ABAP Select data from SAP table IPPMGCOMMLREF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPMGCOMMLREF
*  INTO TABLE @DATA(IT_IPPMGCOMMLREF2).
*--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_IPPMGCOMMLREF INDEX 1 INTO DATA(WA_IPPMGCOMMLREF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPMGCOMMLREF>-MANDT = 1.
<IPPMGCOMMLREF>-PREPAYMENTCOMMLREFUUID = 1.
<IPPMGCOMMLREF>-PREPAYMENTAGREEMENTUUID = 1.
<IPPMGCOMMLREF>-PREPAYMENTCOMMLREFTYPE = 1.
<IPPMGCOMMLREF>-PREPAYMENTCOMMERCIALREFERENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFNAME, sy-vline,
  WA_IPPMGCOMMLREF-PREPAYMENTREFCONTACTPERSONNAME, sy-vline,
  WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFCURJOBTITLE, sy-vline,
  WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFSEGMENT, sy-vline,
  WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFINDSTRYFUNC, sy-vline,
  WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFCITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPMGCOMMLREF 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_IPPMGCOMMLREF 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_IPPMGCOMMLREF INTO WA_IPPMGCOMMLREF.


*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 SXIDN, internal->external for field PREPAYMENTCOMMLREFCONTEMAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFCONTEMAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPMGCOMMLREF-PREPAYMENTCOMMLREFCONTEMAIL.
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_IPPMGCOMMLREF_STR, 
MANDT TYPE STRING,
PREPAYMENTCOMMLREFUUID TYPE STRING,
PREPAYMENTAGREEMENTUUID TYPE STRING,
PREPAYMENTCOMMLREFTYPE TYPE STRING,
PREPAYMENTCOMMERCIALREFERENCE TYPE STRING,
PREPAYMENTCOMMLREFNAME TYPE STRING,
PREPAYMENTREFCONTACTPERSONNAME TYPE STRING,
PREPAYMENTCOMMLREFCURJOBTITLE TYPE STRING,
PREPAYMENTCOMMLREFSEGMENT TYPE STRING,
PREPAYMENTCOMMLREFINDSTRYFUNC TYPE STRING,
PREPAYMENTCOMMLREFCITY TYPE STRING,
PREPAYMENTCOMMLREFCONTNUMBER TYPE STRING,
PREPAYMENTCOMMLREFCONTEMAIL TYPE STRING,
PREPAYMENTCOMMLREFDIVISION TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPMGCOMMLREF_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_IPPMGCOMMLREF_STR-MANDT sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFUUID sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTAGREEMENTUUID sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFTYPE sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMERCIALREFERENCE sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFNAME sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTREFCONTACTPERSONNAME sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFCURJOBTITLE sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFSEGMENT sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFINDSTRYFUNC sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFCITY sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFCONTNUMBER sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFCONTEMAIL sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTCOMMLREFDIVISION sy-vline 
WA_IPPMGCOMMLREF_STR-PREPAYMENTAGREEMENT sy-vline 
WA_IPPMGCOMMLREF_STR-CREATEDBYUSER sy-vline 
WA_IPPMGCOMMLREF_STR-CREATIONDATETIME sy-vline 
WA_IPPMGCOMMLREF_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPPMGCOMMLREF_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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