ABAP Select data from SAP table ICAINVDOC_H2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICAINVDOC_H2 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 ICAINVDOC_H2. 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 ICAINVDOC_H2 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_ICAINVDOC_H2 TYPE STANDARD TABLE OF ICAINVDOC_H2,
      WA_ICAINVDOC_H2 TYPE ICAINVDOC_H2,
      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: <ICAINVDOC_H2> TYPE ICAINVDOC_H2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICAINVDOC_H2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICAINVDOC_H2
  INTO TABLE IT_ICAINVDOC_H2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAINVDOC_H2
*  INTO TABLE @DATA(IT_ICAINVDOC_H22).
*--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_ICAINVDOC_H2 INDEX 1 INTO DATA(WA_ICAINVDOC_H22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICAINVDOC_H2 ASSIGNING <ICAINVDOC_H2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAINVDOC_H2>-MANDT = 1.
<ICAINVDOC_H2>-CAINVOICINGDOCUMENT = 1.
<ICAINVDOC_H2>-CAAPPLICATIONAREA = 1.
<ICAINVDOC_H2>-CAINVCGPROCESS = 1.
<ICAINVDOC_H2>-CAINVCGTYPE = 1.

ENDLOOP.

LOOP AT IT_ICAINVDOC_H2 INTO WA_ICAINVDOC_H2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAINVDOC_H2-CAINVCGCATEGORY, sy-vline,
  WA_ICAINVDOC_H2-CAINVCGTECHNICALDOCUMENTTYPE, sy-vline,
  WA_ICAINVDOC_H2-CAINVCGTARGETPROCESS, sy-vline,
  WA_ICAINVDOC_H2-BUSINESSPARTNER, sy-vline,
  WA_ICAINVDOC_H2-CONTRACTACCOUNT, sy-vline,
  WA_ICAINVDOC_H2-CAINVCGMASTERDATATYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAINVDOC_H2 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_ICAINVDOC_H2 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_ICAINVDOC_H2 INTO WA_ICAINVDOC_H2.


