ABAP Select data from SAP table ISCNTRLPURCONCMMDTYEXCHRATE_DR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCNTRLPURCONCMMDTYEXCHRATE_DR
*  INTO TABLE @DATA(IT_ISCNTRLPURCONCMMDTYEXCHRATE_DR2).
*--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_ISCNTRLPURCONCMMDTYEXCHRATE_DR INDEX 1 INTO DATA(WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCNTRLPURCONCMMDTYEXCHRATE_DR>-DRAFTUUID = 1.
<ISCNTRLPURCONCMMDTYEXCHRATE_DR>-PARENTDRAFTUUID = 1.
<ISCNTRLPURCONCMMDTYEXCHRATE_DR>-ROOTDRAFTUUID = 1.
<ISCNTRLPURCONCMMDTYEXCHRATE_DR>-CENTRALPURCHASECONTRACT = 1.
<ISCNTRLPURCONCMMDTYEXCHRATE_DR>-CENTRALPURCHASECONTRACTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CONDITIONRECORD, sy-vline,
  WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CONDITIONVALIDITYENDDATE, sy-vline,
  WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CONDITIONSEQUENTIALNUMBER, sy-vline,
  WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-PRICINGCONDITIONTERM, sy-vline,
  WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-PRCGCNDNTRMEXCHRATEDATETIME, sy-vline,
  WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CNDNEXCHRATEPERDDETNRESULTUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR 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_ISCNTRLPURCONCMMDTYEXCHRATE_DR 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_ISCNTRLPURCONCMMDTYEXCHRATE_DR INTO WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR.


*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 CENTRALPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR-CENTRALPURCHASECONTRACT.
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_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR, 
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
ROOTDRAFTUUID TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
CONDITIONRECORD TYPE STRING,
CONDITIONVALIDITYENDDATE TYPE STRING,
CONDITIONSEQUENTIALNUMBER TYPE STRING,
PRICINGCONDITIONTERM TYPE STRING,
PRCGCNDNTRMEXCHRATEDATETIME TYPE STRING,
CNDNEXCHRATEPERDDETNRESULTUUID TYPE STRING,
PRCGCONDITIONEXCHANGERATETYPE TYPE STRING,
PRICINGCONDITIONSOURCECURRENCY TYPE STRING,
PRICINGCONDITIONTARGETCURRENCY TYPE STRING,
PRICINGCONDITIONEXCHANGERATE TYPE STRING,
NUMBEROFSOURCECURRENCYUNITS TYPE STRING,
NUMBEROFTARGETCURRENCYUNITS TYPE STRING,
CNDNTRMEXCHRATESUBSTNDATETIME TYPE STRING,
CNDNTRMEXCHRATEISNONTRADINGDAY TYPE STRING,
PRCGCNDNTRMEXCHRATEISMISSING TYPE STRING,
CNDNTRMEXCHRATEISSUBSTITUTED TYPE STRING,
PRCGCNDNTRMEXCHRATEISIGNORED TYPE STRING,
PRCGCNDNTRMEXCHRATEFCSTSTATUS TYPE STRING,
PRCGCONDITIONSWAPEXCHANGERATE TYPE STRING,
PRCGCONDITIONSPOTEXCHANGERATE TYPE STRING,
CONDITIONTYPE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_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_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTUUID sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PARENTDRAFTUUID sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-ROOTDRAFTUUID sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CONDITIONRECORD sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CONDITIONVALIDITYENDDATE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CONDITIONSEQUENTIALNUMBER sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRICINGCONDITIONTERM sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCNDNTRMEXCHRATEDATETIME sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CNDNEXCHRATEPERDDETNRESULTUUID sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCONDITIONEXCHANGERATETYPE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRICINGCONDITIONSOURCECURRENCY sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRICINGCONDITIONTARGETCURRENCY sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRICINGCONDITIONEXCHANGERATE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-NUMBEROFSOURCECURRENCYUNITS sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-NUMBEROFTARGETCURRENCYUNITS sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CNDNTRMEXCHRATESUBSTNDATETIME sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CNDNTRMEXCHRATEISNONTRADINGDAY sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCNDNTRMEXCHRATEISMISSING sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CNDNTRMEXCHRATEISSUBSTITUTED sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCNDNTRMEXCHRATEISIGNORED sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCNDNTRMEXCHRATEFCSTSTATUS sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCONDITIONSWAPEXCHANGERATE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-PRCGCONDITIONSPOTEXCHANGERATE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-CONDITIONTYPE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-HASACTIVEENTITY sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISCNTRLPURCONCMMDTYEXCHRATE_DR_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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