ABAP Select data from SAP table SDME_SVF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SDME_SVF
*  INTO TABLE @DATA(IT_SDME_SVF2).
*--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_SDME_SVF INDEX 1 INTO DATA(WA_SDME_SVF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SDME_SVF>-OBJNAME = 1.
<SDME_SVF>-ATTRNAME = 1.
<SDME_SVF>-POS = 1.
<SDME_SVF>-WIDTH = 1.
<SDME_SVF>-RDONLYFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SDME_SVF-OBLIGFLG, sy-vline,
  WA_SDME_SVF-UITYPE, sy-vline,
  WA_SDME_SVF-EDITORDER, sy-vline,
  WA_SDME_SVF-TEXTMODIF, sy-vline,
  WA_SDME_SVF-STEXT, sy-vline,
  WA_SDME_SVF-MTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SDME_SVF 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_SDME_SVF 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_SDME_SVF INTO WA_SDME_SVF.


*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_SDME_SVF_STR, 
OBJNAME TYPE STRING,
ATTRNAME TYPE STRING,
POS TYPE STRING,
WIDTH TYPE STRING,
RDONLYFLG TYPE STRING,
OBLIGFLG TYPE STRING,
UITYPE TYPE STRING,
EDITORDER TYPE STRING,
TEXTMODIF TYPE STRING,
STEXT TYPE STRING,
MTEXT TYPE STRING,
LTEXT TYPE STRING,
REPTEXT TYPE STRING,
FTEXT TYPE STRING,
TEXT TYPE STRING,
DISPLOBJN TYPE STRING,
FLGKEY TYPE STRING,
FLGREFOBJ TYPE STRING,
UITYPETXT TYPE STRING,
FLGHEADER TYPE STRING,
FLGFORCERD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SDME_SVF_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_SDME_SVF_STR-OBJNAME sy-vline 
WA_SDME_SVF_STR-ATTRNAME sy-vline 
WA_SDME_SVF_STR-POS sy-vline 
WA_SDME_SVF_STR-WIDTH sy-vline 
WA_SDME_SVF_STR-RDONLYFLG sy-vline 
WA_SDME_SVF_STR-OBLIGFLG sy-vline 
WA_SDME_SVF_STR-UITYPE sy-vline 
WA_SDME_SVF_STR-EDITORDER sy-vline 
WA_SDME_SVF_STR-TEXTMODIF sy-vline 
WA_SDME_SVF_STR-STEXT sy-vline 
WA_SDME_SVF_STR-MTEXT sy-vline 
WA_SDME_SVF_STR-LTEXT sy-vline 
WA_SDME_SVF_STR-REPTEXT sy-vline 
WA_SDME_SVF_STR-FTEXT sy-vline 
WA_SDME_SVF_STR-TEXT sy-vline 
WA_SDME_SVF_STR-DISPLOBJN sy-vline 
WA_SDME_SVF_STR-FLGKEY sy-vline 
WA_SDME_SVF_STR-FLGREFOBJ sy-vline 
WA_SDME_SVF_STR-UITYPETXT sy-vline 
WA_SDME_SVF_STR-FLGHEADER sy-vline 
WA_SDME_SVF_STR-FLGFORCERD sy-vline      INTO ld_text SEPARATED BY SPACE.

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