ABAP Select data from SAP table CUSWHLDGTXITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CUSWHLDGTXITM
*  INTO TABLE @DATA(IT_CUSWHLDGTXITM2).
*--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_CUSWHLDGTXITM INDEX 1 INTO DATA(WA_CUSWHLDGTXITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CUSWHLDGTXITM>-MANDT = 1.
<CUSWHLDGTXITM>-COMPANYCODE = 1.
<CUSWHLDGTXITM>-ACCOUNTINGDOCUMENT = 1.
<CUSWHLDGTXITM>-FISCALYEAR = 1.
<CUSWHLDGTXITM>-WITHHOLDINGTAXTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CUSWHLDGTXITM-WITHHOLDINGTAXCODE, sy-vline,
  WA_CUSWHLDGTXITM-POSTINGDATE, sy-vline,
  WA_CUSWHLDGTXITM-DOCUMENTDATE, sy-vline,
  WA_CUSWHLDGTXITM-CLEARINGDATE, sy-vline,
  WA_CUSWHLDGTXITM-REPORTINGDATE, sy-vline,
  WA_CUSWHLDGTXITM-TAXNUMBER1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CUSWHLDGTXITM 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_CUSWHLDGTXITM 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_CUSWHLDGTXITM INTO WA_CUSWHLDGTXITM.


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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CUSWHLDGTXITM-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CUSWHLDGTXITM-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field DEBTOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CUSWHLDGTXITM-DEBTOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CUSWHLDGTXITM-DEBTOR.
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_CUSWHLDGTXITM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
WITHHOLDINGTAXTYPE TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CLEARINGDATE TYPE STRING,
REPORTINGDATE TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
BUSINESSPLACE TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
WHLDGTAXDOCUMENTTYPE TYPE STRING,
CLEARINGACCOUNTINGDOCUMENT TYPE STRING,
ISREVERSED TYPE STRING,
CREDITOR TYPE STRING,
DEBTOR TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CUSWHLDGTXITM_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_CUSWHLDGTXITM_STR-MANDT sy-vline 
WA_CUSWHLDGTXITM_STR-COMPANYCODE sy-vline 
WA_CUSWHLDGTXITM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_CUSWHLDGTXITM_STR-FISCALYEAR sy-vline 
WA_CUSWHLDGTXITM_STR-WITHHOLDINGTAXTYPE sy-vline 
WA_CUSWHLDGTXITM_STR-WITHHOLDINGTAXCODE sy-vline 
WA_CUSWHLDGTXITM_STR-POSTINGDATE sy-vline 
WA_CUSWHLDGTXITM_STR-DOCUMENTDATE sy-vline 
WA_CUSWHLDGTXITM_STR-CLEARINGDATE sy-vline 
WA_CUSWHLDGTXITM_STR-REPORTINGDATE sy-vline 
WA_CUSWHLDGTXITM_STR-TAXNUMBER1 sy-vline 
WA_CUSWHLDGTXITM_STR-TAXNUMBER2 sy-vline 
WA_CUSWHLDGTXITM_STR-BUSINESSPLACE sy-vline 
WA_CUSWHLDGTXITM_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_CUSWHLDGTXITM_STR-WHLDGTAXDOCUMENTTYPE sy-vline 
WA_CUSWHLDGTXITM_STR-CLEARINGACCOUNTINGDOCUMENT sy-vline 
WA_CUSWHLDGTXITM_STR-ISREVERSED sy-vline 
WA_CUSWHLDGTXITM_STR-CREDITOR sy-vline 
WA_CUSWHLDGTXITM_STR-DEBTOR sy-vline 
WA_CUSWHLDGTXITM_STR-STATRYRPTGENTITY sy-vline 
WA_CUSWHLDGTXITM_STR-STATRYRPTCATEGORY sy-vline 
WA_CUSWHLDGTXITM_STR-STATRYRPTRUNID sy-vline 
WA_CUSWHLDGTXITM_STR-STARTDATE sy-vline 
WA_CUSWHLDGTXITM_STR-ENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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