ABAP Select data from SAP table IACMPRCGASPCT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IACMPRCGASPCT
*  INTO TABLE @DATA(IT_IACMPRCGASPCT2).
*--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_IACMPRCGASPCT INDEX 1 INTO DATA(WA_IACMPRCGASPCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IACMPRCGASPCT>-MANDT = 1.
<IACMPRCGASPCT>-TRADINGCONTRACTNUMBER = 1.
<IACMPRCGASPCT>-TRADINGCONTRACTITEM = 1.
<IACMPRCGASPCT>-ACMPRICINGASPECT = 1.
<IACMPRCGASPCT>-ACMPRICINGASPECTVALUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IACMPRCGASPCT-TRDGCONTRPRCGASPECTSRCELOTID, sy-vline,
  WA_IACMPRCGASPCT-TRDGCONTRPRCGASPECTDUMMYLOTID, sy-vline,
  WA_IACMPRCGASPCT-PRICINGCONDITIONTERM, sy-vline,
  WA_IACMPRCGASPCT-ACMPRCGCNDNFLATPRICE, sy-vline,
  WA_IACMPRCGASPCT-ACMPRCGCNDNCUMLTVBASISPRICE, sy-vline,
  WA_IACMPRCGASPCT-ACMPRCGCNDNCUMLTVBASISCRCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IACMPRCGASPCT 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_IACMPRCGASPCT 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_IACMPRCGASPCT INTO WA_IACMPRCGASPCT.


*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_IACMPRCGASPCT-TRADINGCONTRACTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACMPRCGASPCT-TRADINGCONTRACTNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ACMFORMULAUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IACMPRCGASPCT-ACMFORMULAUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACMPRCGASPCT-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_IACMPRCGASPCT_STR, 
MANDT TYPE STRING,
TRADINGCONTRACTNUMBER TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
ACMPRICINGASPECT TYPE STRING,
ACMPRICINGASPECTVALUE TYPE STRING,
TRDGCONTRPRCGASPECTSRCELOTID TYPE STRING,
TRDGCONTRPRCGASPECTDUMMYLOTID TYPE STRING,
PRICINGCONDITIONTERM TYPE STRING,
ACMPRCGCNDNFLATPRICE TYPE STRING,
ACMPRCGCNDNCUMLTVBASISPRICE TYPE STRING,
ACMPRCGCNDNCUMLTVBASISCRCY TYPE STRING,
CONTRACTTRADEQUANTITY TYPE STRING,
CONTRACTTRADEUNIT TYPE STRING,
DERIVATIVECONTRSPECIFICATION TYPE STRING,
ACMPRICINGMARKETIDENTIFIERCODE TYPE STRING,
DERIVATIVECONTRACTMATURITYCODE TYPE STRING,
MATURITYKEYDATE TYPE STRING,
PRCGCNDNTRADINGCONTRCURRENCY TYPE STRING,
ACMTRDGCONTRPRCGSTATUSTEXT TYPE STRING,
ACMFORMULAUOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IACMPRCGASPCT_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_IACMPRCGASPCT_STR-MANDT sy-vline 
WA_IACMPRCGASPCT_STR-TRADINGCONTRACTNUMBER sy-vline 
WA_IACMPRCGASPCT_STR-TRADINGCONTRACTITEM sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRICINGASPECT sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRICINGASPECTVALUE sy-vline 
WA_IACMPRCGASPCT_STR-TRDGCONTRPRCGASPECTSRCELOTID sy-vline 
WA_IACMPRCGASPCT_STR-TRDGCONTRPRCGASPECTDUMMYLOTID sy-vline 
WA_IACMPRCGASPCT_STR-PRICINGCONDITIONTERM sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRCGCNDNFLATPRICE sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRCGCNDNCUMLTVBASISPRICE sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRCGCNDNCUMLTVBASISCRCY sy-vline 
WA_IACMPRCGASPCT_STR-CONTRACTTRADEQUANTITY sy-vline 
WA_IACMPRCGASPCT_STR-CONTRACTTRADEUNIT sy-vline 
WA_IACMPRCGASPCT_STR-DERIVATIVECONTRSPECIFICATION sy-vline 
WA_IACMPRCGASPCT_STR-ACMPRICINGMARKETIDENTIFIERCODE sy-vline 
WA_IACMPRCGASPCT_STR-DERIVATIVECONTRACTMATURITYCODE sy-vline 
WA_IACMPRCGASPCT_STR-MATURITYKEYDATE sy-vline 
WA_IACMPRCGASPCT_STR-PRCGCNDNTRADINGCONTRCURRENCY sy-vline 
WA_IACMPRCGASPCT_STR-ACMTRDGCONTRPRCGSTATUSTEXT sy-vline 
WA_IACMPRCGASPCT_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.