ABAP Select data from SAP table FILA_IDAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FILA_IDAT
*  INTO TABLE @DATA(IT_FILA_IDAT2).
*--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_FILA_IDAT INDEX 1 INTO DATA(WA_FILA_IDAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FILA_IDAT>-DATE_FROM = 1.
<FILA_IDAT>-VALITY_FROM = 1.
<FILA_IDAT>-VALITY_TO = 1.
<FILA_IDAT>-EFFDATE = 1.
<FILA_IDAT>-BDOTP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FILA_IDAT-BUDAT, sy-vline,
  WA_FILA_IDAT-BLDAT, sy-vline,
  WA_FILA_IDAT-WWERT, sy-vline,
  WA_FILA_IDAT-BZDAT, sy-vline,
  WA_FILA_IDAT-UBZDT, sy-vline,
  WA_FILA_IDAT-ADATU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FILA_IDAT 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_FILA_IDAT 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_FILA_IDAT INTO WA_FILA_IDAT.


*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_FILA_IDAT_STR, 
DATE_FROM TYPE STRING,
VALITY_FROM TYPE STRING,
VALITY_TO TYPE STRING,
EFFDATE TYPE STRING,
BDOTP TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
WWERT TYPE STRING,
BZDAT TYPE STRING,
UBZDT TYPE STRING,
ADATU TYPE STRING,
ZUONR TYPE STRING,
XSTOP_FIAA TYPE STRING,
XSTOP_ACE TYPE STRING,
XANEU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FILA_IDAT_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_FILA_IDAT_STR-DATE_FROM sy-vline 
WA_FILA_IDAT_STR-VALITY_FROM sy-vline 
WA_FILA_IDAT_STR-VALITY_TO sy-vline 
WA_FILA_IDAT_STR-EFFDATE sy-vline 
WA_FILA_IDAT_STR-BDOTP sy-vline 
WA_FILA_IDAT_STR-BUDAT sy-vline 
WA_FILA_IDAT_STR-BLDAT sy-vline 
WA_FILA_IDAT_STR-WWERT sy-vline 
WA_FILA_IDAT_STR-BZDAT sy-vline 
WA_FILA_IDAT_STR-UBZDT sy-vline 
WA_FILA_IDAT_STR-ADATU sy-vline 
WA_FILA_IDAT_STR-ZUONR sy-vline 
WA_FILA_IDAT_STR-XSTOP_FIAA sy-vline 
WA_FILA_IDAT_STR-XSTOP_ACE sy-vline 
WA_FILA_IDAT_STR-XANEU sy-vline      INTO ld_text SEPARATED BY SPACE.

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