ABAP Select data from SAP table ISTLUNITFEE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISTLUNITFEE
*  INTO TABLE @DATA(IT_ISTLUNITFEE2).
*--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_ISTLUNITFEE INDEX 1 INTO DATA(WA_ISTLUNITFEE2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISTLUNITFEE-REFDOCUMENTYEAR, sy-vline,
  WA_ISTLUNITFEE-FEESEQUENCENUMBER, sy-vline,
  WA_ISTLUNITFEE-FEEFRAMEWORKFEEID, sy-vline,
  WA_ISTLUNITFEE-FEEVERSION, sy-vline,
  WA_ISTLUNITFEE-FEETYPE, sy-vline,
  WA_ISTLUNITFEE-ACMFEETYPENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISTLUNITFEE 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_ISTLUNITFEE 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_ISTLUNITFEE INTO WA_ISTLUNITFEE.


*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_ISTLUNITFEE-FEEDOCUMENTLEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITFEE-FEEDOCUMENTLEVEL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ACMFEEFRAMEWORKREFDOCSQNCNMBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITFEE-ACMFEEFRAMEWORKREFDOCSQNCNMBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITFEE-ACMFEEFRAMEWORKREFDOCSQNCNMBR.
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_ISTLUNITFEE_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,
FEETYPE TYPE STRING,
ACMFEETYPENAME TYPE STRING,
FEEFRAMEWORKFEENAME TYPE STRING,
ACMFEEFRAMEWORKGLSOURCE TYPE STRING,
ACMFEEFRAMEWORKGLSOURCENAME TYPE STRING,
ACTIVEGLACCOUNT TYPE STRING,
FEEFRAMEWORKFEERATE TYPE STRING,
ACMFEECURRENCY TYPE STRING,
PRICEUNITQTY TYPE STRING,
UNITOFMEASURE TYPE STRING,
ACMFEEFRAMEWORKDOCTYPEREF TYPE STRING,
ACMFEEFRAMEWORKREFDOCID TYPE STRING,
ACMFEEFRAMEWORKREFDOCUMENTITEM TYPE STRING,
ACMFEEFRAMEWORKREFDOCSUBITEM TYPE STRING,
ACMFEEFRAMEWORKREFDOCYEAR TYPE STRING,
ACMFEEFRAMEWORKREFDOCSQNCNMBR TYPE STRING,
FEEALLOCATIONMODE TYPE STRING,
FEEALLOCATIONMODENAME TYPE STRING,
ACMFEEISOBSOLETE TYPE STRING,
ACMASSIGNEDFEEDECIMALPLACES TYPE STRING,
ACMFEEVALIDSTATUS TYPE STRING,
ACMFEEVALIDSTATUSNAME TYPE STRING,
FEEDOCUMENTLEVELNAME TYPE STRING,
ACMSETTLMTAMTTYPEUUID TYPE STRING,
ACMFEEFRAMEWORKFEEAMOUNT TYPE STRING,
ACMFEEFRAMEWORKFEECURRENCY TYPE STRING,
ACMFEEFRAMEWORKFXRATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISTLUNITFEE_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_ISTLUNITFEE_STR-MANDT sy-vline 
WA_ISTLUNITFEE_STR-FEEDOCUMENTLEVEL sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEREFERENCEDOCUMENTID sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEREFERENCEDOCUMENTITEM sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEREFERENCEDOCUMENTSUBITEM sy-vline 
WA_ISTLUNITFEE_STR-REFDOCUMENTYEAR sy-vline 
WA_ISTLUNITFEE_STR-FEESEQUENCENUMBER sy-vline 
WA_ISTLUNITFEE_STR-FEEFRAMEWORKFEEID sy-vline 
WA_ISTLUNITFEE_STR-FEEVERSION sy-vline 
WA_ISTLUNITFEE_STR-FEETYPE sy-vline 
WA_ISTLUNITFEE_STR-ACMFEETYPENAME sy-vline 
WA_ISTLUNITFEE_STR-FEEFRAMEWORKFEENAME sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKGLSOURCE sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKGLSOURCENAME sy-vline 
WA_ISTLUNITFEE_STR-ACTIVEGLACCOUNT sy-vline 
WA_ISTLUNITFEE_STR-FEEFRAMEWORKFEERATE sy-vline 
WA_ISTLUNITFEE_STR-ACMFEECURRENCY sy-vline 
WA_ISTLUNITFEE_STR-PRICEUNITQTY sy-vline 
WA_ISTLUNITFEE_STR-UNITOFMEASURE sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKDOCTYPEREF sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKREFDOCID sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKREFDOCUMENTITEM sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKREFDOCSUBITEM sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKREFDOCYEAR sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKREFDOCSQNCNMBR sy-vline 
WA_ISTLUNITFEE_STR-FEEALLOCATIONMODE sy-vline 
WA_ISTLUNITFEE_STR-FEEALLOCATIONMODENAME sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEISOBSOLETE sy-vline 
WA_ISTLUNITFEE_STR-ACMASSIGNEDFEEDECIMALPLACES sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEVALIDSTATUS sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEVALIDSTATUSNAME sy-vline 
WA_ISTLUNITFEE_STR-FEEDOCUMENTLEVELNAME sy-vline 
WA_ISTLUNITFEE_STR-ACMSETTLMTAMTTYPEUUID sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKFEEAMOUNT sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKFEECURRENCY sy-vline 
WA_ISTLUNITFEE_STR-ACMFEEFRAMEWORKFXRATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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