ABAP Select data from SAP table IFNETCNFIM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFNETCNFIM
*  INTO TABLE @DATA(IT_IFNETCNFIM2).
*--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_IFNETCNFIM INDEX 1 INTO DATA(WA_IFNETCNFIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFNETCNFIM>-LEKNW = 1.
<IFNETCNFIM>-RUECK = 1.
<IFNETCNFIM>-ARBPL = 1.
<IFNETCNFIM>-WERKS = 1.
<IFNETCNFIM>-BUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFNETCNFIM-ISMNW, sy-vline,
  WA_IFNETCNFIM-ISMNE, sy-vline,
  WA_IFNETCNFIM-IDAUR, sy-vline,
  WA_IFNETCNFIM-IDAUE, sy-vline,
  WA_IFNETCNFIM-ISDD, sy-vline,
  WA_IFNETCNFIM-ISDZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFNETCNFIM 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_IFNETCNFIM 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_IFNETCNFIM INTO WA_IFNETCNFIM.


*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 CUNIT, internal->external for field ISMNE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFNETCNFIM-ISMNE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFNETCNFIM-ISMNE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field IDAUE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFNETCNFIM-IDAUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFNETCNFIM-IDAUE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ODAUE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFNETCNFIM-ODAUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFNETCNFIM-ODAUE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OFMNE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFNETCNFIM-OFMNE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFNETCNFIM-OFMNE.
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_IFNETCNFIM_STR, 
LEKNW TYPE STRING,
RUECK TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
BUDAT TYPE STRING,
ISMNW TYPE STRING,
ISMNE TYPE STRING,
IDAUR TYPE STRING,
IDAUE TYPE STRING,
ISDD TYPE STRING,
ISDZ TYPE STRING,
IEDD TYPE STRING,
IEDZ TYPE STRING,
PEDD TYPE STRING,
PEDZ TYPE STRING,
ODAUR TYPE STRING,
ODAUE TYPE STRING,
OFMNW TYPE STRING,
OFMNE TYPE STRING,
LEARR TYPE STRING,
PERNR TYPE STRING,
ABARB TYPE STRING,
AUERU TYPE STRING,
LTXA1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFNETCNFIM_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_IFNETCNFIM_STR-LEKNW sy-vline 
WA_IFNETCNFIM_STR-RUECK sy-vline 
WA_IFNETCNFIM_STR-ARBPL sy-vline 
WA_IFNETCNFIM_STR-WERKS sy-vline 
WA_IFNETCNFIM_STR-BUDAT sy-vline 
WA_IFNETCNFIM_STR-ISMNW sy-vline 
WA_IFNETCNFIM_STR-ISMNE sy-vline 
WA_IFNETCNFIM_STR-IDAUR sy-vline 
WA_IFNETCNFIM_STR-IDAUE sy-vline 
WA_IFNETCNFIM_STR-ISDD sy-vline 
WA_IFNETCNFIM_STR-ISDZ sy-vline 
WA_IFNETCNFIM_STR-IEDD sy-vline 
WA_IFNETCNFIM_STR-IEDZ sy-vline 
WA_IFNETCNFIM_STR-PEDD sy-vline 
WA_IFNETCNFIM_STR-PEDZ sy-vline 
WA_IFNETCNFIM_STR-ODAUR sy-vline 
WA_IFNETCNFIM_STR-ODAUE sy-vline 
WA_IFNETCNFIM_STR-OFMNW sy-vline 
WA_IFNETCNFIM_STR-OFMNE sy-vline 
WA_IFNETCNFIM_STR-LEARR sy-vline 
WA_IFNETCNFIM_STR-PERNR sy-vline 
WA_IFNETCNFIM_STR-ABARB sy-vline 
WA_IFNETCNFIM_STR-AUERU sy-vline 
WA_IFNETCNFIM_STR-LTXA1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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