ABAP Select data from SAP table CCRCYEXCHRTLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCRCYEXCHRTLG
*  INTO TABLE @DATA(IT_CCRCYEXCHRTLG2).
*--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_CCRCYEXCHRTLG INDEX 1 INTO DATA(WA_CCRCYEXCHRTLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCRCYEXCHRTLG>-MANDT = 1.
<CCRCYEXCHRTLG>-TABLECHANGELOGDATE = 1.
<CCRCYEXCHRTLG>-TABLECHANGELOGTIME = 1.
<CCRCYEXCHRTLG>-TABLECHANGELOG = 1.
<CCRCYEXCHRTLG>-TABLECHANGELOGKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCRCYEXCHRTLG-TABLECHANGELOGUSER, sy-vline,
  WA_CCRCYEXCHRTLG-FULLNAME, sy-vline,
  WA_CCRCYEXCHRTLG-TABLECHANGELOGOPERATION, sy-vline,
  WA_CCRCYEXCHRTLG-TABLECHANGELOGVERSION, sy-vline,
  WA_CCRCYEXCHRTLG-LANGUAGE, sy-vline,
  WA_CCRCYEXCHRTLG-SAPCLIENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCRCYEXCHRTLG 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_CCRCYEXCHRTLG 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_CCRCYEXCHRTLG INTO WA_CCRCYEXCHRTLG.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CCRCYEXCHRTLG-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCRCYEXCHRTLG-LANGUAGE.
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_CCRCYEXCHRTLG_STR, 
MANDT TYPE STRING,
TABLECHANGELOGDATE TYPE STRING,
TABLECHANGELOGTIME TYPE STRING,
TABLECHANGELOG TYPE STRING,
TABLECHANGELOGKEY TYPE STRING,
TABLECHANGELOGUSER TYPE STRING,
FULLNAME TYPE STRING,
TABLECHANGELOGOPERATION TYPE STRING,
TABLECHANGELOGVERSION TYPE STRING,
LANGUAGE TYPE STRING,
SAPCLIENT TYPE STRING,
EXCHANGERATETYPE TYPE STRING,
SOURCECURRENCY TYPE STRING,
TARGETCURRENCY TYPE STRING,
EXCHANGERATEEFFECTIVEDATE TYPE STRING,
PREVEXCHRATEISINDRCTQUOTATION TYPE STRING,
PREVEXCHANGERATEQUOTATIONNAME TYPE STRING,
OPERATIONTEXT TYPE STRING,
PREVIOUSABSOLUTEEXCHANGERATE TYPE STRING,
EXCHRATEISINDIRECTQUOTATION TYPE STRING,
EXCHANGERATEQUOTATIONNAME TYPE STRING,
ABSOLUTEEXCHANGERATE TYPE STRING,
NMBROFCHANGELOGDATACHARACTERS TYPE STRING,
TABLECHANGELOGVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCRCYEXCHRTLG_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_CCRCYEXCHRTLG_STR-MANDT sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGDATE sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGTIME sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOG sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGKEY sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGUSER sy-vline 
WA_CCRCYEXCHRTLG_STR-FULLNAME sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGOPERATION sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGVERSION sy-vline 
WA_CCRCYEXCHRTLG_STR-LANGUAGE sy-vline 
WA_CCRCYEXCHRTLG_STR-SAPCLIENT sy-vline 
WA_CCRCYEXCHRTLG_STR-EXCHANGERATETYPE sy-vline 
WA_CCRCYEXCHRTLG_STR-SOURCECURRENCY sy-vline 
WA_CCRCYEXCHRTLG_STR-TARGETCURRENCY sy-vline 
WA_CCRCYEXCHRTLG_STR-EXCHANGERATEEFFECTIVEDATE sy-vline 
WA_CCRCYEXCHRTLG_STR-PREVEXCHRATEISINDRCTQUOTATION sy-vline 
WA_CCRCYEXCHRTLG_STR-PREVEXCHANGERATEQUOTATIONNAME sy-vline 
WA_CCRCYEXCHRTLG_STR-OPERATIONTEXT sy-vline 
WA_CCRCYEXCHRTLG_STR-PREVIOUSABSOLUTEEXCHANGERATE sy-vline 
WA_CCRCYEXCHRTLG_STR-EXCHRATEISINDIRECTQUOTATION sy-vline 
WA_CCRCYEXCHRTLG_STR-EXCHANGERATEQUOTATIONNAME sy-vline 
WA_CCRCYEXCHRTLG_STR-ABSOLUTEEXCHANGERATE sy-vline 
WA_CCRCYEXCHRTLG_STR-NMBROFCHANGELOGDATACHARACTERS sy-vline 
WA_CCRCYEXCHRTLG_STR-TABLECHANGELOGVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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