3 TYPE STRING,
FSH_VAS_REL TYPE STRING,
FSH_SEASON_YEAR TYPE STRING,
FSH_SEASON TYPE STRING,
FSH_COLLECTION TYPE STRING,
FSH_THEME TYPE STRING,
RFM_DIVERSION TYPE STRING,
RFM_REF_DOC TYPE STRING,
RFM_REF_ITEM TYPE STRING,
RFM_REF_ACTION TYPE STRING,
MAKTX TYPE STRING,
EINDT TYPE STRING,
FSH_SMENGE TYPE STRING,
WEMNG TYPE STRING,
OBMNG TYPE STRING,
EBTYP TYPE STRING,
FSH_VMENGE TYPE STRING,
FSH_VBELN_DEL TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FSH_PO_OVERVIEW_ITEM_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_PO_OVERVIEW_ITEM_STR-EBELN sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-EBELP sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-PSTYP sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-KNTTP sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-MATNR sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-WERKS sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-LGORT sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-BEDNR sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-MATKL sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-EVERS sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-BANFN sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-SGT_SCAT sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-WRF_CHARSTC1 sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-WRF_CHARSTC2 sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-WRF_CHARSTC3 sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_VAS_REL sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_SEASON_YEAR sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_SEASON sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_COLLECTION sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_THEME sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-RFM_DIVERSION sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-RFM_REF_DOC sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-RFM_REF_ITEM sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-RFM_REF_ACTION sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-MAKTX sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-EINDT sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_SMENGE sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-WEMNG sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-OBMNG sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-EBTYP sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_VMENGE sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-FSH_VBELN_DEL sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-VBELN sy-vline 
WA_FSH_PO_OVERVIEW_ITEM_STR-VBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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