ABAP Select data from SAP table MMSUPLRLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMSUPLRLIST
*  INTO TABLE @DATA(IT_MMSUPLRLIST2).
*--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_MMSUPLRLIST INDEX 1 INTO DATA(WA_MMSUPLRLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMSUPLRLIST>-MANDT = 1.
<MMSUPLRLIST>-SUPPLIERLISTUUID = 1.
<MMSUPLRLIST>-SUPPLIERLIST = 1.
<MMSUPLRLIST>-SUPPLIERLISTVERSION = 1.
<MMSUPLRLIST>-SUPPLIERLISTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMSUPLRLIST-SUPPLIERLISTNAME, sy-vline,
  WA_MMSUPLRLIST-SUPLRLISTLIFECYCLESTATUS, sy-vline,
  WA_MMSUPLRLIST-PURCHASERRESPONSIBLE, sy-vline,
  WA_MMSUPLRLIST-PURCHASERRESPWORKAGREEMENT, sy-vline,
  WA_MMSUPLRLIST-SUPPLIERLISTISLATEST, sy-vline,
  WA_MMSUPLRLIST-SUPPLIERLISTISPUBLIC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMSUPLRLIST 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_MMSUPLRLIST 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_MMSUPLRLIST INTO WA_MMSUPLRLIST.


*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 SUPPLIERLIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMSUPLRLIST-SUPPLIERLIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSUPLRLIST-SUPPLIERLIST.
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_MMSUPLRLIST_STR, 
MANDT TYPE STRING,
SUPPLIERLISTUUID TYPE STRING,
SUPPLIERLIST TYPE STRING,
SUPPLIERLISTVERSION TYPE STRING,
SUPPLIERLISTTYPE TYPE STRING,
SUPPLIERLISTNAME TYPE STRING,
SUPLRLISTLIFECYCLESTATUS TYPE STRING,
PURCHASERRESPONSIBLE TYPE STRING,
PURCHASERRESPWORKAGREEMENT TYPE STRING,
SUPPLIERLISTISLATEST TYPE STRING,
SUPPLIERLISTISPUBLIC TYPE STRING,
SUPPLIERLISTHASALLCOMPANYCODES TYPE STRING,
MATERIALGROUP TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PURCHASERRESPONSIBLEUSER TYPE STRING,
ISDELETED TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
DUMMY_SUPLRLISTHDR_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMSUPLRLIST_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_MMSUPLRLIST_STR-MANDT sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTUUID sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLIST sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTVERSION sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTTYPE sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTNAME sy-vline 
WA_MMSUPLRLIST_STR-SUPLRLISTLIFECYCLESTATUS sy-vline 
WA_MMSUPLRLIST_STR-PURCHASERRESPONSIBLE sy-vline 
WA_MMSUPLRLIST_STR-PURCHASERRESPWORKAGREEMENT sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTISLATEST sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTISPUBLIC sy-vline 
WA_MMSUPLRLIST_STR-SUPPLIERLISTHASALLCOMPANYCODES sy-vline 
WA_MMSUPLRLIST_STR-MATERIALGROUP sy-vline 
WA_MMSUPLRLIST_STR-CREATEDBYUSER sy-vline 
WA_MMSUPLRLIST_STR-CREATIONDATETIME sy-vline 
WA_MMSUPLRLIST_STR-LASTCHANGEDBYUSER sy-vline 
WA_MMSUPLRLIST_STR-LASTCHANGEDATETIME sy-vline 
WA_MMSUPLRLIST_STR-PURCHASERRESPONSIBLEUSER sy-vline 
WA_MMSUPLRLIST_STR-ISDELETED sy-vline 
WA_MMSUPLRLIST_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_MMSUPLRLIST_STR-DUMMY_SUPLRLISTHDR_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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