ABAP Select data from SAP table SMPPREL3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SMPPREL3 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 SMPPREL3. 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 SMPPREL3 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_SMPPREL3 TYPE STANDARD TABLE OF SMPPREL3,
      WA_SMPPREL3 TYPE SMPPREL3,
      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: <SMPPREL3> TYPE SMPPREL3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SMPPREL3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SMPPREL3
  INTO TABLE IT_SMPPREL3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMPPREL3
*  INTO TABLE @DATA(IT_SMPPREL32).
*--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_SMPPREL3 INDEX 1 INTO DATA(WA_SMPPREL32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SMPPREL3 ASSIGNING <SMPPREL3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMPPREL3>-CLIENT = 1.
<SMPPREL3>-GUID = 1.
<SMPPREL3>-COUNTER = 1.
<SMPPREL3>-FROMACTIONNS = 1.
<SMPPREL3>-FROMACTION = 1.

ENDLOOP.

LOOP AT IT_SMPPREL3 INTO WA_SMPPREL3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMPPREL3-FROMPARTY, sy-vline,
  WA_SMPPREL3-FROMSRVC, sy-vline,
  WA_SMPPREL3-TOPARTY, sy-vline,
  WA_SMPPREL3-TOSRVC, sy-vline,
  WA_SMPPREL3-TOACTIONNS, sy-vline,
  WA_SMPPREL3-TOACTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMPPREL3 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_SMPPREL3 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_SMPPREL3 INTO WA_SMPPREL3.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SMPPREL3_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
COUNTER TYPE STRING,
FROMACTIONNS TYPE STRING,
FROMACTION TYPE STRING,
FROMPARTY TYPE STRING,
FROMSRVC TYPE STRING,
TOPARTY TYPE STRING,
TOSRVC TYPE STRING,
TOACTIONNS TYPE STRING,
TOACTION TYPE STRING,
OBJECT_ID TYPE STRING,
MAPREQUIRED TYPE STRING,
MAP_OBJECT_ID TYPE STRING,
MAP_VERSION_ID TYPE STRING,
MAP_VERSION_SP TYPE STRING,
MAP_VERSION_CP TYPE STRING,
MAPNS TYPE STRING,
MAPNAME TYPE STRING,
CONDITION_ID TYPE STRING,
QUALITY TYPE STRING,
PROP_ID TYPE STRING,
FROMOPERATION TYPE STRING,
FROMXMLROOT TYPE STRING,
FROMXMLROOTNS TYPE STRING,
TOOPERATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMPPREL3_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_SMPPREL3_STR-CLIENT sy-vline 
WA_SMPPREL3_STR-GUID sy-vline 
WA_SMPPREL3_STR-COUNTER sy-vline 
WA_SMPPREL3_STR-FROMACTIONNS sy-vline 
WA_SMPPREL3_STR-FROMACTION sy-vline 
WA_SMPPREL3_STR-FROMPARTY sy-vline 
WA_SMPPREL3_STR-FROMSRVC sy-vline 
WA_SMPPREL3_STR-TOPARTY sy-vline 
WA_SMPPREL3_STR-TOSRVC sy-vline 
WA_SMPPREL3_STR-TOACTIONNS sy-vline 
WA_SMPPREL3_STR-TOACTION sy-vline 
WA_SMPPREL3_STR-OBJECT_ID sy-vline 
WA_SMPPREL3_STR-MAPREQUIRED sy-vline 
WA_SMPPREL3_STR-MAP_OBJECT_ID sy-vline 
WA_SMPPREL3_STR-MAP_VERSION_ID sy-vline 
WA_SMPPREL3_STR-MAP_VERSION_SP sy-vline 
WA_SMPPREL3_STR-MAP_VERSION_CP sy-vline 
WA_SMPPREL3_STR-MAPNS sy-vline 
WA_SMPPREL3_STR-MAPNAME sy-vline 
WA_SMPPREL3_STR-CONDITION_ID sy-vline 
WA_SMPPREL3_STR-QUALITY sy-vline 
WA_SMPPREL3_STR-PROP_ID sy-vline 
WA_SMPPREL3_STR-FROMOPERATION sy-vline 
WA_SMPPREL3_STR-FROMXMLROOT sy-vline 
WA_SMPPREL3_STR-FROMXMLROOTNS sy-vline 
WA_SMPPREL3_STR-TOOPERATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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