ABAP Select data from SAP table CACMPRCGNOM into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CACMPRCGNOM 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 CACMPRCGNOM. 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 CACMPRCGNOM 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_CACMPRCGNOM TYPE STANDARD TABLE OF CACMPRCGNOM,
      WA_CACMPRCGNOM TYPE CACMPRCGNOM,
      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: <CACMPRCGNOM> TYPE CACMPRCGNOM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACMPRCGNOM
*  INTO TABLE @DATA(IT_CACMPRCGNOM2).
*--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_CACMPRCGNOM INDEX 1 INTO DATA(WA_CACMPRCGNOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACMPRCGNOM>-MANDT = 1.
<CACMPRCGNOM>-CONTRACTNUM = 1.
<CACMPRCGNOM>-TRADINGCONTRACTITEM = 1.
<CACMPRCGNOM>-TRDGCONTRPRCGASPECTSRCELOTID = 1.
<CACMPRCGNOM>-CONFIRMEDNOMINATIONNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACMPRCGNOM-CONFIRMEDNOMINATIONITEM, sy-vline,
  WA_CACMPRCGNOM-CONTRACTITEMASSIGNMENTUUID, sy-vline,
  WA_CACMPRCGNOM-ACMFROMDOCUMENTNUMBER, sy-vline,
  WA_CACMPRCGNOM-APPLICATIONDOCUMENTITEM, sy-vline,
  WA_CACMPRCGNOM-DOCUMENTFROM, sy-vline,
  WA_CACMPRCGNOM-ACMPRICINGASPECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACMPRCGNOM 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_CACMPRCGNOM 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_CACMPRCGNOM INTO WA_CACMPRCGNOM.


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

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

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

*Conversion exit CUNIT, internal->external for field ACTUALSCHEDULEDQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CACMPRCGNOM-ACTUALSCHEDULEDQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACMPRCGNOM-ACTUALSCHEDULEDQUANTITYUNIT.
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_CACMPRCGNOM_STR, 
MANDT TYPE STRING,
CONTRACTNUM TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
TRDGCONTRPRCGASPECTSRCELOTID TYPE STRING,
CONFIRMEDNOMINATIONNUMBER TYPE STRING,
CONFIRMEDNOMINATIONITEM TYPE STRING,
CONTRACTITEMASSIGNMENTUUID TYPE STRING,
ACMFROMDOCUMENTNUMBER TYPE STRING,
APPLICATIONDOCUMENTITEM TYPE STRING,
DOCUMENTFROM TYPE STRING,
ACMPRICINGASPECT TYPE STRING,
ACMPRICINGASPECTVALUE TYPE STRING,
ACMNOMINATIONSCHEDULEDQTY TYPE STRING,
ACMNOMINATIONSCHEDULEDQTYUOM TYPE STRING,
CMMDTYNOMINATIONNUMBER TYPE STRING,
ACMMNTNPRCGNOMINATIONACTUALQTY TYPE STRING,
ACTUALSCHEDULEDQUANTITYUNIT TYPE STRING,
NOMINATIONITEMSTATUS TYPE STRING,
ACMAPPLDOCCONTROPTNDSCHRGDLOC TYPE STRING,
ACMAPPLDOCCONTROPTNLOADLOC TYPE STRING,
ACMPRCGNOMINATIONCONFIRMED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACMPRCGNOM_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_CACMPRCGNOM_STR-MANDT sy-vline 
WA_CACMPRCGNOM_STR-CONTRACTNUM sy-vline 
WA_CACMPRCGNOM_STR-TRADINGCONTRACTITEM sy-vline 
WA_CACMPRCGNOM_STR-TRDGCONTRPRCGASPECTSRCELOTID sy-vline 
WA_CACMPRCGNOM_STR-CONFIRMEDNOMINATIONNUMBER sy-vline 
WA_CACMPRCGNOM_STR-CONFIRMEDNOMINATIONITEM sy-vline 
WA_CACMPRCGNOM_STR-CONTRACTITEMASSIGNMENTUUID sy-vline 
WA_CACMPRCGNOM_STR-ACMFROMDOCUMENTNUMBER sy-vline 
WA_CACMPRCGNOM_STR-APPLICATIONDOCUMENTITEM sy-vline 
WA_CACMPRCGNOM_STR-DOCUMENTFROM sy-vline 
WA_CACMPRCGNOM_STR-ACMPRICINGASPECT sy-vline 
WA_CACMPRCGNOM_STR-ACMPRICINGASPECTVALUE sy-vline 
WA_CACMPRCGNOM_STR-ACMNOMINATIONSCHEDULEDQTY sy-vline 
WA_CACMPRCGNOM_STR-ACMNOMINATIONSCHEDULEDQTYUOM sy-vline 
WA_CACMPRCGNOM_STR-CMMDTYNOMINATIONNUMBER sy-vline 
WA_CACMPRCGNOM_STR-ACMMNTNPRCGNOMINATIONACTUALQTY sy-vline 
WA_CACMPRCGNOM_STR-ACTUALSCHEDULEDQUANTITYUNIT sy-vline 
WA_CACMPRCGNOM_STR-NOMINATIONITEMSTATUS sy-vline 
WA_CACMPRCGNOM_STR-ACMAPPLDOCCONTROPTNDSCHRGDLOC sy-vline 
WA_CACMPRCGNOM_STR-ACMAPPLDOCCONTROPTNLOADLOC sy-vline 
WA_CACMPRCGNOM_STR-ACMPRCGNOMINATIONCONFIRMED sy-vline      INTO ld_text SEPARATED BY SPACE.

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