ABAP Select data from SAP table FCOM_EXP_ACTVAL_INP 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_ACTVAL_INP 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_ACTVAL_INP. 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_ACTVAL_INP 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_ACTVAL_INP TYPE STANDARD TABLE OF FCOM_EXP_ACTVAL_INP,
      WA_FCOM_EXP_ACTVAL_INP TYPE FCOM_EXP_ACTVAL_INP,
      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_ACTVAL_INP> TYPE FCOM_EXP_ACTVAL_INP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOM_EXP_ACTVAL_INP
*  INTO TABLE @DATA(IT_FCOM_EXP_ACTVAL_INP2).
*--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_ACTVAL_INP INDEX 1 INTO DATA(WA_FCOM_EXP_ACTVAL_INP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOM_EXP_ACTVAL_INP>-UNAME = 1.
<FCOM_EXP_ACTVAL_INP>-SCENARIO = 1.
<FCOM_EXP_ACTVAL_INP>-INSTANCE = 1.
<FCOM_EXP_ACTVAL_INP>-RFC_DEST = 1.
<FCOM_EXP_ACTVAL_INP>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOM_EXP_ACTVAL_INP-WRTTP_EXT, sy-vline,
  WA_FCOM_EXP_ACTVAL_INP-FISC_YEAR, sy-vline,
  WA_FCOM_EXP_ACTVAL_INP-VERSION, sy-vline,
  WA_FCOM_EXP_ACTVAL_INP-OBART, sy-vline,
  WA_FCOM_EXP_ACTVAL_INP-SETCURR, sy-vline,
  WA_FCOM_EXP_ACTVAL_INP-OBJ_SEL_LA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOM_EXP_ACTVAL_INP 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_ACTVAL_INP 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_ACTVAL_INP INTO WA_FCOM_EXP_ACTVAL_INP.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field REF1_FISC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF1_FISC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF1_FISC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF1_VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF1_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF1_VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF1_WRTTP_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF1_WRTTP_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF1_WRTTP_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REF2_FISC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF2_FISC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF2_FISC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF2_VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF2_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF2_VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF2_WRTTP_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCOM_EXP_ACTVAL_INP-REF2_WRTTP_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCOM_EXP_ACTVAL_INP-REF2_WRTTP_EXT.
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_ACTVAL_INP_STR, 
UNAME TYPE STRING,
SCENARIO TYPE STRING,
INSTANCE TYPE STRING,
RFC_DEST TYPE STRING,
KOKRS TYPE STRING,
WRTTP_EXT TYPE STRING,
FISC_YEAR TYPE STRING,
VERSION TYPE STRING,
OBART TYPE STRING,
SETCURR TYPE STRING,
OBJ_SEL_LA TYPE STRING,
DIALOG_LA TYPE STRING,
LSTAR_FROM TYPE STRING,
LSTAR_TO TYPE STRING,
LAGRU_INT TYPE STRING,
OBJ_SEL_KA TYPE STRING,
DIALOG_KA TYPE STRING,
KSTAR_FROM TYPE STRING,
KSTAR_TO TYPE STRING,
KAGRU_INT TYPE STRING,
REF1_FISC_YEAR TYPE STRING,
REF1_VERSION TYPE STRING,
REF1_WRTTP_EXT TYPE STRING,
REF2_FISC_YEAR TYPE STRING,
REF2_VERSION TYPE STRING,
REF2_WRTTP_EXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOM_EXP_ACTVAL_INP_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_ACTVAL_INP_STR-UNAME sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-SCENARIO sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-INSTANCE sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-RFC_DEST sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-KOKRS sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-WRTTP_EXT sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-FISC_YEAR sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-VERSION sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-OBART sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-SETCURR sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-OBJ_SEL_LA sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-DIALOG_LA sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-LSTAR_FROM sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-LSTAR_TO sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-LAGRU_INT sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-OBJ_SEL_KA sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-DIALOG_KA sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-KSTAR_FROM sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-KSTAR_TO sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-KAGRU_INT sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF1_FISC_YEAR sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF1_VERSION sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF1_WRTTP_EXT sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF2_FISC_YEAR sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF2_VERSION sy-vline 
WA_FCOM_EXP_ACTVAL_INP_STR-REF2_WRTTP_EXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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