ABAP Select data from SAP table CMPINVOICE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMPINVOICE
*  INTO TABLE @DATA(IT_CMPINVOICE2).
*--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_CMPINVOICE INDEX 1 INTO DATA(WA_CMPINVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMPINVOICE>-MANDT = 1.
<CMPINVOICE>-MASTERPROJECT = 1.
<CMPINVOICE>-BILLINGDOCUMENT = 1.
<CMPINVOICE>-SALESDOCUMENT = 1.
<CMPINVOICE>-SALESDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMPINVOICE-MASTERPROJECTUUID, sy-vline,
  WA_CMPINVOICE-SALESORDER, sy-vline,
  WA_CMPINVOICE-SALESORDERITEM, sy-vline,
  WA_CMPINVOICE-SALESDOCUMENTITEMTEXT, sy-vline,
  WA_CMPINVOICE-BILLINGDOCUMENTTYPE, sy-vline,
  WA_CMPINVOICE-BILLINGDOCUMENTTYPENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMPINVOICE 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_CMPINVOICE 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_CMPINVOICE INTO WA_CMPINVOICE.


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

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMPINVOICE-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPINVOICE-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMPINVOICE-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPINVOICE-SOLDTOPARTY.
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_CMPINVOICE_STR, 
MANDT TYPE STRING,
MASTERPROJECT TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESDOCUMENTITEM TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
SALESDOCUMENTITEMTEXT TYPE STRING,
BILLINGDOCUMENTTYPE TYPE STRING,
BILLINGDOCUMENTTYPENAME TYPE STRING,
SALESORGANIZATION TYPE STRING,
SALESORGANIZATIONNAME TYPE STRING,
MASTERPROJECTNAME TYPE STRING,
CREATIONDATE TYPE STRING,
EXCHANGERATEDATE TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
BILLINGQUANTITY TYPE STRING,
BILLINGQUANTITYUNIT TYPE STRING,
ITEMNETAMOUNTOFBILLINGDOC TYPE STRING,
ITEMGROSSAMOUNTOFBILLINGDOC TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
SALESORDERITEMCONCATENATEDID TYPE STRING,
OVERDUEAMOUNTINDISPLAYCRCY TYPE STRING,
OVERALLBILLINGSTATUS TYPE STRING,
OVERALLBILLINGSTATUSDESC TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CONTROLLINGOBJECTEXTERNALID TYPE STRING,
CONTROLLINGOBJECTDESCRIPTION TYPE STRING,
SOLDTOPARTY TYPE STRING,
CUSTOMERNAME TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
SUBSEQUENTDOCUMENTCATEGORY TYPE STRING,
USERISINVOLVED TYPE STRING,
MASTERPROJECTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMPINVOICE_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_CMPINVOICE_STR-MANDT sy-vline 
WA_CMPINVOICE_STR-MASTERPROJECT sy-vline 
WA_CMPINVOICE_STR-BILLINGDOCUMENT sy-vline 
WA_CMPINVOICE_STR-SALESDOCUMENT sy-vline 
WA_CMPINVOICE_STR-SALESDOCUMENTITEM sy-vline 
WA_CMPINVOICE_STR-MASTERPROJECTUUID sy-vline 
WA_CMPINVOICE_STR-SALESORDER sy-vline 
WA_CMPINVOICE_STR-SALESORDERITEM sy-vline 
WA_CMPINVOICE_STR-SALESDOCUMENTITEMTEXT sy-vline 
WA_CMPINVOICE_STR-BILLINGDOCUMENTTYPE sy-vline 
WA_CMPINVOICE_STR-BILLINGDOCUMENTTYPENAME sy-vline 
WA_CMPINVOICE_STR-SALESORGANIZATION sy-vline 
WA_CMPINVOICE_STR-SALESORGANIZATIONNAME sy-vline 
WA_CMPINVOICE_STR-MASTERPROJECTNAME sy-vline 
WA_CMPINVOICE_STR-CREATIONDATE sy-vline 
WA_CMPINVOICE_STR-EXCHANGERATEDATE sy-vline 
WA_CMPINVOICE_STR-MATERIAL sy-vline 
WA_CMPINVOICE_STR-MATERIALNAME sy-vline 
WA_CMPINVOICE_STR-BILLINGQUANTITY sy-vline 
WA_CMPINVOICE_STR-BILLINGQUANTITYUNIT sy-vline 
WA_CMPINVOICE_STR-ITEMNETAMOUNTOFBILLINGDOC sy-vline 
WA_CMPINVOICE_STR-ITEMGROSSAMOUNTOFBILLINGDOC sy-vline 
WA_CMPINVOICE_STR-TOTALNETAMOUNT sy-vline 
WA_CMPINVOICE_STR-SALESORDERITEMCONCATENATEDID sy-vline 
WA_CMPINVOICE_STR-OVERDUEAMOUNTINDISPLAYCRCY sy-vline 
WA_CMPINVOICE_STR-OVERALLBILLINGSTATUS sy-vline 
WA_CMPINVOICE_STR-OVERALLBILLINGSTATUSDESC sy-vline 
WA_CMPINVOICE_STR-TRANSACTIONCURRENCY sy-vline 
WA_CMPINVOICE_STR-CONTROLLINGOBJECTEXTERNALID sy-vline 
WA_CMPINVOICE_STR-CONTROLLINGOBJECTDESCRIPTION sy-vline 
WA_CMPINVOICE_STR-SOLDTOPARTY sy-vline 
WA_CMPINVOICE_STR-CUSTOMERNAME sy-vline 
WA_CMPINVOICE_STR-SDDOCUMENTCATEGORY sy-vline 
WA_CMPINVOICE_STR-SUBSEQUENTDOCUMENTCATEGORY sy-vline 
WA_CMPINVOICE_STR-USERISINVOLVED sy-vline 
WA_CMPINVOICE_STR-MASTERPROJECTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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