ABAP Select data from SAP table ICRVMLSUPF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRVMLSUPF
*  INTO TABLE @DATA(IT_ICRVMLSUPF2).
*--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_ICRVMLSUPF INDEX 1 INTO DATA(WA_ICRVMLSUPF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRVMLSUPF>-MANDT = 1.
<ICRVMLSUPF>-CMPLRQVERSSUBSTLISTCNCTNTDNAME = 1.
<ICRVMLSUPF>-MATERIAL = 1.
<ICRVMLSUPF>-CHMLCOMPOSITIONTYPE = 1.
<ICRVMLSUPF>-BUSINESSPARTNERSUPPLIER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRVMLSUPF-CHMLCMPLNCINFOUUID, sy-vline,
  WA_ICRVMLSUPF-CHMLSUPLRMATLNAVGNLINK, sy-vline,
  WA_ICRVMLSUPF-SUBSTANCEUUID, sy-vline,
  WA_ICRVMLSUPF-SUBSTANCEVARASSGMTUUID, sy-vline,
  WA_ICRVMLSUPF-SUBSTANCELISTITMUUID, sy-vline,
  WA_ICRVMLSUPF-LISTEDSUBSTANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRVMLSUPF 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_ICRVMLSUPF 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_ICRVMLSUPF INTO WA_ICRVMLSUPF.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSUPF-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSUPF-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit SXIDN, internal->external for field EMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSUPF-EMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSUPF-EMAILADDRESS.
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_ICRVMLSUPF_STR, 
MANDT TYPE STRING,
CMPLRQVERSSUBSTLISTCNCTNTDNAME TYPE STRING,
MATERIAL TYPE STRING,
CHMLCOMPOSITIONTYPE TYPE STRING,
BUSINESSPARTNERSUPPLIER TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CHMLSUPLRMATLNAVGNLINK TYPE STRING,
SUBSTANCEUUID TYPE STRING,
SUBSTANCEVARASSGMTUUID TYPE STRING,
SUBSTANCELISTITMUUID TYPE STRING,
LISTEDSUBSTANCE TYPE STRING,
COMPANYSUBSTANCENAME TYPE STRING,
PRODUCTGROUP TYPE STRING,
CASNUMBER TYPE STRING,
ECNUMBER TYPE STRING,
PHONENUMBER TYPE STRING,
EMAILADDRESS TYPE STRING,
COUNTRY TYPE STRING,
CHMLSUPLRMATLNAME TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRVMLSUPF_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_ICRVMLSUPF_STR-MANDT sy-vline 
WA_ICRVMLSUPF_STR-CMPLRQVERSSUBSTLISTCNCTNTDNAME sy-vline 
WA_ICRVMLSUPF_STR-MATERIAL sy-vline 
WA_ICRVMLSUPF_STR-CHMLCOMPOSITIONTYPE sy-vline 
WA_ICRVMLSUPF_STR-BUSINESSPARTNERSUPPLIER sy-vline 
WA_ICRVMLSUPF_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_ICRVMLSUPF_STR-CHMLSUPLRMATLNAVGNLINK sy-vline 
WA_ICRVMLSUPF_STR-SUBSTANCEUUID sy-vline 
WA_ICRVMLSUPF_STR-SUBSTANCEVARASSGMTUUID sy-vline 
WA_ICRVMLSUPF_STR-SUBSTANCELISTITMUUID sy-vline 
WA_ICRVMLSUPF_STR-LISTEDSUBSTANCE sy-vline 
WA_ICRVMLSUPF_STR-COMPANYSUBSTANCENAME sy-vline 
WA_ICRVMLSUPF_STR-PRODUCTGROUP sy-vline 
WA_ICRVMLSUPF_STR-CASNUMBER sy-vline 
WA_ICRVMLSUPF_STR-ECNUMBER sy-vline 
WA_ICRVMLSUPF_STR-PHONENUMBER sy-vline 
WA_ICRVMLSUPF_STR-EMAILADDRESS sy-vline 
WA_ICRVMLSUPF_STR-COUNTRY sy-vline 
WA_ICRVMLSUPF_STR-CHMLSUPLRMATLNAME sy-vline 
WA_ICRVMLSUPF_STR-SUPPLIERMATERIALNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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