ABAP Select data from SAP table FCIW_S_BW_EXSRC_02A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FCIW_S_BW_EXSRC_02A 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 FCIW_S_BW_EXSRC_02A. 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 FCIW_S_BW_EXSRC_02A 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_FCIW_S_BW_EXSRC_02A TYPE STANDARD TABLE OF FCIW_S_BW_EXSRC_02A,
      WA_FCIW_S_BW_EXSRC_02A TYPE FCIW_S_BW_EXSRC_02A,
      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: <FCIW_S_BW_EXSRC_02A> TYPE FCIW_S_BW_EXSRC_02A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FCIW_S_BW_EXSRC_02A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FCIW_S_BW_EXSRC_02A
  INTO TABLE IT_FCIW_S_BW_EXSRC_02A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCIW_S_BW_EXSRC_02A
*  INTO TABLE @DATA(IT_FCIW_S_BW_EXSRC_02A2).
*--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_FCIW_S_BW_EXSRC_02A INDEX 1 INTO DATA(WA_FCIW_S_BW_EXSRC_02A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FCIW_S_BW_EXSRC_02A ASSIGNING <FCIW_S_BW_EXSRC_02A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCIW_S_BW_EXSRC_02A>-RYEAR = 1.
<FCIW_S_BW_EXSRC_02A>-PERID = 1.
<FCIW_S_BW_EXSRC_02A>-FISCVARNT = 1.
<FCIW_S_BW_EXSRC_02A>-RVERS = 1.
<FCIW_S_BW_EXSRC_02A>-DIMEN = 1.

ENDLOOP.

LOOP AT IT_FCIW_S_BW_EXSRC_02A INTO WA_FCIW_S_BW_EXSRC_02A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCIW_S_BW_EXSRC_02A-BUNIT, sy-vline,
  WA_FCIW_S_BW_EXSRC_02A-COICU, sy-vline,
  WA_FCIW_S_BW_EXSRC_02A-ITCLG, sy-vline,
  WA_FCIW_S_BW_EXSRC_02A-ITEM, sy-vline,
  WA_FCIW_S_BW_EXSRC_02A-SITYP, sy-vline,
  WA_FCIW_S_BW_EXSRC_02A-SITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCIW_S_BW_EXSRC_02A 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_FCIW_S_BW_EXSRC_02A 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_FCIW_S_BW_EXSRC_02A INTO WA_FCIW_S_BW_EXSRC_02A.


*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 RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field BUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-BUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-BUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field COICU
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-COICU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-COICU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field ITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-ITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COINR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-COINR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-COINR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field BKVLC
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-BKVLC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-BKVLC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field BKVRC
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-BKVRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-BKVRC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCIW_S_BW_EXSRC_02A-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCIW_S_BW_EXSRC_02A-RLDNR.
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_FCIW_S_BW_EXSRC_02A_STR, 
RYEAR TYPE STRING,
PERID TYPE STRING,
FISCVARNT TYPE STRING,
RVERS TYPE STRING,
DIMEN TYPE STRING,
BUNIT TYPE STRING,
COICU TYPE STRING,
ITCLG TYPE STRING,
ITEM TYPE STRING,
SITYP TYPE STRING,
SITEM TYPE STRING,
COIAC TYPE STRING,
COINR TYPE STRING,
PCNT1 TYPE STRING,
RLCUR TYPE STRING,
RGCUR TYPE STRING,
BKVLC TYPE STRING,
BKVRC TYPE STRING,
SPCNT TYPE STRING,
SVALU TYPE STRING,
RLDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCIW_S_BW_EXSRC_02A_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_FCIW_S_BW_EXSRC_02A_STR-RYEAR sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-PERID sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-FISCVARNT sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-RVERS sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-DIMEN sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-BUNIT sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-COICU sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-ITCLG sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-ITEM sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-SITYP sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-SITEM sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-COIAC sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-COINR sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-PCNT1 sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-RLCUR sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-RGCUR sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-BKVLC sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-BKVRC sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-SPCNT sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-SVALU sy-vline 
WA_FCIW_S_BW_EXSRC_02A_STR-RLDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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