ABAP Select data from SAP table ICMMDTYORDLEGTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICMMDTYORDLEGTP
*  INTO TABLE @DATA(IT_ICMMDTYORDLEGTP2).
*--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_ICMMDTYORDLEGTP INDEX 1 INTO DATA(WA_ICMMDTYORDLEGTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICMMDTYORDLEGTP>-MANDT = 1.
<ICMMDTYORDLEGTP>-CMMDTYORDERREQLEGUUID = 1.
<ICMMDTYORDLEGTP>-COMMODITYORDERREQUESTUUID = 1.
<ICMMDTYORDLEGTP>-COMMODITYORDERREQUEST = 1.
<ICMMDTYORDLEGTP>-CMMDTYORDERREQLEGCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICMMDTYORDLEGTP-CMMDTYORDERREQUESTFLOWTYPE, sy-vline,
  WA_ICMMDTYORDLEGTP-CMMDTYDERIVATIVEFLOWTYPETEXT, sy-vline,
  WA_ICMMDTYORDLEGTP-CMMDTYORDREQUESTQUANTITYINLOT, sy-vline,
  WA_ICMMDTYORDLEGTP-CMMDTYDERIVATIVEQUANTITYPERLOT, sy-vline,
  WA_ICMMDTYORDLEGTP-CMMDTYDRVTVQUANTITYUNITPERLOT, sy-vline,
  WA_ICMMDTYORDLEGTP-CMMDTYDERIVATIVECURRENCYPERLOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICMMDTYORDLEGTP 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_ICMMDTYORDLEGTP 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_ICMMDTYORDLEGTP INTO WA_ICMMDTYORDLEGTP.


*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_ICMMDTYORDLEGTP-COMMODITYORDERREQUEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICMMDTYORDLEGTP-COMMODITYORDERREQUEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRDRVTVCONTRMATURITYCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICMMDTYORDLEGTP-CONTRDRVTVCONTRMATURITYCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICMMDTYORDLEGTP-CONTRDRVTVCONTRMATURITYCODE.
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_ICMMDTYORDLEGTP_STR, 
MANDT TYPE STRING,
CMMDTYORDERREQLEGUUID TYPE STRING,
COMMODITYORDERREQUESTUUID TYPE STRING,
COMMODITYORDERREQUEST TYPE STRING,
CMMDTYORDERREQLEGCATEGORY TYPE STRING,
CMMDTYORDERREQUESTFLOWTYPE TYPE STRING,
CMMDTYDERIVATIVEFLOWTYPETEXT TYPE STRING,
CMMDTYORDREQUESTQUANTITYINLOT TYPE STRING,
CMMDTYDERIVATIVEQUANTITYPERLOT TYPE STRING,
CMMDTYDRVTVQUANTITYUNITPERLOT TYPE STRING,
CMMDTYDERIVATIVECURRENCYPERLOT TYPE STRING,
COMMODITYDERIVATIVEFUTURE TYPE STRING,
COMMODITYDERIVATIVEFUTURENAME TYPE STRING,
DERIVATIVECONTRSPECIFICATION TYPE STRING,
DERIVATIVECONTRSPECNAME TYPE STRING,
MARKETIDENTIFIERCODE TYPE STRING,
MARKETIDENTIFIERCODENAME TYPE STRING,
COMMODITY TYPE STRING,
COMMODITYNAME TYPE STRING,
MATURITYKEYDATE TYPE STRING,
CONTRDRVTVCONTRMATURITYCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICMMDTYORDLEGTP_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_ICMMDTYORDLEGTP_STR-MANDT sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYORDERREQLEGUUID sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITYORDERREQUESTUUID sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITYORDERREQUEST sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYORDERREQLEGCATEGORY sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYORDERREQUESTFLOWTYPE sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYDERIVATIVEFLOWTYPETEXT sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYORDREQUESTQUANTITYINLOT sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYDERIVATIVEQUANTITYPERLOT sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYDRVTVQUANTITYUNITPERLOT sy-vline 
WA_ICMMDTYORDLEGTP_STR-CMMDTYDERIVATIVECURRENCYPERLOT sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITYDERIVATIVEFUTURE sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITYDERIVATIVEFUTURENAME sy-vline 
WA_ICMMDTYORDLEGTP_STR-DERIVATIVECONTRSPECIFICATION sy-vline 
WA_ICMMDTYORDLEGTP_STR-DERIVATIVECONTRSPECNAME sy-vline 
WA_ICMMDTYORDLEGTP_STR-MARKETIDENTIFIERCODE sy-vline 
WA_ICMMDTYORDLEGTP_STR-MARKETIDENTIFIERCODENAME sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITY sy-vline 
WA_ICMMDTYORDLEGTP_STR-COMMODITYNAME sy-vline 
WA_ICMMDTYORDLEGTP_STR-MATURITYKEYDATE sy-vline 
WA_ICMMDTYORDLEGTP_STR-CONTRDRVTVCONTRMATURITYCODE sy-vline 
WA_ICMMDTYORDLEGTP_STR-CREATEDBYUSER sy-vline 
WA_ICMMDTYORDLEGTP_STR-CREATIONDATETIME sy-vline 
WA_ICMMDTYORDLEGTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ICMMDTYORDLEGTP_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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