ABAP Select data from SAP table ISCMMDTYORDERREQLEGTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCMMDTYORDERREQLEGTP
*  INTO TABLE @DATA(IT_ISCMMDTYORDERREQLEGTP2).
*--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_ISCMMDTYORDERREQLEGTP INDEX 1 INTO DATA(WA_ISCMMDTYORDERREQLEGTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCMMDTYORDERREQLEGTP>-KEY = 1.
<ISCMMDTYORDERREQLEGTP>-PARENT_KEY = 1.
<ISCMMDTYORDERREQLEGTP>-ROOT_KEY = 1.
<ISCMMDTYORDERREQLEGTP>-COMMODITYORDERREQUEST = 1.
<ISCMMDTYORDERREQLEGTP>-CMMDTYORDERREQLEGCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCMMDTYORDERREQLEGTP-CMMDTYORDERREQUESTFLOWTYPE, sy-vline,
  WA_ISCMMDTYORDERREQLEGTP-CMMDTYORDERFILLFUTUREID, sy-vline,
  WA_ISCMMDTYORDERREQLEGTP-DERIVATIVECONTRSPECIFICATION, sy-vline,
  WA_ISCMMDTYORDERREQLEGTP-MARKETIDENTIFIERCODE, sy-vline,
  WA_ISCMMDTYORDERREQLEGTP-COMMODITY, sy-vline,
  WA_ISCMMDTYORDERREQLEGTP-MATURITYKEYDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCMMDTYORDERREQLEGTP 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_ISCMMDTYORDERREQLEGTP 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_ISCMMDTYORDERREQLEGTP INTO WA_ISCMMDTYORDERREQLEGTP.


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

*Conversion exit ALPHA, internal->external for field CMMDTYORDREQCNTRPTYBROKER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCMMDTYORDERREQLEGTP-CMMDTYORDREQCNTRPTYBROKER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCMMDTYORDERREQLEGTP-CMMDTYORDREQCNTRPTYBROKER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCEBROKERACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCMMDTYORDERREQLEGTP-REFERENCEBROKERACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCMMDTYORDERREQLEGTP-REFERENCEBROKERACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COMMODITYSUBACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCMMDTYORDERREQLEGTP-COMMODITYSUBACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCMMDTYORDERREQLEGTP-COMMODITYSUBACCOUNT.
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_ISCMMDTYORDERREQLEGTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
COMMODITYORDERREQUEST TYPE STRING,
CMMDTYORDERREQLEGCATEGORY TYPE STRING,
CMMDTYORDERREQUESTFLOWTYPE TYPE STRING,
CMMDTYORDERFILLFUTUREID TYPE STRING,
DERIVATIVECONTRSPECIFICATION TYPE STRING,
MARKETIDENTIFIERCODE TYPE STRING,
COMMODITY TYPE STRING,
MATURITYKEYDATE TYPE STRING,
CMMDTYORDREQCNTRPTYBROKER TYPE STRING,
REFERENCEBROKERACCOUNT TYPE STRING,
COMMODITYSUBACCOUNT TYPE STRING,
CMMDTYORDREQUESTQUANTITYINLOT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ACTIVEUUID 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_ISCMMDTYORDERREQLEGTP_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_ISCMMDTYORDERREQLEGTP_STR-KEY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-PARENT_KEY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-ROOT_KEY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-COMMODITYORDERREQUEST sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CMMDTYORDERREQLEGCATEGORY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CMMDTYORDERREQUESTFLOWTYPE sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CMMDTYORDERFILLFUTUREID sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DERIVATIVECONTRSPECIFICATION sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-MARKETIDENTIFIERCODE sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-COMMODITY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-MATURITYKEYDATE sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CMMDTYORDREQCNTRPTYBROKER sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-REFERENCEBROKERACCOUNT sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-COMMODITYSUBACCOUNT sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CMMDTYORDREQUESTQUANTITYINLOT sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CREATEDBYUSER sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-CREATIONDATETIME sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-ACTIVEUUID sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-HASACTIVEENTITY sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISCMMDTYORDERREQLEGTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISCMMDTYORDERREQLEGTP_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.