ABAP Select data from SAP table FDIES_ASCII into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDIES_ASCII
*  INTO TABLE @DATA(IT_FDIES_ASCII2).
*--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_FDIES_ASCII INDEX 1 INTO DATA(WA_FDIES_ASCII2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDIES_ASCII>-DMSHB = 1.
<FDIES_ASCII>-WRSHB = 1.
<FDIES_ASCII>-KURST = 1.
<FDIES_ASCII>-XINVR = 1.
<FDIES_ASCII>-DSART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDIES_ASCII-USRID, sy-vline,
  WA_FDIES_ASCII-HZDAT, sy-vline,
  WA_FDIES_ASCII-AENUS, sy-vline,
  WA_FDIES_ASCII-AENDT, sy-vline,
  WA_FDIES_ASCII-AVDAT, sy-vline,
  WA_FDIES_ASCII-MERKM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDIES_ASCII 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_FDIES_ASCII 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_FDIES_ASCII INTO WA_FDIES_ASCII.


*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 GGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDIES_ASCII-GGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDIES_ASCII-GGRUP.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field LQPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDIES_ASCII-LQPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDIES_ASCII-LQPOS.
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_FDIES_ASCII_STR, 
DMSHB TYPE STRING,
WRSHB TYPE STRING,
KURST TYPE STRING,
XINVR TYPE STRING,
DSART TYPE STRING,
USRID TYPE STRING,
HZDAT TYPE STRING,
AENUS TYPE STRING,
AENDT TYPE STRING,
AVDAT TYPE STRING,
MERKM TYPE STRING,
ZUONR TYPE STRING,
REFER TYPE STRING,
SGTXT TYPE STRING,
GGRUP TYPE STRING,
GBUKR TYPE STRING,
GVALT TYPE STRING,
AUSNR TYPE STRING,
AUSTG TYPE STRING,
VOART TYPE STRING,
ZINSS TYPE STRING,
KLART TYPE STRING,
STKNZ TYPE STRING,
SDATM TYPE STRING,
KLIDR TYPE STRING,
KLGND TYPE STRING,
AUTH_REL TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
ZLSCH TYPE STRING,
LQPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDIES_ASCII_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_FDIES_ASCII_STR-DMSHB sy-vline 
WA_FDIES_ASCII_STR-WRSHB sy-vline 
WA_FDIES_ASCII_STR-KURST sy-vline 
WA_FDIES_ASCII_STR-XINVR sy-vline 
WA_FDIES_ASCII_STR-DSART sy-vline 
WA_FDIES_ASCII_STR-USRID sy-vline 
WA_FDIES_ASCII_STR-HZDAT sy-vline 
WA_FDIES_ASCII_STR-AENUS sy-vline 
WA_FDIES_ASCII_STR-AENDT sy-vline 
WA_FDIES_ASCII_STR-AVDAT sy-vline 
WA_FDIES_ASCII_STR-MERKM sy-vline 
WA_FDIES_ASCII_STR-ZUONR sy-vline 
WA_FDIES_ASCII_STR-REFER sy-vline 
WA_FDIES_ASCII_STR-SGTXT sy-vline 
WA_FDIES_ASCII_STR-GGRUP sy-vline 
WA_FDIES_ASCII_STR-GBUKR sy-vline 
WA_FDIES_ASCII_STR-GVALT sy-vline 
WA_FDIES_ASCII_STR-AUSNR sy-vline 
WA_FDIES_ASCII_STR-AUSTG sy-vline 
WA_FDIES_ASCII_STR-VOART sy-vline 
WA_FDIES_ASCII_STR-ZINSS sy-vline 
WA_FDIES_ASCII_STR-KLART sy-vline 
WA_FDIES_ASCII_STR-STKNZ sy-vline 
WA_FDIES_ASCII_STR-SDATM sy-vline 
WA_FDIES_ASCII_STR-KLIDR sy-vline 
WA_FDIES_ASCII_STR-KLGND sy-vline 
WA_FDIES_ASCII_STR-AUTH_REL sy-vline 
WA_FDIES_ASCII_STR-SEGMENT sy-vline 
WA_FDIES_ASCII_STR-PRCTR sy-vline 
WA_FDIES_ASCII_STR-GEBER sy-vline 
WA_FDIES_ASCII_STR-GRANT_NBR sy-vline 
WA_FDIES_ASCII_STR-HBKID sy-vline 
WA_FDIES_ASCII_STR-HKTID sy-vline 
WA_FDIES_ASCII_STR-ZLSCH sy-vline 
WA_FDIES_ASCII_STR-LQPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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