ABAP Select data from SAP table IINVGCSMLOCREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IINVGCSMLOCREL
*  INTO TABLE @DATA(IT_IINVGCSMLOCREL2).
*--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_IINVGCSMLOCREL INDEX 1 INTO DATA(WA_IINVGCSMLOCREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IINVGCSMLOCREL>-MANDT = 1.
<IINVGCSMLOCREL>-INVGCSMRELATIONSHIPUUID = 1.
<IINVGCSMLOCREL>-INVGCSMRELATIONSHIPSOURCEUUID = 1.
<IINVGCSMLOCREL>-INVGCSMRELATIONSHIPTARGETUUID = 1.
<IINVGCSMLOCREL>-INVGCSMRELSOURCETYPEID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IINVGCSMLOCREL-INVGCSMRELTARGETTYPEID, sy-vline,
  WA_IINVGCSMLOCREL-INVGCSMRELATIONSHIPTYPEID, sy-vline,
  WA_IINVGCSMLOCREL-INVGCSMRELSECURITYLEVEL, sy-vline,
  WA_IINVGCSMLOCREL-INVGCSMRELATIONSHIPEXPUNGEDATE, sy-vline,
  WA_IINVGCSMLOCREL-INVGCSMRELVALIDFROMDATE, sy-vline,
  WA_IINVGCSMLOCREL-INVGCSMRELATIONSHIPVALIDTODATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IINVGCSMLOCREL 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_IINVGCSMLOCREL 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_IINVGCSMLOCREL INTO WA_IINVGCSMLOCREL.


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

*Conversion exit ALPHA, internal->external for field INVGCSMRELCHANGEDBYORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IINVGCSMLOCREL-INVGCSMRELCHANGEDBYORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IINVGCSMLOCREL-INVGCSMRELCHANGEDBYORGID.
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_IINVGCSMLOCREL_STR, 
MANDT TYPE STRING,
INVGCSMRELATIONSHIPUUID TYPE STRING,
INVGCSMRELATIONSHIPSOURCEUUID TYPE STRING,
INVGCSMRELATIONSHIPTARGETUUID TYPE STRING,
INVGCSMRELSOURCETYPEID TYPE STRING,
INVGCSMRELTARGETTYPEID TYPE STRING,
INVGCSMRELATIONSHIPTYPEID TYPE STRING,
INVGCSMRELSECURITYLEVEL TYPE STRING,
INVGCSMRELATIONSHIPEXPUNGEDATE TYPE STRING,
INVGCSMRELVALIDFROMDATE TYPE STRING,
INVGCSMRELATIONSHIPVALIDTODATE TYPE STRING,
INVGCSMRELATIONSHIPISDELETED TYPE STRING,
INVGCSMRELARCHIVESTATUSCODE TYPE STRING,
INVGCSMRELENTITIESHASH TYPE STRING,
INVGCSMRELCREATEDDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
INVGCSMRELCHANGEDDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
INVGCSMRELCREATEDBYORGID TYPE STRING,
INVGCSMRELCHANGEDBYORGID TYPE STRING,
INVGCSMRELISHIDDEN TYPE STRING,
INVGCSMRELIABILITYMATRIXUUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IINVGCSMLOCREL_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_IINVGCSMLOCREL_STR-MANDT sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPUUID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPSOURCEUUID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPTARGETUUID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELSOURCETYPEID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELTARGETTYPEID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPTYPEID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELSECURITYLEVEL sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPEXPUNGEDATE sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELVALIDFROMDATE sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPVALIDTODATE sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELATIONSHIPISDELETED sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELARCHIVESTATUSCODE sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELENTITIESHASH sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELCREATEDDATETIME sy-vline 
WA_IINVGCSMLOCREL_STR-CREATEDBYUSER sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELCHANGEDDATETIME sy-vline 
WA_IINVGCSMLOCREL_STR-LASTCHANGEDBYUSER sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELCREATEDBYORGID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELCHANGEDBYORGID sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELISHIDDEN sy-vline 
WA_IINVGCSMLOCREL_STR-INVGCSMRELIABILITYMATRIXUUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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