ABAP Select data from SAP table FAC_ACC_DET_S_STD_RULE_ETAG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAC_ACC_DET_S_STD_RULE_ETAG
*  INTO TABLE @DATA(IT_FAC_ACC_DET_S_STD_RULE_ETAG2).
*--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_FAC_ACC_DET_S_STD_RULE_ETAG INDEX 1 INTO DATA(WA_FAC_ACC_DET_S_STD_RULE_ETAG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FAC_ACC_DET_S_STD_RULE_ETAG>-MANDT = 1.
<FAC_ACC_DET_S_STD_RULE_ETAG>-KTOPL = 1.
<FAC_ACC_DET_S_STD_RULE_ETAG>-KTOSL = 1.
<FAC_ACC_DET_S_STD_RULE_ETAG>-BWMOD = 1.
<FAC_ACC_DET_S_STD_RULE_ETAG>-KOMOK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAC_ACC_DET_S_STD_RULE_ETAG-BKLAS, sy-vline,
  WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTS, sy-vline,
  WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTH, sy-vline,
  WA_FAC_ACC_DET_S_STD_RULE_ETAG-XKOMO, sy-vline,
  WA_FAC_ACC_DET_S_STD_RULE_ETAG-XBWMO, sy-vline,
  WA_FAC_ACC_DET_S_STD_RULE_ETAG-XBKLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAC_ACC_DET_S_STD_RULE_ETAG 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_FAC_ACC_DET_S_STD_RULE_ETAG 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_FAC_ACC_DET_S_STD_RULE_ETAG INTO WA_FAC_ACC_DET_S_STD_RULE_ETAG.


*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.

*Conversion exit ALPHA, internal->external for field KONTS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAC_ACC_DET_S_STD_RULE_ETAG-KONTH.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_FAC_ACC_DET_S_STD_RULE_ETAG_STR, 
MANDT TYPE STRING,
KTOPL TYPE STRING,
KTOSL TYPE STRING,
BWMOD TYPE STRING,
KOMOK TYPE STRING,
BKLAS TYPE STRING,
KONTS TYPE STRING,
KONTH TYPE STRING,
XKOMO TYPE STRING,
XBWMO TYPE STRING,
XBKLA TYPE STRING,
XDIKO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAC_ACC_DET_S_STD_RULE_ETAG_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_FAC_ACC_DET_S_STD_RULE_ETAG_STR-MANDT sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-KTOPL sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-KTOSL sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-BWMOD sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-KOMOK sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-BKLAS sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-KONTS sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-KONTH sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-XKOMO sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-XBWMO sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-XBKLA sy-vline 
WA_FAC_ACC_DET_S_STD_RULE_ETAG_STR-XDIKO sy-vline      INTO ld_text SEPARATED BY SPACE.

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