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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/BELEGE_TREE_DATA
*  INTO TABLE @DATA(IT_/ISDFPS/BELEGE_TREE_DATA2).
*--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/BELEGE_TREE_DATA INDEX 1 INTO DATA(WA_/ISDFPS/BELEGE_TREE_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/BELEGE_TREE_DATA>-MANDT = 1.
</ISDFPS/BELEGE_TREE_DATA>-BANFN = 1.
</ISDFPS/BELEGE_TREE_DATA>-BNFPO = 1.
</ISDFPS/BELEGE_TREE_DATA>-BSART = 1.
</ISDFPS/BELEGE_TREE_DATA>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/BELEGE_TREE_DATA-MENGE, sy-vline,
  WA_/ISDFPS/BELEGE_TREE_DATA-MEINS, sy-vline,
  WA_/ISDFPS/BELEGE_TREE_DATA-PACK_MAT, sy-vline,
  WA_/ISDFPS/BELEGE_TREE_DATA-HU_EXID, sy-vline,
  WA_/ISDFPS/BELEGE_TREE_DATA-PSTYP, sy-vline,
  WA_/ISDFPS/BELEGE_TREE_DATA-LOEKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/BELEGE_TREE_DATA 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/BELEGE_TREE_DATA 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/BELEGE_TREE_DATA INTO WA_/ISDFPS/BELEGE_TREE_DATA.


*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 BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/BELEGE_TREE_DATA-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/BELEGE_TREE_DATA-BANFN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LBLNI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/BELEGE_TREE_DATA-LBLNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/BELEGE_TREE_DATA-LBLNI.
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/BELEGE_TREE_DATA_STR, 
MANDT TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
BSART TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
PACK_MAT TYPE STRING,
HU_EXID TYPE STRING,
PSTYP TYPE STRING,
LOEKZ TYPE STRING,
EBAKZ TYPE STRING,
STATU TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
RESWK TYPE STRING,
RESLO TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
DISPO TYPE STRING,
BERID TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
VBTYP TYPE STRING,
ADVCODE TYPE STRING,
STACODE TYPE STRING,
PRIO_URG TYPE STRING,
PRIO_REQ TYPE STRING,
PS_PSP_PNR TYPE STRING,
AFNAM TYPE STRING,
BADAT TYPE STRING,
BANPR TYPE STRING,
BEDAT TYPE STRING,
LFDAT TYPE STRING,
LBLNI TYPE STRING,
FLAG_FORWARDED TYPE STRING,
FLAG_DERIVED TYPE STRING,
FLAG_LOAN TYPE STRING,
FLAG_LOAN_RET TYPE STRING,
FLAG_RETURN_ROOT TYPE STRING,
FLAG_RETURN TYPE STRING,
FLAG_ALONE TYPE STRING,
NODE_POS TYPE STRING,
INCONSISTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/BELEGE_TREE_DATA_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/BELEGE_TREE_DATA_STR-MANDT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BANFN sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BNFPO sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BSART sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-MATNR sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-MENGE sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-MEINS sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-PACK_MAT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-HU_EXID sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-PSTYP sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-LOEKZ sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-EBAKZ sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-STATU sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-WERKS sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-LGORT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-RESWK sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-RESLO sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-ERNAM sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-ERDAT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-DISPO sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BERID sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-EBELN sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-EBELP sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-VBELN sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-POSNR sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-VBTYP sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-ADVCODE sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-STACODE sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-PRIO_URG sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-PRIO_REQ sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-PS_PSP_PNR sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-AFNAM sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BADAT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BANPR sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-BEDAT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-LFDAT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-LBLNI sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_FORWARDED sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_DERIVED sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_LOAN sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_LOAN_RET sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_RETURN_ROOT sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_RETURN sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-FLAG_ALONE sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-NODE_POS sy-vline 
WA_/ISDFPS/BELEGE_TREE_DATA_STR-INCONSISTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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