ABAP Select data from SAP table FINSS_LD_CMP_CURR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FINSS_LD_CMP_CURR 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_LD_CMP_CURR. 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_LD_CMP_CURR 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_LD_CMP_CURR TYPE STANDARD TABLE OF FINSS_LD_CMP_CURR,
      WA_FINSS_LD_CMP_CURR TYPE FINSS_LD_CMP_CURR,
      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_LD_CMP_CURR> TYPE FINSS_LD_CMP_CURR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINSS_LD_CMP_CURR
*  INTO TABLE @DATA(IT_FINSS_LD_CMP_CURR2).
*--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_LD_CMP_CURR INDEX 1 INTO DATA(WA_FINSS_LD_CMP_CURR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINSS_LD_CMP_CURR>-CURTPH = 1.
<FINSS_LD_CMP_CURR>-RATETYPEH = 1.
<FINSS_LD_CMP_CURR>-CURSRH = 1.
<FINSS_LD_CMP_CURR>-CURDTH = 1.
<FINSS_LD_CMP_CURR>-CURTPK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINSS_LD_CMP_CURR-RATETYPEK, sy-vline,
  WA_FINSS_LD_CMP_CURR-CURSRK, sy-vline,
  WA_FINSS_LD_CMP_CURR-CURDTK, sy-vline,
  WA_FINSS_LD_CMP_CURR-CURTPO, sy-vline,
  WA_FINSS_LD_CMP_CURR-RATETYPEO, sy-vline,
  WA_FINSS_LD_CMP_CURR-CURSRO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINSS_LD_CMP_CURR 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_LD_CMP_CURR 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_LD_CMP_CURR INTO WA_FINSS_LD_CMP_CURR.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FINSS_LD_CMP_CURR_STR, 
CURTPH TYPE STRING,
RATETYPEH TYPE STRING,
CURSRH TYPE STRING,
CURDTH TYPE STRING,
CURTPK TYPE STRING,
RATETYPEK TYPE STRING,
CURSRK TYPE STRING,
CURDTK TYPE STRING,
CURTPO TYPE STRING,
RATETYPEO TYPE STRING,
CURSRO TYPE STRING,
CURDTO TYPE STRING,
CURTPV TYPE STRING,
RATETYPEV TYPE STRING,
CURSRV TYPE STRING,
CURDTV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINSS_LD_CMP_CURR_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_LD_CMP_CURR_STR-CURTPH sy-vline 
WA_FINSS_LD_CMP_CURR_STR-RATETYPEH sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURSRH sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURDTH sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURTPK sy-vline 
WA_FINSS_LD_CMP_CURR_STR-RATETYPEK sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURSRK sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURDTK sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURTPO sy-vline 
WA_FINSS_LD_CMP_CURR_STR-RATETYPEO sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURSRO sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURDTO sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURTPV sy-vline 
WA_FINSS_LD_CMP_CURR_STR-RATETYPEV sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURSRV sy-vline 
WA_FINSS_LD_CMP_CURR_STR-CURDTV sy-vline      INTO ld_text SEPARATED BY SPACE.

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