*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_ICAINVDOC_H2-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVDOC_H2-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACTACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAINVDOC_H2-CONTRACTACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVDOC_H2-CONTRACTACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALTVCONTRACTACCTFORCOLLVBILLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAINVDOC_H2-ALTVCONTRACTACCTFORCOLLVBILLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVDOC_H2-ALTVCONTRACTACCTFORCOLLVBILLS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CASUBSTITUTEDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAINVDOC_H2-CASUBSTITUTEDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVDOC_H2-CASUBSTITUTEDOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CAPAYMENTFORMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAINVDOC_H2-CAPAYMENTFORMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVDOC_H2-CAPAYMENTFORMNUMBER.
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_ICAINVDOC_H2_STR, 
MANDT TYPE STRING,
CAINVOICINGDOCUMENT TYPE STRING,
CAAPPLICATIONAREA TYPE STRING,
CAINVCGPROCESS TYPE STRING,
CAINVCGTYPE TYPE STRING,
CAINVCGCATEGORY TYPE STRING,
CAINVCGTECHNICALDOCUMENTTYPE TYPE STRING,
CAINVCGTARGETPROCESS TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CAINVCGMASTERDATATYPE TYPE STRING,
ALTVCONTRACTACCTFORCOLLVBILLS TYPE STRING,
CASUBSTITUTEDOCUMENTNUMBER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CAINVCGCREATIONDATE TYPE STRING,
CAINVCGCREATIONTIME TYPE STRING,
CAINVCGDOCCREATIONMODE TYPE STRING,
CAINVCGNMBROFINVOICINGDOCITEMS TYPE STRING,
CARECONCILIATIONKEY TYPE STRING,
CAPOSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
CACASHDISCOUNTDUEDATE TYPE STRING,
CACASHDISCOUNTRATE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAINVCGISDOCUMENTPOSTED TYPE STRING,
CAINVCGISDOCUMENTSIMULATED TYPE STRING,
CAINVCGISDOCUMENTPRELIMINARY TYPE STRING,
CAINVCGPRELIMINARYCATEGORY TYPE STRING,
CAINVCGDOCUMENTREVERSALREASON TYPE STRING,
CAINVCGREVERSALDOCUMENT TYPE STRING,
CAINVCGREVERSEDDOCUMENT TYPE STRING,
CAINVCGCORRECTIONCATEGORY TYPE STRING,
CAINVCGDOCUMENTPRINTDATE TYPE STRING,
CAINVCGDOCISLOCKEDFORPRINTING TYPE STRING,
CAPAYMENTMETHOD TYPE STRING,
CAPAYMENTFORMNUMBER TYPE STRING,
APPLICATIONFORM TYPE STRING,
FORMIDFORATTACHEDPAYMENTMEDIUM TYPE STRING,
CAINVCGDOCUMENTTYPE TYPE STRING,
CAKEYIDENTIFICATION TYPE STRING,
CAOFFICIALDOCUMENTNUMBER TYPE STRING,
CAPARTNERSETTLEMENTRULE TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSPLACE TYPE STRING,
CAINVCGBASEDATE TYPE STRING,
CAINVCGDOCPERIODCATEGORY TYPE STRING,
CAINVCGDOCPERIODDATE TYPE STRING,
CAINVCGDOCPERIODSTARTDATE TYPE STRING,
CADUNNINGCOUNTER TYPE STRING,
CAINVCGDOCHASCHARGEORDISCITEMS TYPE STRING,
CAINVCGDOCHASCONTROLDOC TYPE STRING,
CAINVCGBOLLOTAXPOSTSTATUS TYPE STRING,
CAINVCGDOCISPARTOFLIST TYPE STRING,
CAINVCGDOCHASOBJECTRELATION TYPE STRING,
CAINVCGDOCHASSEPAPRENOTIF TYPE STRING,
CAINVCGDOCEXTERNAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAINVDOC_H2_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_ICAINVDOC_H2_STR-MANDT sy-vline 
WA_ICAINVDOC_H2_STR-CAINVOICINGDOCUMENT sy-vline 
WA_ICAINVDOC_H2_STR-CAAPPLICATIONAREA sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGPROCESS sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGTYPE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGCATEGORY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGTECHNICALDOCUMENTTYPE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGTARGETPROCESS sy-vline 
WA_ICAINVDOC_H2_STR-BUSINESSPARTNER sy-vline 
WA_ICAINVDOC_H2_STR-CONTRACTACCOUNT sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGMASTERDATATYPE sy-vline 
WA_ICAINVDOC_H2_STR-ALTVCONTRACTACCTFORCOLLVBILLS sy-vline 
WA_ICAINVDOC_H2_STR-CASUBSTITUTEDOCUMENTNUMBER sy-vline 
WA_ICAINVDOC_H2_STR-CREATEDBYUSER sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGCREATIONDATE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGCREATIONTIME sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCCREATIONMODE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGNMBROFINVOICINGDOCITEMS sy-vline 
WA_ICAINVDOC_H2_STR-CARECONCILIATIONKEY sy-vline 
WA_ICAINVDOC_H2_STR-CAPOSTINGDATE sy-vline 
WA_ICAINVDOC_H2_STR-DOCUMENTDATE sy-vline 
WA_ICAINVDOC_H2_STR-CANETDUEDATE sy-vline 
WA_ICAINVDOC_H2_STR-CACASHDISCOUNTDUEDATE sy-vline 
WA_ICAINVDOC_H2_STR-CACASHDISCOUNTRATE sy-vline 
WA_ICAINVDOC_H2_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICAINVDOC_H2_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGISDOCUMENTPOSTED sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGISDOCUMENTSIMULATED sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGISDOCUMENTPRELIMINARY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGPRELIMINARYCATEGORY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCUMENTREVERSALREASON sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGREVERSALDOCUMENT sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGREVERSEDDOCUMENT sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGCORRECTIONCATEGORY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCUMENTPRINTDATE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCISLOCKEDFORPRINTING sy-vline 
WA_ICAINVDOC_H2_STR-CAPAYMENTMETHOD sy-vline 
WA_ICAINVDOC_H2_STR-CAPAYMENTFORMNUMBER sy-vline 
WA_ICAINVDOC_H2_STR-APPLICATIONFORM sy-vline 
WA_ICAINVDOC_H2_STR-FORMIDFORATTACHEDPAYMENTMEDIUM sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCUMENTTYPE sy-vline 
WA_ICAINVDOC_H2_STR-CAKEYIDENTIFICATION sy-vline 
WA_ICAINVDOC_H2_STR-CAOFFICIALDOCUMENTNUMBER sy-vline 
WA_ICAINVDOC_H2_STR-CAPARTNERSETTLEMENTRULE sy-vline 
WA_ICAINVDOC_H2_STR-COMPANYCODE sy-vline 
WA_ICAINVDOC_H2_STR-BUSINESSPLACE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGBASEDATE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCPERIODCATEGORY sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCPERIODDATE sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCPERIODSTARTDATE sy-vline 
WA_ICAINVDOC_H2_STR-CADUNNINGCOUNTER sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCHASCHARGEORDISCITEMS sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCHASCONTROLDOC sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGBOLLOTAXPOSTSTATUS sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCISPARTOFLIST sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCHASOBJECTRELATION sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCHASSEPAPRENOTIF sy-vline 
WA_ICAINVDOC_H2_STR-CAINVCGDOCEXTERNAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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