ABAP Select data from SAP table IF001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IF001 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 IF001. 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 IF001 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_IF001 TYPE STANDARD TABLE OF IF001,
      WA_IF001 TYPE IF001,
      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: <IF001> TYPE IF001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IF001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IF001
  INTO TABLE IT_IF001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IF001
*  INTO TABLE @DATA(IT_IF0012).
*--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_IF001 INDEX 1 INTO DATA(WA_IF0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IF001 ASSIGNING <IF001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IF001>-MANDT = 1.
<IF001>-VERSIO = 1.
<IF001>-PLACTI = 1.
<IF001>-YEARB = 1.
<IF001>-PERDE = 1.

ENDLOOP.

LOOP AT IT_IF001 INTO WA_IF001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IF001-VERSO, sy-vline,
  WA_IF001-SPART, sy-vline,
  WA_IF001-GEBIE, sy-vline,
  WA_IF001-REGIO, sy-vline,
  WA_IF001-OBUKR, sy-vline,
  WA_IF001-KNDGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IF001 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_IF001 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_IF001 INTO WA_IF001.


*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 VERSIO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IF001-VERSIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IF001-VERSIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YEARB
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IF001-YEARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IF001-YEARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QABSMG
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IF001-QABSMG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IF001-QABSMG.
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_IF001_STR, 
MANDT TYPE STRING,
VERSIO TYPE STRING,
PLACTI TYPE STRING,
YEARB TYPE STRING,
PERDE TYPE STRING,
VERSO TYPE STRING,
SPART TYPE STRING,
GEBIE TYPE STRING,
REGIO TYPE STRING,
OBUKR TYPE STRING,
KNDGR TYPE STRING,
ARTGR TYPE STRING,
PRCTR TYPE STRING,
GSBER TYPE STRING,
VALTY TYPE STRING,
RECNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
VERSO_WAERS TYPE STRING,
ABSMG TYPE STRING,
QABSMG TYPE STRING,
ERLOS TYPE STRING,
VSVP TYPE STRING,
VPROV TYPE STRING,
WEINS TYPE STRING,
EINFR TYPE STRING,
EINVP TYPE STRING,
ROHST TYPE STRING,
PRODF TYPE STRING,
PRODP TYPE STRING,
HLFST TYPE STRING,
VTRGK TYPE STRING,
ADMGK TYPE STRING,
RABAT TYPE STRING,
BONUS TYPE STRING,
MRABA TYPE STRING,
PRABW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IF001_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_IF001_STR-MANDT sy-vline 
WA_IF001_STR-VERSIO sy-vline 
WA_IF001_STR-PLACTI sy-vline 
WA_IF001_STR-YEARB sy-vline 
WA_IF001_STR-PERDE sy-vline 
WA_IF001_STR-VERSO sy-vline 
WA_IF001_STR-SPART sy-vline 
WA_IF001_STR-GEBIE sy-vline 
WA_IF001_STR-REGIO sy-vline 
WA_IF001_STR-OBUKR sy-vline 
WA_IF001_STR-KNDGR sy-vline 
WA_IF001_STR-ARTGR sy-vline 
WA_IF001_STR-PRCTR sy-vline 
WA_IF001_STR-GSBER sy-vline 
WA_IF001_STR-VALTY sy-vline 
WA_IF001_STR-RECNR sy-vline 
WA_IF001_STR-AEDTM sy-vline 
WA_IF001_STR-UNAME sy-vline 
WA_IF001_STR-VERSO_WAERS sy-vline 
WA_IF001_STR-ABSMG sy-vline 
WA_IF001_STR-QABSMG sy-vline 
WA_IF001_STR-ERLOS sy-vline 
WA_IF001_STR-VSVP sy-vline 
WA_IF001_STR-VPROV sy-vline 
WA_IF001_STR-WEINS sy-vline 
WA_IF001_STR-EINFR sy-vline 
WA_IF001_STR-EINVP sy-vline 
WA_IF001_STR-ROHST sy-vline 
WA_IF001_STR-PRODF sy-vline 
WA_IF001_STR-PRODP sy-vline 
WA_IF001_STR-HLFST sy-vline 
WA_IF001_STR-VTRGK sy-vline 
WA_IF001_STR-ADMGK sy-vline 
WA_IF001_STR-RABAT sy-vline 
WA_IF001_STR-BONUS sy-vline 
WA_IF001_STR-MRABA sy-vline 
WA_IF001_STR-PRABW sy-vline      INTO ld_text SEPARATED BY SPACE.

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