ABAP Select data from SAP table PCAINVDOC_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCAINVDOC_I
*  INTO TABLE @DATA(IT_PCAINVDOC_I2).
*--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_PCAINVDOC_I INDEX 1 INTO DATA(WA_PCAINVDOC_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCAINVDOC_I>-MANDT = 1.
<PCAINVDOC_I>-CAINVOICINGDOCUMENT = 1.
<PCAINVDOC_I>-CAINVCGDOCITEM = 1.
<PCAINVDOC_I>-CAINVCGDOCUMENTITEMTYPE = 1.
<PCAINVDOC_I>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCAINVDOC_I-DIVISION, sy-vline,
  WA_PCAINVDOC_I-CACONTRACT, sy-vline,
  WA_PCAINVDOC_I-CAPROVIDERCONTRACTITEMNUMBER, sy-vline,
  WA_PCAINVDOC_I-CASUBAPPLICATION, sy-vline,
  WA_PCAINVDOC_I-CAINVCGITMALTVBUSINESSPARTNER, sy-vline,
  WA_PCAINVDOC_I-CAINVCGITMALTVCONTRACTACCOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCAINVDOC_I 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_PCAINVDOC_I 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_PCAINVDOC_I INTO WA_PCAINVDOC_I.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CAINVCGSOURCEDOCUMENTITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCAINVDOC_I-CAINVCGSOURCEDOCUMENTITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAINVDOC_I-CAINVCGSOURCEDOCUMENTITEM.
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_PCAINVDOC_I_STR, 
MANDT TYPE STRING,
CAINVOICINGDOCUMENT TYPE STRING,
CAINVCGDOCITEM TYPE STRING,
CAINVCGDOCUMENTITEMTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
DIVISION TYPE STRING,
CACONTRACT TYPE STRING,
CAPROVIDERCONTRACTITEMNUMBER TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CAINVCGITMALTVBUSINESSPARTNER TYPE STRING,
CAINVCGITMALTVCONTRACTACCOUNT TYPE STRING,
CAINVCGDOCITMALTVMDCAT TYPE STRING,
CAMAINTRANSACTION TYPE STRING,
CASUBTRANSACTION TYPE STRING,
CAISDOCITEMSIMULATED TYPE STRING,
CAINVCGDOCITEMISREVERSAL TYPE STRING,
CAINVCGISINFINALAMT TYPE STRING,
CAINVCGISITEMPOSTINGRELEVANT TYPE STRING,
CAINVCGISNOTBPRELEVANT TYPE STRING,
CAINVCGISITEMPRINTINGRELEVANT TYPE STRING,
CAINVCGSUBSTITUTEGROUPPRINTING TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CACURRENCYSOURCEDOCUMENT TYPE STRING,
CAINVCGSOURCEDOCUMENTAMOUNT TYPE STRING,
CAGROUPINGCURRENCYTRANSLATION TYPE STRING,
CAACCOUNTDETERMINATIONCODE TYPE STRING,
BUSINESSPLACE TYPE STRING,
BUSINESSAREA TYPE STRING,
CATAXISINCLUDED TYPE STRING,
CATAXDETNTYPE TYPE STRING,
CAINVCGTAXGROUPINGKEY TYPE STRING,
CAOTHERTAXCODE TYPE STRING,
TAXCODE TYPE STRING,
CATAXDETERMINATIONCODE TYPE STRING,
TAXJURISDICTION TYPE STRING,
CATRANSACTIONKEYACCOUNTDETN TYPE STRING,
CACONDITIONTYPE TYPE STRING,
CATAXRATEINPERCENT TYPE STRING,
TAXCOUNTRY TYPE STRING,
CATAXDATE TYPE STRING,
CATAXBASEAMOUNT TYPE STRING,
CATAXAMOUNTINTRANSCURRENCY TYPE STRING,
CATAXPORTIONINTRANSCURRENCY TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
CAISDOWNPAYMENTREQUEST TYPE STRING,
CASTATISTICALITEMCODE TYPE STRING,
CAINVCGOFFSETTINGGROUP TYPE STRING,
