ABAP Select data from SAP table ISTLUNITAMOUNTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISTLUNITAMOUNTS
*  INTO TABLE @DATA(IT_ISTLUNITAMOUNTS2).
*--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_ISTLUNITAMOUNTS INDEX 1 INTO DATA(WA_ISTLUNITAMOUNTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISTLUNITAMOUNTS>-MANDT = 1.
<ISTLUNITAMOUNTS>-ACMSETTLEMENTUNITAMOUNTUUID = 1.
<ISTLUNITAMOUNTS>-SETTLEMENTDOCHEADERUUID = 1.
<ISTLUNITAMOUNTS>-ACMSETTLEMENTUNITAMOUNTTYPE = 1.
<ISTLUNITAMOUNTS>-ACMSETTLEMENTUNITAMTTYPEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISTLUNITAMOUNTS-ACMSETTLEMENTUNITAMOUNT, sy-vline,
  WA_ISTLUNITAMOUNTS-ACMSETTLMTUNITAMOUNTCRCY, sy-vline,
  WA_ISTLUNITAMOUNTS-ACMSETTLMTWTHTHLDPOSTEDAMT, sy-vline,
  WA_ISTLUNITAMOUNTS-ACMSETTLMTPOSTEDAMTWTHTHLDCRCY, sy-vline,
  WA_ISTLUNITAMOUNTS-ACMSETTLMTAMTWTHOUTTHLDCRCY, sy-vline,
  WA_ISTLUNITAMOUNTS-ACMSETTLMTWTHOUTTHLDPOSTEDAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISTLUNITAMOUNTS 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_ISTLUNITAMOUNTS 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_ISTLUNITAMOUNTS INTO WA_ISTLUNITAMOUNTS.


*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 ATINN, internal->external for field DISCPREMQTYCHARCSUUID
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-DISCPREMQTYCHARCSUUID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-DISCPREMQTYCHARCSUUID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field ACMSETTLMTUNITAMTORIGINALFXVAL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-ACMSETTLMTUNITAMTORIGINALFXVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-ACMSETTLMTUNITAMTORIGINALFXVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field ACMSETTLMTAMTNEGOTIATEDFXVAL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-ACMSETTLMTAMTNEGOTIATEDFXVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-ACMSETTLMTAMTNEGOTIATEDFXVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field ACMSETTLMTUNITINTMDFXVAL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-ACMSETTLMTUNITINTMDFXVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-ACMSETTLMTUNITINTMDFXVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field ACMSETTLEMENTGROUPFXVAL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-ACMSETTLEMENTGROUPFXVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-ACMSETTLEMENTGROUPFXVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field ACMSETTLMTGRPINTERMEDIATEFXVAL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISTLUNITAMOUNTS-ACMSETTLMTGRPINTERMEDIATEFXVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTLUNITAMOUNTS-ACMSETTLMTGRPINTERMEDIATEFXVAL.
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_ISTLUNITAMOUNTS_STR, 
MANDT TYPE STRING,
ACMSETTLEMENTUNITAMOUNTUUID TYPE STRING,
SETTLEMENTDOCHEADERUUID TYPE STRING,
ACMSETTLEMENTUNITAMOUNTTYPE TYPE STRING,
ACMSETTLEMENTUNITAMTTYPEUUID TYPE STRING,
ACMSETTLEMENTUNITAMOUNT TYPE STRING,
ACMSETTLMTUNITAMOUNTCRCY TYPE STRING,
ACMSETTLMTWTHTHLDPOSTEDAMT TYPE STRING,
ACMSETTLMTPOSTEDAMTWTHTHLDCRCY TYPE STRING,
ACMSETTLMTAMTWTHOUTTHLDCRCY TYPE STRING,
ACMSETTLMTWTHOUTTHLDPOSTEDAMT TYPE STRING,
ACMPRICINGCONDITIONTYPE TYPE STRING,
DISCPREMQTYCHARCSUUID TYPE STRING,
ACMSETTLEMENTUNITBASEVALAMT TYPE STRING,
ACMSETTLMTUNITAMTBASEVALUECRCY TYPE STRING,
ACMSETTLMTUNITAMTORIGINALFXVAL TYPE STRING,
ACMSETTLMTAMTNEGOTIATEDFXVAL TYPE STRING,
ACMSETTLMTUNITFXNEGOTIATIONSTS TYPE STRING,
ACMSETTLMTUNITINTMDFXVAL TYPE STRING,
ACMSETTLEMENTGROUPFXVAL TYPE STRING,
ACMSETTLMTGRPFXNEGOTIATIONSTS TYPE STRING,
ACMSETTLMTGRPINTERMEDIATEFXVAL TYPE STRING,
ACMSETTLMTUNITAMTBASERAWVAL TYPE STRING,
ACMSETTLMTUNITAMTISACCRUALAMT TYPE STRING,
ACMSETTLMTUNITSTORAGEREFUUID TYPE STRING,
ACMSETTLEMENTUNITAMTTYPENAME TYPE STRING,
ACMSETTLMTINVOICINGAMOUNTCRCY TYPE STRING,
ACMSETTLEMENTINVOICINGAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISTLUNITAMOUNTS_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_ISTLUNITAMOUNTS_STR-MANDT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITAMOUNTUUID sy-vline 
WA_ISTLUNITAMOUNTS_STR-SETTLEMENTDOCHEADERUUID sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITAMOUNTTYPE sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITAMTTYPEUUID sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITAMOUNT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITAMOUNTCRCY sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTWTHTHLDPOSTEDAMT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTPOSTEDAMTWTHTHLDCRCY sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTAMTWTHOUTTHLDCRCY sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTWTHOUTTHLDPOSTEDAMT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMPRICINGCONDITIONTYPE sy-vline 
WA_ISTLUNITAMOUNTS_STR-DISCPREMQTYCHARCSUUID sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITBASEVALAMT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITAMTBASEVALUECRCY sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITAMTORIGINALFXVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTAMTNEGOTIATEDFXVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITFXNEGOTIATIONSTS sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITINTMDFXVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTGROUPFXVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTGRPFXNEGOTIATIONSTS sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTGRPINTERMEDIATEFXVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITAMTBASERAWVAL sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITAMTISACCRUALAMT sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTUNITSTORAGEREFUUID sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTUNITAMTTYPENAME sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLMTINVOICINGAMOUNTCRCY sy-vline 
WA_ISTLUNITAMOUNTS_STR-ACMSETTLEMENTINVOICINGAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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