ABAP Select data from SAP table CCAINVDOCREV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCAINVDOCREV
*  INTO TABLE @DATA(IT_CCAINVDOCREV2).
*--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_CCAINVDOCREV INDEX 1 INTO DATA(WA_CCAINVDOCREV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCAINVDOCREV>-MANDT = 1.
<CCAINVDOCREV>-CAINVOICINGDOCUMENT = 1.
<CCAINVDOCREV>-CARVSLTSK = 1.
<CCAINVDOCREV>-CAREVERSALREQUESTSTATUS = 1.
<CCAINVDOCREV>-CAINVCGDOCUMENTREVERSALREASON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCAINVDOCREV-CAREVERSALREQUESTDATE, sy-vline,
  WA_CCAINVDOCREV-CAINVCGTYPE, sy-vline,
  WA_CCAINVDOCREV-CAINVCGPROCESS, sy-vline,
  WA_CCAINVDOCREV-CAINVCGCATEGORY, sy-vline,
  WA_CCAINVDOCREV-CREATEDBYUSER, sy-vline,
  WA_CCAINVDOCREV-CREATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCAINVDOCREV 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_CCAINVDOCREV 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_CCAINVDOCREV INTO WA_CCAINVDOCREV.


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

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

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

*Conversion exit ALPHA, internal->external for field CACONTRACTACCOUNTDOCRLVT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCAINVDOCREV-CACONTRACTACCOUNTDOCRLVT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCAINVDOCREV-CACONTRACTACCOUNTDOCRLVT.
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_CCAINVDOCREV_STR, 
MANDT TYPE STRING,
CAINVOICINGDOCUMENT TYPE STRING,
CARVSLTSK TYPE STRING,
CAREVERSALREQUESTSTATUS TYPE STRING,
CAINVCGDOCUMENTREVERSALREASON TYPE STRING,
CAREVERSALREQUESTDATE TYPE STRING,
CAINVCGTYPE TYPE STRING,
CAINVCGPROCESS TYPE STRING,
CAINVCGCATEGORY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CABUSINESSPARTNERDOCRLVT TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CACONTRACTACCOUNTDOCRLVT TYPE STRING,
CAINVCGMASTERDATATYPE TYPE STRING,
CAINVCGCREATIONDATE TYPE STRING,
CAINVCGCREATIONTIME TYPE STRING,
CAINVCGDOCPERIODCATEGORY TYPE STRING,
CAINVCGDOCPERIODDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CREATIONTIME TYPE STRING,
CADELETIONDATE TYPE STRING,
CAINVCGDOCREVERSALREASONTEXT TYPE STRING,
CAREVERSALREQUESTSTATUSTEXT TYPE STRING,
CAINVCGTYPETEXT TYPE STRING,
CAINVCGPROCESSTEXT TYPE STRING,
CAINVCGCATEGORYTEXT TYPE STRING,
CAINVCGMASTERDATATYPETEXT TYPE STRING,
CAINVCGPERIODCATTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCAINVDOCREV_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_CCAINVDOCREV_STR-MANDT sy-vline 
WA_CCAINVDOCREV_STR-CAINVOICINGDOCUMENT sy-vline 
WA_CCAINVDOCREV_STR-CARVSLTSK sy-vline 
WA_CCAINVDOCREV_STR-CAREVERSALREQUESTSTATUS sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGDOCUMENTREVERSALREASON sy-vline 
WA_CCAINVDOCREV_STR-CAREVERSALREQUESTDATE sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGTYPE sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGPROCESS sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGCATEGORY sy-vline 
WA_CCAINVDOCREV_STR-CREATEDBYUSER sy-vline 
WA_CCAINVDOCREV_STR-CREATIONDATE sy-vline 
WA_CCAINVDOCREV_STR-BUSINESSPARTNER sy-vline 
WA_CCAINVDOCREV_STR-CABUSINESSPARTNERDOCRLVT sy-vline 
WA_CCAINVDOCREV_STR-CONTRACTACCOUNT sy-vline 
WA_CCAINVDOCREV_STR-CACONTRACTACCOUNTDOCRLVT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGMASTERDATATYPE sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGCREATIONDATE sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGCREATIONTIME sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGDOCPERIODCATEGORY sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGDOCPERIODDATE sy-vline 
WA_CCAINVDOCREV_STR-CANETDUEDATE sy-vline 
WA_CCAINVDOCREV_STR-TRANSACTIONCURRENCY sy-vline 
WA_CCAINVDOCREV_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_CCAINVDOCREV_STR-CREATIONTIME sy-vline 
WA_CCAINVDOCREV_STR-CADELETIONDATE sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGDOCREVERSALREASONTEXT sy-vline 
WA_CCAINVDOCREV_STR-CAREVERSALREQUESTSTATUSTEXT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGTYPETEXT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGPROCESSTEXT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGCATEGORYTEXT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGMASTERDATATYPETEXT sy-vline 
WA_CCAINVDOCREV_STR-CAINVCGPERIODCATTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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