CAINVCGDFRRDREVENUESTATUS TYPE STRING,
CAISREVENUEACCOUNTINGRELEVANT TYPE STRING,
CAINVCGREVENUEGROUPING TYPE STRING,
CAREVENUEACCOUNTINGSERVICETYPE TYPE STRING,
CAINVCGACCRUALPOSTINGTYPE TYPE STRING,
CAISPREPAID TYPE STRING,
UNITOFMEASURE TYPE STRING,
QUANTITY TYPE STRING,
CANETDUEDATE TYPE STRING,
CACASHDISCOUNTDUEDATE TYPE STRING,
CACASHDISCOUNTRATE TYPE STRING,
CAINVCGDOCITEMDEFSTATUS TYPE STRING,
CAITEMPERIODSTARTDATE TYPE STRING,
CAITEMPERIODENDDATE TYPE STRING,
CAINVCGREFPOSTINGDOCTYPE TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CAGROUPINGKEYDOCUMENTITEMS TYPE STRING,
CAINVCGGROUPINGKEY TYPE STRING,
CACLEARINGDOCUMENTNUMBER TYPE STRING,
CACLEARINGAMOUNTINTRANSCRCY TYPE STRING,
CAINVCGDOCITEMCRTNMETHOD TYPE STRING,
CAINVCGFUNCTION TYPE STRING,
CAINVCGSOURCEDOCUMENTCAT TYPE STRING,
CAINVCGSOURCEDOCUMENTNUMBER TYPE STRING,
CAINVCGDOCITEMSOURCEITMCAT TYPE STRING,
CAINVCGSOURCEDOCUMENTITEM TYPE STRING,
CABLLBLEITMDISCOUNTKEY TYPE STRING,
CABLLBLEITMDISCOUNTVERSION TYPE STRING,
CAINVCGCORRECTIONCATEGORY TYPE STRING,
CAAPPLICATIONAREA TYPE STRING,
TAXCALCULATIONPROCEDURE TYPE STRING,
COMPANYCODECOUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCAINVDOC_I_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_PCAINVDOC_I_STR-MANDT sy-vline 
WA_PCAINVDOC_I_STR-CAINVOICINGDOCUMENT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITEM sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCUMENTITEMTYPE sy-vline 
WA_PCAINVDOC_I_STR-COMPANYCODE sy-vline 
WA_PCAINVDOC_I_STR-DIVISION sy-vline 
WA_PCAINVDOC_I_STR-CACONTRACT sy-vline 
WA_PCAINVDOC_I_STR-CAPROVIDERCONTRACTITEMNUMBER sy-vline 
WA_PCAINVDOC_I_STR-CASUBAPPLICATION sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGITMALTVBUSINESSPARTNER sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGITMALTVCONTRACTACCOUNT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITMALTVMDCAT sy-vline 
WA_PCAINVDOC_I_STR-CAMAINTRANSACTION sy-vline 
WA_PCAINVDOC_I_STR-CASUBTRANSACTION sy-vline 
WA_PCAINVDOC_I_STR-CAISDOCITEMSIMULATED sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITEMISREVERSAL sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGISINFINALAMT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGISITEMPOSTINGRELEVANT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGISNOTBPRELEVANT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGISITEMPRINTINGRELEVANT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGSUBSTITUTEGROUPPRINTING sy-vline 
WA_PCAINVDOC_I_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCAINVDOC_I_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCAINVDOC_I_STR-CACURRENCYSOURCEDOCUMENT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGSOURCEDOCUMENTAMOUNT sy-vline 
WA_PCAINVDOC_I_STR-CAGROUPINGCURRENCYTRANSLATION sy-vline 
WA_PCAINVDOC_I_STR-CAACCOUNTDETERMINATIONCODE sy-vline 
WA_PCAINVDOC_I_STR-BUSINESSPLACE sy-vline 
WA_PCAINVDOC_I_STR-BUSINESSAREA sy-vline 
