ABAP Select data from SAP table ILISULSTDSUB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ILISULSTDSUB
*  INTO TABLE @DATA(IT_ILISULSTDSUB2).
*--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_ILISULSTDSUB INDEX 1 INTO DATA(WA_ILISULSTDSUB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ILISULSTDSUB>-MANDT = 1.
<ILISULSTDSUB>-SUBSTANCEUUID = 1.
<ILISULSTDSUB>-ACTIVESUBSTANCEUUID = 1.
<ILISULSTDSUB>-LISTEDSUBSTANCEUUID = 1.
<ILISULSTDSUB>-RESPONSIBLEUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ILISULSTDSUB-CUSTLISTEDSUBSTANCEDFLTNAME, sy-vline,
  WA_ILISULSTDSUB-CNTNTLISTEDSUBSTANCEDFLTNAME, sy-vline,
  WA_ILISULSTDSUB-LISTEDSUBSTANCEDEFAULTNAME, sy-vline,
  WA_ILISULSTDSUB-CUSTLISTEDSUBSTANCE, sy-vline,
  WA_ILISULSTDSUB-CNTNTLISTEDSUBSTANCE, sy-vline,
  WA_ILISULSTDSUB-LISTEDSUBSTANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ILISULSTDSUB 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_ILISULSTDSUB 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_ILISULSTDSUB INTO WA_ILISULSTDSUB.


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

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

*Conversion exit ALPHA, internal->external for field LISTEDSUBSTANCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ILISULSTDSUB-LISTEDSUBSTANCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ILISULSTDSUB-LISTEDSUBSTANCE.
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_ILISULSTDSUB_STR, 
MANDT TYPE STRING,
SUBSTANCEUUID TYPE STRING,
ACTIVESUBSTANCEUUID TYPE STRING,
LISTEDSUBSTANCEUUID TYPE STRING,
RESPONSIBLEUNIT TYPE STRING,
CUSTLISTEDSUBSTANCEDFLTNAME TYPE STRING,
CNTNTLISTEDSUBSTANCEDFLTNAME TYPE STRING,
LISTEDSUBSTANCEDEFAULTNAME TYPE STRING,
CUSTLISTEDSUBSTANCE TYPE STRING,
CNTNTLISTEDSUBSTANCE TYPE STRING,
LISTEDSUBSTANCE TYPE STRING,
CUSTCASNUMBER TYPE STRING,
CNTNTCASNUMBER TYPE STRING,
CASNUMBER TYPE STRING,
CUSTECNUMBER TYPE STRING,
CNTNTECNUMBER TYPE STRING,
ECNUMBER TYPE STRING,
CUSTMOLECULARFORMULA TYPE STRING,
CNTNTMOLECULARFORMULA TYPE STRING,
MOLECULARFORMULA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ILISULSTDSUB_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_ILISULSTDSUB_STR-MANDT sy-vline 
WA_ILISULSTDSUB_STR-SUBSTANCEUUID sy-vline 
WA_ILISULSTDSUB_STR-ACTIVESUBSTANCEUUID sy-vline 
WA_ILISULSTDSUB_STR-LISTEDSUBSTANCEUUID sy-vline 
WA_ILISULSTDSUB_STR-RESPONSIBLEUNIT sy-vline 
WA_ILISULSTDSUB_STR-CUSTLISTEDSUBSTANCEDFLTNAME sy-vline 
WA_ILISULSTDSUB_STR-CNTNTLISTEDSUBSTANCEDFLTNAME sy-vline 
WA_ILISULSTDSUB_STR-LISTEDSUBSTANCEDEFAULTNAME sy-vline 
WA_ILISULSTDSUB_STR-CUSTLISTEDSUBSTANCE sy-vline 
WA_ILISULSTDSUB_STR-CNTNTLISTEDSUBSTANCE sy-vline 
WA_ILISULSTDSUB_STR-LISTEDSUBSTANCE sy-vline 
WA_ILISULSTDSUB_STR-CUSTCASNUMBER sy-vline 
WA_ILISULSTDSUB_STR-CNTNTCASNUMBER sy-vline 
WA_ILISULSTDSUB_STR-CASNUMBER sy-vline 
WA_ILISULSTDSUB_STR-CUSTECNUMBER sy-vline 
WA_ILISULSTDSUB_STR-CNTNTECNUMBER sy-vline 
WA_ILISULSTDSUB_STR-ECNUMBER sy-vline 
WA_ILISULSTDSUB_STR-CUSTMOLECULARFORMULA sy-vline 
WA_ILISULSTDSUB_STR-CNTNTMOLECULARFORMULA sy-vline 
WA_ILISULSTDSUB_STR-MOLECULARFORMULA sy-vline      INTO ld_text SEPARATED BY SPACE.

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