ABAP Select data from SAP table AMRFC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AMRFC 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 AMRFC. 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 AMRFC 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_AMRFC TYPE STANDARD TABLE OF AMRFC,
      WA_AMRFC TYPE AMRFC,
      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: <AMRFC> TYPE AMRFC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AMRFC
*  INTO TABLE @DATA(IT_AMRFC2).
*--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_AMRFC INDEX 1 INTO DATA(WA_AMRFC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AMRFC>-PROCGUID = 1.
<AMRFC>-DESTIN = 1.
<AMRFC>-LFNUM = 1.
<AMRFC>-TCODE = 1.
<AMRFC>-WPID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AMRFC-WPTYP, sy-vline,
  WA_AMRFC-MANDT, sy-vline,
  WA_AMRFC-UNAME, sy-vline,
  WA_AMRFC-TIME, sy-vline,
  WA_AMRFC-DURATION, sy-vline,
  WA_AMRFC-REPORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AMRFC 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_AMRFC 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_AMRFC INTO WA_AMRFC.


*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_AMRFC_STR, 
PROCGUID TYPE STRING,
DESTIN TYPE STRING,
LFNUM TYPE STRING,
TCODE TYPE STRING,
WPID TYPE STRING,
WPTYP TYPE STRING,
MANDT TYPE STRING,
UNAME TYPE STRING,
TIME TYPE STRING,
DURATION TYPE STRING,
REPORT TYPE STRING,
OBJECT TYPE STRING,
OPERATION TYPE STRING,
RETCODE TYPE STRING,
CON_NAME TYPE STRING,
STATEMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AMRFC_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_AMRFC_STR-PROCGUID sy-vline 
WA_AMRFC_STR-DESTIN sy-vline 
WA_AMRFC_STR-LFNUM sy-vline 
WA_AMRFC_STR-TCODE sy-vline 
WA_AMRFC_STR-WPID sy-vline 
WA_AMRFC_STR-WPTYP sy-vline 
WA_AMRFC_STR-MANDT sy-vline 
WA_AMRFC_STR-UNAME sy-vline 
WA_AMRFC_STR-TIME sy-vline 
WA_AMRFC_STR-DURATION sy-vline 
WA_AMRFC_STR-REPORT sy-vline 
WA_AMRFC_STR-OBJECT sy-vline 
WA_AMRFC_STR-OPERATION sy-vline 
WA_AMRFC_STR-RETCODE sy-vline 
WA_AMRFC_STR-CON_NAME sy-vline 
WA_AMRFC_STR-STATEMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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