ABAP Select data from SAP table ISTLGRPFEE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISTLGRPFEE
*  INTO TABLE @DATA(IT_ISTLGRPFEE2).
*--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_ISTLGRPFEE INDEX 1 INTO DATA(WA_ISTLGRPFEE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISTLGRPFEE>-MANDT = 1.
<ISTLGRPFEE>-FEEDOCUMENTLEVEL = 1.
<ISTLGRPFEE>-ACMFEEREFERENCEDOCUMENTID = 1.
<ISTLGRPFEE>-ACMFEEREFERENCEDOCUMENTITEM = 1.
<ISTLGRPFEE>-ACMFEEREFERENCEDOCUMENTSUBITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISTLGRPFEE-REFDOCUMENTYEAR, sy-vline,
  WA_ISTLGRPFEE-FEESEQUENCENUMBER, sy-vline,
  WA_ISTLGRPFEE-FEEFRAMEWORKFEEID, sy-vline,
  WA_ISTLGRPFEE-FEEVERSION, sy-vline,
  WA_ISTLGRPFEE-FEEFRAMEWORKFEENAME, sy-vline,
  WA_ISTLGRPFEE-FEEFRAMEWORKFEERATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISTLGRPFEE 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_ISTLGRPFEE 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_ISTLGRPFEE INTO WA_ISTLGRPFEE.


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

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

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

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

*Conversion exit GJAHR, internal->external for field REFDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ISTLGRPFEE-REFDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLGRPFEE-REFDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLGRPFEE-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLGRPFEE-UNITOFMEASURE.
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_ISTLGRPFEE_STR, 
MANDT TYPE STRING,
FEEDOCUMENTLEVEL TYPE STRING,
ACMFEEREFERENCEDOCUMENTID TYPE STRING,
ACMFEEREFERENCEDOCUMENTITEM TYPE STRING,
ACMFEEREFERENCEDOCUMENTSUBITEM TYPE STRING,
REFDOCUMENTYEAR TYPE STRING,
FEESEQUENCENUMBER TYPE STRING,
FEEFRAMEWORKFEEID TYPE STRING,
FEEVERSION TYPE STRING,
FEEFRAMEWORKFEENAME TYPE STRING,
FEEFRAMEWORKFEERATE TYPE STRING,
ACMFEECURRENCY TYPE STRING,
PRICEUNITQTY TYPE STRING,
UNITOFMEASURE TYPE STRING,
FEEALLOCATIONMODE TYPE STRING,
FEEALLOCATIONMODENAME TYPE STRING,
ACMFEEISOBSOLETE TYPE STRING,
ACMASSIGNEDFEEDECIMALPLACES TYPE STRING,
ACMFEEVALIDSTATUS TYPE STRING,
ACMFEEVALIDSTATUSNAME TYPE STRING,
FEEDOCUMENTLEVELNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISTLGRPFEE_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_ISTLGRPFEE_STR-MANDT sy-vline 
WA_ISTLGRPFEE_STR-FEEDOCUMENTLEVEL sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEREFERENCEDOCUMENTID sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEREFERENCEDOCUMENTITEM sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEREFERENCEDOCUMENTSUBITEM sy-vline 
WA_ISTLGRPFEE_STR-REFDOCUMENTYEAR sy-vline 
WA_ISTLGRPFEE_STR-FEESEQUENCENUMBER sy-vline 
WA_ISTLGRPFEE_STR-FEEFRAMEWORKFEEID sy-vline 
WA_ISTLGRPFEE_STR-FEEVERSION sy-vline 
WA_ISTLGRPFEE_STR-FEEFRAMEWORKFEENAME sy-vline 
WA_ISTLGRPFEE_STR-FEEFRAMEWORKFEERATE sy-vline 
WA_ISTLGRPFEE_STR-ACMFEECURRENCY sy-vline 
WA_ISTLGRPFEE_STR-PRICEUNITQTY sy-vline 
WA_ISTLGRPFEE_STR-UNITOFMEASURE sy-vline 
WA_ISTLGRPFEE_STR-FEEALLOCATIONMODE sy-vline 
WA_ISTLGRPFEE_STR-FEEALLOCATIONMODENAME sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEISOBSOLETE sy-vline 
WA_ISTLGRPFEE_STR-ACMASSIGNEDFEEDECIMALPLACES sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEVALIDSTATUS sy-vline 
WA_ISTLGRPFEE_STR-ACMFEEVALIDSTATUSNAME sy-vline 
WA_ISTLGRPFEE_STR-FEEDOCUMENTLEVELNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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