ABAP Select data from SAP table FINSS_SET_CURR_KEYS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINSS_SET_CURR_KEYS
*  INTO TABLE @DATA(IT_FINSS_SET_CURR_KEYS2).
*--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_FINSS_SET_CURR_KEYS INDEX 1 INTO DATA(WA_FINSS_SET_CURR_KEYS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINSS_SET_CURR_KEYS>-COUNTER = 1.
<FINSS_SET_CURR_KEYS>-RLDNR = 1.
<FINSS_SET_CURR_KEYS>-RBUKRS = 1.
<FINSS_SET_CURR_KEYS>-GJAHR = 1.
<FINSS_SET_CURR_KEYS>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINSS_SET_CURR_KEYS-DOCLN, sy-vline,
  WA_FINSS_SET_CURR_KEYS-RTCUR, sy-vline,
  WA_FINSS_SET_CURR_KEYS-RWCUR, sy-vline,
  WA_FINSS_SET_CURR_KEYS-RHCUR, sy-vline,
  WA_FINSS_SET_CURR_KEYS-RKCUR, sy-vline,
  WA_FINSS_SET_CURR_KEYS-RFCCUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINSS_SET_CURR_KEYS 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_FINSS_SET_CURR_KEYS 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_FINSS_SET_CURR_KEYS INTO WA_FINSS_SET_CURR_KEYS.


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

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

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINSS_SET_CURR_KEYS-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINSS_SET_CURR_KEYS-BELNR.
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_FINSS_SET_CURR_KEYS_STR, 
COUNTER TYPE STRING,
RLDNR TYPE STRING,
RBUKRS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
DOCLN TYPE STRING,
RTCUR TYPE STRING,
RWCUR TYPE STRING,
RHCUR TYPE STRING,
RKCUR TYPE STRING,
RFCCUR TYPE STRING,
ROCUR TYPE STRING,
RVCUR TYPE STRING,
RBCUR TYPE STRING,
RCCUR TYPE STRING,
RDCUR TYPE STRING,
RECUR TYPE STRING,
RFCUR TYPE STRING,
RGCUR TYPE STRING,
RCO_OCUR TYPE STRING,
RGM_OCUR TYPE STRING,
KSL TYPE STRING,
OSL TYPE STRING,
VSL TYPE STRING,
BSL TYPE STRING,
CSL TYPE STRING,
DSL TYPE STRING,
ESL TYPE STRING,
FSL TYPE STRING,
GSL TYPE STRING,
UPDATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINSS_SET_CURR_KEYS_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_FINSS_SET_CURR_KEYS_STR-COUNTER sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RLDNR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RBUKRS sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-GJAHR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-BELNR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-DOCLN sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RTCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RWCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RHCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RKCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RFCCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-ROCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RVCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RBCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RCCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RDCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RECUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RFCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RGCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RCO_OCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-RGM_OCUR sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-KSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-OSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-VSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-BSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-CSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-DSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-ESL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-FSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-GSL sy-vline 
WA_FINSS_SET_CURR_KEYS_STR-UPDATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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