ABAP Select data from SAP table CCUSTPROJINVC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCUSTPROJINVC
*  INTO TABLE @DATA(IT_CCUSTPROJINVC2).
*--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_CCUSTPROJINVC INDEX 1 INTO DATA(WA_CCUSTPROJINVC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCUSTPROJINVC>-MANDT = 1.
<CCUSTPROJINVC>-CUSTOMERPROJECT = 1.
<CCUSTPROJINVC>-CUSTOMERPROJECTITEM = 1.
<CCUSTPROJINVC>-BILLINGDOCUMENT = 1.
<CCUSTPROJINVC>-BILLINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCUSTPROJINVC-BILLINGDOCUMENTITEMTEXT, sy-vline,
  WA_CCUSTPROJINVC-MATERIAL, sy-vline,
  WA_CCUSTPROJINVC-BILLINGQUANTITY, sy-vline,
  WA_CCUSTPROJINVC-BILLINGQUANTITYUNIT, sy-vline,
  WA_CCUSTPROJINVC-NETAMOUNT, sy-vline,
  WA_CCUSTPROJINVC-TRANSACTIONCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCUSTPROJINVC 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_CCUSTPROJINVC 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_CCUSTPROJINVC INTO WA_CCUSTPROJINVC.


*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_CCUSTPROJINVC-BILLINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCUSTPROJINVC-BILLINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCUSTPROJINVC-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCUSTPROJINVC-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_CCUSTPROJINVC_STR, 
MANDT TYPE STRING,
CUSTOMERPROJECT TYPE STRING,
CUSTOMERPROJECTITEM TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
BILLINGDOCUMENTITEM TYPE STRING,
BILLINGDOCUMENTITEMTEXT TYPE STRING,
MATERIAL TYPE STRING,
BILLINGQUANTITY TYPE STRING,
BILLINGQUANTITYUNIT TYPE STRING,
NETAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
SOLDTOPARTY TYPE STRING,
OVERALLBILLINGSTATUS TYPE STRING,
BILLINGDOCUMENTDATE TYPE STRING,
CUSTOMERPAYMENTTERMS TYPE STRING,
ADDITIONALVALUEDAYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCUSTPROJINVC_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_CCUSTPROJINVC_STR-MANDT sy-vline 
WA_CCUSTPROJINVC_STR-CUSTOMERPROJECT sy-vline 
WA_CCUSTPROJINVC_STR-CUSTOMERPROJECTITEM sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGDOCUMENT sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGDOCUMENTITEM sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGDOCUMENTITEMTEXT sy-vline 
WA_CCUSTPROJINVC_STR-MATERIAL sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGQUANTITY sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGQUANTITYUNIT sy-vline 
WA_CCUSTPROJINVC_STR-NETAMOUNT sy-vline 
WA_CCUSTPROJINVC_STR-TRANSACTIONCURRENCY sy-vline 
WA_CCUSTPROJINVC_STR-SOLDTOPARTY sy-vline 
WA_CCUSTPROJINVC_STR-OVERALLBILLINGSTATUS sy-vline 
WA_CCUSTPROJINVC_STR-BILLINGDOCUMENTDATE sy-vline 
WA_CCUSTPROJINVC_STR-CUSTOMERPAYMENTTERMS sy-vline 
WA_CCUSTPROJINVC_STR-ADDITIONALVALUEDAYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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