ABAP Select data from SAP table /ISDFPS/ST_REL_LFB_FOD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/ST_REL_LFB_FOD 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 /ISDFPS/ST_REL_LFB_FOD. 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 /ISDFPS/ST_REL_LFB_FOD 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_/ISDFPS/ST_REL_LFB_FOD TYPE STANDARD TABLE OF /ISDFPS/ST_REL_LFB_FOD,
      WA_/ISDFPS/ST_REL_LFB_FOD TYPE /ISDFPS/ST_REL_LFB_FOD,
      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: </ISDFPS/ST_REL_LFB_FOD> TYPE /ISDFPS/ST_REL_LFB_FOD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ST_REL_LFB_FOD
  INTO TABLE IT_/ISDFPS/ST_REL_LFB_FOD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ST_REL_LFB_FOD
*  INTO TABLE @DATA(IT_/ISDFPS/ST_REL_LFB_FOD2).
*--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_/ISDFPS/ST_REL_LFB_FOD INDEX 1 INTO DATA(WA_/ISDFPS/ST_REL_LFB_FOD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ST_REL_LFB_FOD ASSIGNING </ISDFPS/ST_REL_LFB_FOD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ST_REL_LFB_FOD>-OBJID = 1.
</ISDFPS/ST_REL_LFB_FOD>-RELOC_ID = 1.
</ISDFPS/ST_REL_LFB_FOD>-RELOC_SEQ_ID = 1.
</ISDFPS/ST_REL_LFB_FOD>-MATNR = 1.
</ISDFPS/ST_REL_LFB_FOD>-EBELN = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ST_REL_LFB_FOD INTO WA_/ISDFPS/ST_REL_LFB_FOD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ST_REL_LFB_FOD-EBELP, sy-vline,
  WA_/ISDFPS/ST_REL_LFB_FOD-VBELN, sy-vline,
  WA_/ISDFPS/ST_REL_LFB_FOD-POSNR, sy-vline,
  WA_/ISDFPS/ST_REL_LFB_FOD-VBELN_INB, sy-vline,
  WA_/ISDFPS/ST_REL_LFB_FOD-POSNR_INB, sy-vline,
  WA_/ISDFPS/ST_REL_LFB_FOD-QUPLN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ST_REL_LFB_FOD 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_/ISDFPS/ST_REL_LFB_FOD 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_/ISDFPS/ST_REL_LFB_FOD INTO WA_/ISDFPS/ST_REL_LFB_FOD.


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

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

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

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

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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ST_REL_LFB_FOD-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ST_REL_LFB_FOD-SERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ST_REL_LFB_FOD-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ST_REL_LFB_FOD-EQUNR.
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_/ISDFPS/ST_REL_LFB_FOD_STR, 
OBJID TYPE STRING,
RELOC_ID TYPE STRING,
RELOC_SEQ_ID TYPE STRING,
MATNR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
VBELN_INB TYPE STRING,
POSNR_INB TYPE STRING,
QUPLN TYPE STRING,
BSTMG TYPE STRING,
LFIMG TYPE STRING,
WAMNG TYPE STRING,
WEMNG TYPE STRING,
MEINS TYPE STRING,
FORCE_ID TYPE STRING,
FORCE_CNT TYPE STRING,
STEXT TYPE STRING,
RELOC_DESC TYPE STRING,
RELOC_SEQ_DESC TYPE STRING,
LFDAT_CRD TYPE STRING,
LFDAT_PO TYPE STRING,
LFDAT_DEL TYPE STRING,
SERNR TYPE STRING,
BATCH TYPE STRING,
EQUNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/ST_REL_LFB_FOD_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_/ISDFPS/ST_REL_LFB_FOD_STR-OBJID sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-RELOC_ID sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-RELOC_SEQ_ID sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-MATNR sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-EBELN sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-EBELP sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-VBELN sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-POSNR sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-VBELN_INB sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-POSNR_INB sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-QUPLN sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-BSTMG sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-LFIMG sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-WAMNG sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-WEMNG sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-MEINS sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-FORCE_ID sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-FORCE_CNT sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-STEXT sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-RELOC_DESC sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-RELOC_SEQ_DESC sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-LFDAT_CRD sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-LFDAT_PO sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-LFDAT_DEL sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-SERNR sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-BATCH sy-vline 
WA_/ISDFPS/ST_REL_LFB_FOD_STR-EQUNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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