ABAP Select data from SAP table PRF_C_LEGACY_SRM_STRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRF_C_LEGACY_SRM_STRUC
*  INTO TABLE @DATA(IT_PRF_C_LEGACY_SRM_STRUC2).
*--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_PRF_C_LEGACY_SRM_STRUC INDEX 1 INTO DATA(WA_PRF_C_LEGACY_SRM_STRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRF_C_LEGACY_SRM_STRUC>-OBJECT_ID = 1.
<PRF_C_LEGACY_SRM_STRUC>-OBJECT_TYPE = 1.
<PRF_C_LEGACY_SRM_STRUC>-GUID = 1.
<PRF_C_LEGACY_SRM_STRUC>-VENDOR = 1.
<PRF_C_LEGACY_SRM_STRUC>-PROCESS_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRF_C_LEGACY_SRM_STRUC-POSTING_DATE, sy-vline,
  WA_PRF_C_LEGACY_SRM_STRUC-TOTAL_VALUE, sy-vline,
  WA_PRF_C_LEGACY_SRM_STRUC-CURRENCY, sy-vline,
  WA_PRF_C_LEGACY_SRM_STRUC-YGAZCREATE, sy-vline,
  WA_PRF_C_LEGACY_SRM_STRUC-YGAZHEADDET, sy-vline,
  WA_PRF_C_LEGACY_SRM_STRUC-YATMID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRF_C_LEGACY_SRM_STRUC 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_PRF_C_LEGACY_SRM_STRUC 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_PRF_C_LEGACY_SRM_STRUC INTO WA_PRF_C_LEGACY_SRM_STRUC.


*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_PRF_C_LEGACY_SRM_STRUC_STR, 
OBJECT_ID TYPE STRING,
OBJECT_TYPE TYPE STRING,
GUID TYPE STRING,
VENDOR TYPE STRING,
PROCESS_TYPE TYPE STRING,
POSTING_DATE TYPE STRING,
TOTAL_VALUE TYPE STRING,
CURRENCY TYPE STRING,
YGAZCREATE TYPE STRING,
YGAZHEADDET TYPE STRING,
YATMID TYPE STRING,
YBLOCK TYPE STRING,
YCONTACTC TYPE STRING,
YPCODE TYPE STRING,
YDESC1 TYPE STRING,
YDESC2 TYPE STRING,
YUNSPSCODE TYPE STRING,
YCONTRACTNO TYPE STRING,
YCODE TYPE STRING,
YPROCUREMETHOD TYPE STRING,
YENDDATE TYPE STRING,
YREFERENCE TYPE STRING,
YSONID TYPE STRING,
YCONSFLAG TYPE STRING,
YCONSREASON TYPE STRING,
YCIFLAG TYPE STRING,
YCIREASON TYPE STRING,
YCIREASON2 TYPE STRING,
YCIREASON3 TYPE STRING,
YCIREASON4 TYPE STRING,
YCIREASON5 TYPE STRING,
YCIREASON6 TYPE STRING,
YCIREASON7 TYPE STRING,
YCIREASON8 TYPE STRING,
YCIREASON9 TYPE STRING,
YOTHERCIDESC TYPE STRING,
YCIOUTFLAG TYPE STRING,
YCIOUTREASON TYPE STRING,
YCIOUTREASON2 TYPE STRING,
YCIOUTREASON3 TYPE STRING,
YCIOUTREASON4 TYPE STRING,
YCIOUTREASON5 TYPE STRING,
YCIOUTREASON6 TYPE STRING,
YCIOUTREASON7 TYPE STRING,
YCIOUTREASON8 TYPE STRING,
YCIOUTREASON9 TYPE STRING,
YCIOUTREASON10 TYPE STRING,
YCIOUTOTHER TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
TZONE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRF_C_LEGACY_SRM_STRUC_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_PRF_C_LEGACY_SRM_STRUC_STR-OBJECT_ID sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-OBJECT_TYPE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-GUID sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-VENDOR sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-PROCESS_TYPE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-POSTING_DATE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-TOTAL_VALUE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-CURRENCY sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YGAZCREATE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YGAZHEADDET sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YATMID sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YBLOCK sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCONTACTC sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YPCODE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YDESC1 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YDESC2 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YUNSPSCODE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCONTRACTNO sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCODE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YPROCUREMETHOD sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YENDDATE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YREFERENCE sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YSONID sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCONSFLAG sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCONSREASON sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIFLAG sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON2 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON3 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON4 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON5 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON6 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON7 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON8 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIREASON9 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YOTHERCIDESC sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTFLAG sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON2 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON3 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON4 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON5 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON6 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON7 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON8 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON9 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTREASON10 sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-YCIOUTOTHER sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-CREATED_BY sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-CREATED_AT sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-CHANGED_BY sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-CHANGED_AT sy-vline 
WA_PRF_C_LEGACY_SRM_STRUC_STR-TZONE sy-vline      INTO ld_text SEPARATED BY SPACE.

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