ABAP Select data from SAP table /ACCGO/S_FEE_FLDCAT_ASG_NITM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ACCGO/S_FEE_FLDCAT_ASG_NITM 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 /ACCGO/S_FEE_FLDCAT_ASG_NITM. 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 /ACCGO/S_FEE_FLDCAT_ASG_NITM 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_/ACCGO/S_FEE_FLDCAT_ASG_NITM TYPE STANDARD TABLE OF /ACCGO/S_FEE_FLDCAT_ASG_NITM,
      WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM TYPE /ACCGO/S_FEE_FLDCAT_ASG_NITM,
      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: </ACCGO/S_FEE_FLDCAT_ASG_NITM> TYPE /ACCGO/S_FEE_FLDCAT_ASG_NITM.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ACCGO/S_FEE_FLDCAT_ASG_NITM
  INTO TABLE IT_/ACCGO/S_FEE_FLDCAT_ASG_NITM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ACCGO/S_FEE_FLDCAT_ASG_NITM
*  INTO TABLE @DATA(IT_/ACCGO/S_FEE_FLDCAT_ASG_NITM2).
*--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_/ACCGO/S_FEE_FLDCAT_ASG_NITM INDEX 1 INTO DATA(WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ACCGO/S_FEE_FLDCAT_ASG_NITM ASSIGNING </ACCGO/S_FEE_FLDCAT_ASG_NITM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ACCGO/S_FEE_FLDCAT_ASG_NITM>-OIJ_NOMTK = 1.
</ACCGO/S_FEE_FLDCAT_ASG_NITM>-OIJ_NOMTYP = 1.
</ACCGO/S_FEE_FLDCAT_ASG_NITM>-OIJ_NOMNR = 1.
</ACCGO/S_FEE_FLDCAT_ASG_NITM>-OIJ_TSYST = 1.
</ACCGO/S_FEE_FLDCAT_ASG_NITM>-OIJ_SHIPNR = 1.

ENDLOOP.

LOOP AT IT_/ACCGO/S_FEE_FLDCAT_ASG_NITM INTO WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIJ_CARRNR, sy-vline,
  WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIJ_WERK, sy-vline,
  WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIJ_LGORT, sy-vline,
  WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIG_VHLNMR, sy-vline,
  WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIG_VEHID, sy-vline,
  WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-TPLST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM 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_/ACCGO/S_FEE_FLDCAT_ASG_NITM 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_/ACCGO/S_FEE_FLDCAT_ASG_NITM INTO WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM.


*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 OIJ_NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIJ_NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-OIJ_NOMTK.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field S_MATNR_I
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-S_MATNR_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-S_MATNR_I.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field CONPAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-CONPAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM-CONPAT.
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_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR, 
OIJ_NOMTK TYPE STRING,
OIJ_NOMTYP TYPE STRING,
OIJ_NOMNR TYPE STRING,
OIJ_TSYST TYPE STRING,
OIJ_SHIPNR TYPE STRING,
OIJ_CARRNR TYPE STRING,
OIJ_WERK TYPE STRING,
OIJ_LGORT TYPE STRING,
OIG_VHLNMR TYPE STRING,
OIG_VEHID TYPE STRING,
TPLST TYPE STRING,
VKTRA TYPE STRING,
SITYP TYPE STRING,
ISTAT TYPE STRING,
IDATE TYPE STRING,
LOCID TYPE STRING,
S_MATNR_I TYPE STRING,
DOCIND TYPE STRING,
DOCNR TYPE STRING,
DOCITM TYPE STRING,
CONS TYPE STRING,
PARTNR TYPE STRING,
CONPAT TYPE STRING,
/ACCGO/SCP_REL TYPE STRING,
/ACCGO/INCO1 TYPE STRING,
/ACCGO/INCO2 TYPE STRING,
/ACCGO/TRAN_MEAN TYPE STRING,
/ACCGO/DIS_LOC TYPE STRING,
/ACCGO/LOAD_LOC TYPE STRING,
/ACCGO/MOT TYPE STRING,
/ACCGO/LGORT_O TYPE STRING,
/ACCGO/LGORT_D TYPE STRING,
LOCPT TYPE STRING,
LOCSL TYPE STRING,
COMMODITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_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_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_NOMTK sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_NOMTYP sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_NOMNR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_TSYST sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_SHIPNR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_CARRNR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_WERK sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIJ_LGORT sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIG_VHLNMR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-OIG_VEHID sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-TPLST sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-VKTRA sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-SITYP sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-ISTAT sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-IDATE sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-LOCID sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-S_MATNR_I sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-DOCIND sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-DOCNR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-DOCITM sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-CONS sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-PARTNR sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-CONPAT sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/SCP_REL sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/INCO1 sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/INCO2 sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/TRAN_MEAN sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/DIS_LOC sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/LOAD_LOC sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/MOT sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/LGORT_O sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-/ACCGO/LGORT_D sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-LOCPT sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-LOCSL sy-vline 
WA_/ACCGO/S_FEE_FLDCAT_ASG_NITM_STR-COMMODITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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