ABAP Select data from SAP table MARKET_RATE_FX_RATE_ENTITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MARKET_RATE_FX_RATE_ENTITY
*  INTO TABLE @DATA(IT_MARKET_RATE_FX_RATE_ENTITY2).
*--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_MARKET_RATE_FX_RATE_ENTITY INDEX 1 INTO DATA(WA_MARKET_RATE_FX_RATE_ENTITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MARKET_RATE_FX_RATE_ENTITY>-OS_GUID = 1.
<MARKET_RATE_FX_RATE_ENTITY>-GUID = 1.
<MARKET_RATE_FX_RATE_ENTITY>-MARKETDATACATEGORY = 1.
<MARKET_RATE_FX_RATE_ENTITY>-SOURCECURRENCY = 1.
<MARKET_RATE_FX_RATE_ENTITY>-TARGETCURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MARKET_RATE_FX_RATE_ENTITY-EXCHANGERATETYPE, sy-vline,
  WA_MARKET_RATE_FX_RATE_ENTITY-VALUEDATE, sy-vline,
  WA_MARKET_RATE_FX_RATE_ENTITY-VALUETIME, sy-vline,
  WA_MARKET_RATE_FX_RATE_ENTITY-EXCHANGERATE, sy-vline,
  WA_MARKET_RATE_FX_RATE_ENTITY-SOURCECONVERSIONFACTOR, sy-vline,
  WA_MARKET_RATE_FX_RATE_ENTITY-TARGETCONVERSIONFACTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MARKET_RATE_FX_RATE_ENTITY 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_MARKET_RATE_FX_RATE_ENTITY 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_MARKET_RATE_FX_RATE_ENTITY INTO WA_MARKET_RATE_FX_RATE_ENTITY.


*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_MARKET_RATE_FX_RATE_ENTITY_STR, 
OS_GUID TYPE STRING,
GUID TYPE STRING,
MARKETDATACATEGORY TYPE STRING,
SOURCECURRENCY TYPE STRING,
TARGETCURRENCY TYPE STRING,
EXCHANGERATETYPE TYPE STRING,
VALUEDATE TYPE STRING,
VALUETIME TYPE STRING,
EXCHANGERATE TYPE STRING,
SOURCECONVERSIONFACTOR TYPE STRING,
TARGETCONVERSIONFACTOR TYPE STRING,
QUOTATIONCURRENCY TYPE STRING,
FRGNEXCHPRICEQUOTATION TYPE STRING,
EFFECTIVETERM TYPE STRING,
STATUS TYPE STRING,
MESSAGE TYPE STRING,
FILELINENUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MARKET_RATE_FX_RATE_ENTITY_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_MARKET_RATE_FX_RATE_ENTITY_STR-OS_GUID sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-GUID sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-MARKETDATACATEGORY sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-SOURCECURRENCY sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-TARGETCURRENCY sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-EXCHANGERATETYPE sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-VALUEDATE sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-VALUETIME sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-EXCHANGERATE sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-SOURCECONVERSIONFACTOR sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-TARGETCONVERSIONFACTOR sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-QUOTATIONCURRENCY sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-FRGNEXCHPRICEQUOTATION sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-EFFECTIVETERM sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-STATUS sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-MESSAGE sy-vline 
WA_MARKET_RATE_FX_RATE_ENTITY_STR-FILELINENUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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