ABAP Select data from SAP table FIRO_S_DSPL_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIRO_S_DSPL_ITEM
*  INTO TABLE @DATA(IT_FIRO_S_DSPL_ITEM2).
*--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_FIRO_S_DSPL_ITEM INDEX 1 INTO DATA(WA_FIRO_S_DSPL_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIRO_S_DSPL_ITEM>-TIP = 1.
<FIRO_S_DSPL_ITEM>-TIP_PARTENER = 1.
<FIRO_S_DSPL_ITEM>-COTA = 1.
<FIRO_S_DSPL_ITEM>-CUIP = 1.
<FIRO_S_DSPL_ITEM>-DENP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIRO_S_DSPL_ITEM-TARAP, sy-vline,
  WA_FIRO_S_DSPL_ITEM-LOCP, sy-vline,
  WA_FIRO_S_DSPL_ITEM-JUDP, sy-vline,
  WA_FIRO_S_DSPL_ITEM-STRP, sy-vline,
  WA_FIRO_S_DSPL_ITEM-NRP, sy-vline,
  WA_FIRO_S_DSPL_ITEM-BLP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIRO_S_DSPL_ITEM 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_FIRO_S_DSPL_ITEM 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_FIRO_S_DSPL_ITEM INTO WA_FIRO_S_DSPL_ITEM.


*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_FIRO_S_DSPL_ITEM_STR, 
TIP TYPE STRING,
TIP_PARTENER TYPE STRING,
COTA TYPE STRING,
CUIP TYPE STRING,
DENP TYPE STRING,
TARAP TYPE STRING,
LOCP TYPE STRING,
JUDP TYPE STRING,
STRP TYPE STRING,
NRP TYPE STRING,
BLP TYPE STRING,
APP TYPE STRING,
DETP TYPE STRING,
TIP_DOCUMENT TYPE STRING,
NRFACT TYPE STRING,
BAZA TYPE STRING,
TVA TYPE STRING,
PRSAFILIATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIRO_S_DSPL_ITEM_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_FIRO_S_DSPL_ITEM_STR-TIP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-TIP_PARTENER sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-COTA sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-CUIP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-DENP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-TARAP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-LOCP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-JUDP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-STRP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-NRP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-BLP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-APP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-DETP sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-TIP_DOCUMENT sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-NRFACT sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-BAZA sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-TVA sy-vline 
WA_FIRO_S_DSPL_ITEM_STR-PRSAFILIATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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