ABAP Select data from SAP table FCOM_EXP_DIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOM_EXP_DIS
*  INTO TABLE @DATA(IT_FCOM_EXP_DIS2).
*--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_FCOM_EXP_DIS INDEX 1 INTO DATA(WA_FCOM_EXP_DIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOM_EXP_DIS>-KOKRS = 1.
<FCOM_EXP_DIS>-KOSTL = 1.
<FCOM_EXP_DIS>-KOSTLTEXT = 1.
<FCOM_EXP_DIS>-LSTAR = 1.
<FCOM_EXP_DIS>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOM_EXP_DIS-VERSION, sy-vline,
  WA_FCOM_EXP_DIS-PER01, sy-vline,
  WA_FCOM_EXP_DIS-PER02, sy-vline,
  WA_FCOM_EXP_DIS-PER03, sy-vline,
  WA_FCOM_EXP_DIS-PER04, sy-vline,
  WA_FCOM_EXP_DIS-PER05, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOM_EXP_DIS 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_FCOM_EXP_DIS 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_FCOM_EXP_DIS INTO WA_FCOM_EXP_DIS.


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

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

*Conversion exit CUNIT, internal->external for field LEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_DIS-LEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_DIS-LEINH.
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_FCOM_EXP_DIS_STR, 
KOKRS TYPE STRING,
KOSTL TYPE STRING,
KOSTLTEXT TYPE STRING,
LSTAR TYPE STRING,
GJAHR TYPE STRING,
VERSION TYPE STRING,
PER01 TYPE STRING,
PER02 TYPE STRING,
PER03 TYPE STRING,
PER04 TYPE STRING,
PER05 TYPE STRING,
PER06 TYPE STRING,
PER07 TYPE STRING,
PER08 TYPE STRING,
PER09 TYPE STRING,
PER10 TYPE STRING,
PER11 TYPE STRING,
PER12 TYPE STRING,
PER13 TYPE STRING,
PER14 TYPE STRING,
PER15 TYPE STRING,
PER16 TYPE STRING,
QUAR1 TYPE STRING,
QUAR2 TYPE STRING,
QUAR3 TYPE STRING,
QUAR4 TYPE STRING,
YEAR_DIS TYPE STRING,
LEINH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOM_EXP_DIS_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_FCOM_EXP_DIS_STR-KOKRS sy-vline 
WA_FCOM_EXP_DIS_STR-KOSTL sy-vline 
WA_FCOM_EXP_DIS_STR-KOSTLTEXT sy-vline 
WA_FCOM_EXP_DIS_STR-LSTAR sy-vline 
WA_FCOM_EXP_DIS_STR-GJAHR sy-vline 
WA_FCOM_EXP_DIS_STR-VERSION sy-vline 
WA_FCOM_EXP_DIS_STR-PER01 sy-vline 
WA_FCOM_EXP_DIS_STR-PER02 sy-vline 
WA_FCOM_EXP_DIS_STR-PER03 sy-vline 
WA_FCOM_EXP_DIS_STR-PER04 sy-vline 
WA_FCOM_EXP_DIS_STR-PER05 sy-vline 
WA_FCOM_EXP_DIS_STR-PER06 sy-vline 
WA_FCOM_EXP_DIS_STR-PER07 sy-vline 
WA_FCOM_EXP_DIS_STR-PER08 sy-vline 
WA_FCOM_EXP_DIS_STR-PER09 sy-vline 
WA_FCOM_EXP_DIS_STR-PER10 sy-vline 
WA_FCOM_EXP_DIS_STR-PER11 sy-vline 
WA_FCOM_EXP_DIS_STR-PER12 sy-vline 
WA_FCOM_EXP_DIS_STR-PER13 sy-vline 
WA_FCOM_EXP_DIS_STR-PER14 sy-vline 
WA_FCOM_EXP_DIS_STR-PER15 sy-vline 
WA_FCOM_EXP_DIS_STR-PER16 sy-vline 
WA_FCOM_EXP_DIS_STR-QUAR1 sy-vline 
WA_FCOM_EXP_DIS_STR-QUAR2 sy-vline 
WA_FCOM_EXP_DIS_STR-QUAR3 sy-vline 
WA_FCOM_EXP_DIS_STR-QUAR4 sy-vline 
WA_FCOM_EXP_DIS_STR-YEAR_DIS sy-vline 
WA_FCOM_EXP_DIS_STR-LEINH sy-vline      INTO ld_text SEPARATED BY SPACE.

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