ABAP Select data from SAP table EHFNDS_AUTH_BUFFER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_AUTH_BUFFER
*  INTO TABLE @DATA(IT_EHFNDS_AUTH_BUFFER2).
*--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_EHFNDS_AUTH_BUFFER INDEX 1 INTO DATA(WA_EHFNDS_AUTH_BUFFER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_AUTH_BUFFER>-ACTVT = 1.
<EHFNDS_AUTH_BUFFER>-AUTH_OBJECT = 1.
<EHFNDS_AUTH_BUFFER>-FIELD1 = 1.
<EHFNDS_AUTH_BUFFER>-FIELD2 = 1.
<EHFNDS_AUTH_BUFFER>-FIELD3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_AUTH_BUFFER-FIELD4, sy-vline,
  WA_EHFNDS_AUTH_BUFFER-FIELD5, sy-vline,
  WA_EHFNDS_AUTH_BUFFER-FIELD6, sy-vline,
  WA_EHFNDS_AUTH_BUFFER-FIELD7, sy-vline,
  WA_EHFNDS_AUTH_BUFFER-FIELD8, sy-vline,
  WA_EHFNDS_AUTH_BUFFER-FIELD9, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_AUTH_BUFFER 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_EHFNDS_AUTH_BUFFER 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_EHFNDS_AUTH_BUFFER INTO WA_EHFNDS_AUTH_BUFFER.


*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_EHFNDS_AUTH_BUFFER_STR, 
ACTVT TYPE STRING,
AUTH_OBJECT TYPE STRING,
FIELD1 TYPE STRING,
FIELD2 TYPE STRING,
FIELD3 TYPE STRING,
FIELD4 TYPE STRING,
FIELD5 TYPE STRING,
FIELD6 TYPE STRING,
FIELD7 TYPE STRING,
FIELD8 TYPE STRING,
FIELD9 TYPE STRING,
VALUE1 TYPE STRING,
VALUE2 TYPE STRING,
VALUE3 TYPE STRING,
VALUE4 TYPE STRING,
VALUE5 TYPE STRING,
VALUE6 TYPE STRING,
VALUE7 TYPE STRING,
VALUE8 TYPE STRING,
VALUE9 TYPE STRING,
SUBRC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_AUTH_BUFFER_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_EHFNDS_AUTH_BUFFER_STR-ACTVT sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-AUTH_OBJECT sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD1 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD2 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD3 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD4 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD5 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD6 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD7 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD8 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-FIELD9 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE1 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE2 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE3 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE4 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE5 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE6 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE7 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE8 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-VALUE9 sy-vline 
WA_EHFNDS_AUTH_BUFFER_STR-SUBRC sy-vline      INTO ld_text SEPARATED BY SPACE.

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