ABAP Select data from SAP table CINVLISTWL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CINVLISTWL
*  INTO TABLE @DATA(IT_CINVLISTWL2).
*--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_CINVLISTWL INDEX 1 INTO DATA(WA_CINVLISTWL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CINVLISTWL>-MANDT = 1.
<CINVLISTWL>-INVOICELIST = 1.
<CINVLISTWL>-PAYERPARTY = 1.
<CINVLISTWL>-PAYERPARTYNAME = 1.
<CINVLISTWL>-PAYERPARTYADDITIONALNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CINVLISTWL-BILLINGDOCUMENTDATE, sy-vline,
  WA_CINVLISTWL-TOTALNETAMOUNT, sy-vline,
  WA_CINVLISTWL-TOTALTAXAMOUNT, sy-vline,
  WA_CINVLISTWL-TRANSACTIONCURRENCY, sy-vline,
  WA_CINVLISTWL-COMPANYCODE, sy-vline,
  WA_CINVLISTWL-SALESORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CINVLISTWL 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_CINVLISTWL 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_CINVLISTWL INTO WA_CINVLISTWL.


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

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

*Conversion exit ALPHA, internal->external for field CANCELLEDBILLINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CINVLISTWL-CANCELLEDBILLINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CINVLISTWL-CANCELLEDBILLINGDOCUMENT.
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_CINVLISTWL_STR, 
MANDT TYPE STRING,
INVOICELIST TYPE STRING,
PAYERPARTY TYPE STRING,
PAYERPARTYNAME TYPE STRING,
PAYERPARTYADDITIONALNAME TYPE STRING,
BILLINGDOCUMENTDATE TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TOTALTAXAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
COMPANYCODE TYPE STRING,
SALESORGANIZATION TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
CANCELLEDBILLINGDOCUMENT TYPE STRING,
ACCOUNTINGTRANSFERSTATUS TYPE STRING,
BILLINGDOCUMENTTYPE TYPE STRING,
TOTALREMUNERATIONNETAMOUNT TYPE STRING,
TOTALREMUNERATIONTAXAMOUNT TYPE STRING,
TOTALGROSSAMOUNT TYPE STRING,
BILLINGDOCUMENTTYPENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CINVLISTWL_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_CINVLISTWL_STR-MANDT sy-vline 
WA_CINVLISTWL_STR-INVOICELIST sy-vline 
WA_CINVLISTWL_STR-PAYERPARTY sy-vline 
WA_CINVLISTWL_STR-PAYERPARTYNAME sy-vline 
WA_CINVLISTWL_STR-PAYERPARTYADDITIONALNAME sy-vline 
WA_CINVLISTWL_STR-BILLINGDOCUMENTDATE sy-vline 
WA_CINVLISTWL_STR-TOTALNETAMOUNT sy-vline 
WA_CINVLISTWL_STR-TOTALTAXAMOUNT sy-vline 
WA_CINVLISTWL_STR-TRANSACTIONCURRENCY sy-vline 
WA_CINVLISTWL_STR-COMPANYCODE sy-vline 
WA_CINVLISTWL_STR-SALESORGANIZATION sy-vline 
WA_CINVLISTWL_STR-DOCUMENTREFERENCEID sy-vline 
WA_CINVLISTWL_STR-CANCELLEDBILLINGDOCUMENT sy-vline 
WA_CINVLISTWL_STR-ACCOUNTINGTRANSFERSTATUS sy-vline 
WA_CINVLISTWL_STR-BILLINGDOCUMENTTYPE sy-vline 
WA_CINVLISTWL_STR-TOTALREMUNERATIONNETAMOUNT sy-vline 
WA_CINVLISTWL_STR-TOTALREMUNERATIONTAXAMOUNT sy-vline 
WA_CINVLISTWL_STR-TOTALGROSSAMOUNT sy-vline 
WA_CINVLISTWL_STR-BILLINGDOCUMENTTYPENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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