ABAP Select data from SAP table IACMTCPRFIXOVW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IACMTCPRFIXOVW
*  INTO TABLE @DATA(IT_IACMTCPRFIXOVW2).
*--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_IACMTCPRFIXOVW INDEX 1 INTO DATA(WA_IACMTCPRFIXOVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IACMTCPRFIXOVW>-MANDT = 1.
<IACMTCPRFIXOVW>-TRADINGCONTRACTNUMBER = 1.
<IACMTCPRFIXOVW>-TRADINGCONTRACTITEM = 1.
<IACMTCPRFIXOVW>-PRICINGCNDNTERMEXTENSIONGROUP = 1.
<IACMTCPRFIXOVW>-ACMCONDITIONTERMNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IACMTCPRFIXOVW-ACMPRICINGASPECT, sy-vline,
  WA_IACMTCPRFIXOVW-ACMPRICINGASPECTVALUE, sy-vline,
  WA_IACMTCPRFIXOVW-DERIVATIVECONTRSPECIFICATION, sy-vline,
  WA_IACMTCPRFIXOVW-ACMPRICINGMARKETIDENTIFIERCODE, sy-vline,
  WA_IACMTCPRFIXOVW-MATURITYKEYDATE, sy-vline,
  WA_IACMTCPRFIXOVW-ACMPRCGCNDNFUTUREPRICE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IACMTCPRFIXOVW 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_IACMTCPRFIXOVW 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_IACMTCPRFIXOVW INTO WA_IACMTCPRFIXOVW.


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

*Conversion exit CUNIT, internal->external for field ACMPRCGCNDNFIXEDRATEFUTUREUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IACMTCPRFIXOVW-ACMPRCGCNDNFIXEDRATEFUTUREUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACMTCPRFIXOVW-ACMPRCGCNDNFIXEDRATEFUTUREUOM.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ACMFORMULAUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IACMTCPRFIXOVW-ACMFORMULAUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACMTCPRFIXOVW-ACMFORMULAUOM.
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_IACMTCPRFIXOVW_STR, 
MANDT TYPE STRING,
TRADINGCONTRACTNUMBER TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
PRICINGCNDNTERMEXTENSIONGROUP TYPE STRING,
ACMCONDITIONTERMNUMBER TYPE STRING,
ACMPRICINGASPECT TYPE STRING,
ACMPRICINGASPECTVALUE TYPE STRING,
DERIVATIVECONTRSPECIFICATION TYPE STRING,
ACMPRICINGMARKETIDENTIFIERCODE TYPE STRING,
MATURITYKEYDATE TYPE STRING,
ACMPRCGCNDNFUTUREPRICE TYPE STRING,
ACMPRCGCNDNFUTURETERMCRCY TYPE STRING,
ACMPRCGCNDNFUTUREFIXEDRATEQTY TYPE STRING,
ACMPRCGCNDNFIXEDRATEFUTUREUOM TYPE STRING,
CMMDTYMATURITYMONTHYEAR TYPE STRING,
COMMODITYPRODUCTSYMBOL TYPE STRING,
DERIVATIVECONTRACTMATURITYCODE TYPE STRING,
PRCGCNDNTRADINGCONTRCURRENCY TYPE STRING,
CONTRDRVTVCONTRMATURITYCODE TYPE STRING,
ACMFORMULAUOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IACMTCPRFIXOVW_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_IACMTCPRFIXOVW_STR-MANDT sy-vline 
WA_IACMTCPRFIXOVW_STR-TRADINGCONTRACTNUMBER sy-vline 
WA_IACMTCPRFIXOVW_STR-TRADINGCONTRACTITEM sy-vline 
WA_IACMTCPRFIXOVW_STR-PRICINGCNDNTERMEXTENSIONGROUP sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMCONDITIONTERMNUMBER sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRICINGASPECT sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRICINGASPECTVALUE sy-vline 
WA_IACMTCPRFIXOVW_STR-DERIVATIVECONTRSPECIFICATION sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRICINGMARKETIDENTIFIERCODE sy-vline 
WA_IACMTCPRFIXOVW_STR-MATURITYKEYDATE sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRCGCNDNFUTUREPRICE sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRCGCNDNFUTURETERMCRCY sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRCGCNDNFUTUREFIXEDRATEQTY sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMPRCGCNDNFIXEDRATEFUTUREUOM sy-vline 
WA_IACMTCPRFIXOVW_STR-CMMDTYMATURITYMONTHYEAR sy-vline 
WA_IACMTCPRFIXOVW_STR-COMMODITYPRODUCTSYMBOL sy-vline 
WA_IACMTCPRFIXOVW_STR-DERIVATIVECONTRACTMATURITYCODE sy-vline 
WA_IACMTCPRFIXOVW_STR-PRCGCNDNTRADINGCONTRCURRENCY sy-vline 
WA_IACMTCPRFIXOVW_STR-CONTRDRVTVCONTRMATURITYCODE sy-vline 
WA_IACMTCPRFIXOVW_STR-ACMFORMULAUOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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