WA_PCAINVDOC_I_STR-CATAXISINCLUDED sy-vline 
WA_PCAINVDOC_I_STR-CATAXDETNTYPE sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGTAXGROUPINGKEY sy-vline 
WA_PCAINVDOC_I_STR-CAOTHERTAXCODE sy-vline 
WA_PCAINVDOC_I_STR-TAXCODE sy-vline 
WA_PCAINVDOC_I_STR-CATAXDETERMINATIONCODE sy-vline 
WA_PCAINVDOC_I_STR-TAXJURISDICTION sy-vline 
WA_PCAINVDOC_I_STR-CATRANSACTIONKEYACCOUNTDETN sy-vline 
WA_PCAINVDOC_I_STR-CACONDITIONTYPE sy-vline 
WA_PCAINVDOC_I_STR-CATAXRATEINPERCENT sy-vline 
WA_PCAINVDOC_I_STR-TAXCOUNTRY sy-vline 
WA_PCAINVDOC_I_STR-CATAXDATE sy-vline 
WA_PCAINVDOC_I_STR-CATAXBASEAMOUNT sy-vline 
WA_PCAINVDOC_I_STR-CATAXAMOUNTINTRANSCURRENCY sy-vline 
WA_PCAINVDOC_I_STR-CATAXPORTIONINTRANSCURRENCY sy-vline 
WA_PCAINVDOC_I_STR-WITHHOLDINGTAXCODE sy-vline 
WA_PCAINVDOC_I_STR-CAISDOWNPAYMENTREQUEST sy-vline 
WA_PCAINVDOC_I_STR-CASTATISTICALITEMCODE sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGOFFSETTINGGROUP sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDFRRDREVENUESTATUS sy-vline 
WA_PCAINVDOC_I_STR-CAISREVENUEACCOUNTINGRELEVANT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGREVENUEGROUPING sy-vline 
WA_PCAINVDOC_I_STR-CAREVENUEACCOUNTINGSERVICETYPE sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGACCRUALPOSTINGTYPE sy-vline 
WA_PCAINVDOC_I_STR-CAISPREPAID sy-vline 
WA_PCAINVDOC_I_STR-UNITOFMEASURE sy-vline 
WA_PCAINVDOC_I_STR-QUANTITY sy-vline 
WA_PCAINVDOC_I_STR-CANETDUEDATE sy-vline 
WA_PCAINVDOC_I_STR-CACASHDISCOUNTDUEDATE sy-vline 
WA_PCAINVDOC_I_STR-CACASHDISCOUNTRATE sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITEMDEFSTATUS sy-vline 
WA_PCAINVDOC_I_STR-CAITEMPERIODSTARTDATE sy-vline 
WA_PCAINVDOC_I_STR-CAITEMPERIODENDDATE sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGREFPOSTINGDOCTYPE sy-vline 
WA_PCAINVDOC_I_STR-CADOCUMENTNUMBER sy-vline 
WA_PCAINVDOC_I_STR-CAGROUPINGKEYDOCUMENTITEMS sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGGROUPINGKEY sy-vline 
WA_PCAINVDOC_I_STR-CACLEARINGDOCUMENTNUMBER sy-vline 
WA_PCAINVDOC_I_STR-CACLEARINGAMOUNTINTRANSCRCY sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITEMCRTNMETHOD sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGFUNCTION sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGSOURCEDOCUMENTCAT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGSOURCEDOCUMENTNUMBER sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGDOCITEMSOURCEITMCAT sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGSOURCEDOCUMENTITEM sy-vline 
WA_PCAINVDOC_I_STR-CABLLBLEITMDISCOUNTKEY sy-vline 
WA_PCAINVDOC_I_STR-CABLLBLEITMDISCOUNTVERSION sy-vline 
WA_PCAINVDOC_I_STR-CAINVCGCORRECTIONCATEGORY sy-vline 
WA_PCAINVDOC_I_STR-CAAPPLICATIONAREA sy-vline 
WA_PCAINVDOC_I_STR-TAXCALCULATIONPROCEDURE sy-vline 
WA_PCAINVDOC_I_STR-COMPANYCODECOUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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