ABAP Select data from SAP table ICRDTACCTTODOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRDTACCTTODOC
*  INTO TABLE @DATA(IT_ICRDTACCTTODOC2).
*--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_ICRDTACCTTODOC INDEX 1 INTO DATA(WA_ICRDTACCTTODOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRDTACCTTODOC>-MANDT = 1.
<ICRDTACCTTODOC>-BUSINESSPARTNER = 1.
<ICRDTACCTTODOC>-CREDITSEGMENT = 1.
<ICRDTACCTTODOC>-CREDITRISKCLASS = 1.
<ICRDTACCTTODOC>-CRDTMGMTBUSINESSPARTNERGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRDTACCTTODOC-CREDITANALYST, sy-vline,
  WA_ICRDTACCTTODOC-COUNTRY, sy-vline,
  WA_ICRDTACCTTODOC-REGION, sy-vline,
  WA_ICRDTACCTTODOC-DISPLAYCURRENCY, sy-vline,
  WA_ICRDTACCTTODOC-CUSTOMERCREDITEXPOSUREAMOUNT, sy-vline,
  WA_ICRDTACCTTODOC-CUSTOMERCREDITLIMITAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRDTACCTTODOC 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_ICRDTACCTTODOC 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_ICRDTACCTTODOC INTO WA_ICRDTACCTTODOC.


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

*Conversion exit ALPHA, internal->external for field CREDITANALYST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRDTACCTTODOC-CREDITANALYST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRDTACCTTODOC-CREDITANALYST.
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_ICRDTACCTTODOC_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CREDITSEGMENT TYPE STRING,
CREDITRISKCLASS TYPE STRING,
CRDTMGMTBUSINESSPARTNERGROUP TYPE STRING,
CREDITANALYST TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
CUSTOMERCREDITEXPOSUREAMOUNT TYPE STRING,
CUSTOMERCREDITLIMITAMOUNT TYPE STRING,
CREDITACCOUNTRESUBMISSIONDATE TYPE STRING,
BUSINESSPARTNERISCRITICAL TYPE STRING,
CREDITLIMITISZERO TYPE STRING,
CREDITACCOUNTBLOCKREASON TYPE STRING,
NUMBEROFCREDITDECISIONDOCS TYPE STRING,
NUMBEROFCREDITLIMITREQUESTS TYPE STRING,
NUMBEROFRESUBMISSIONS TYPE STRING,
BPHASCREDITDECISIONDOCUMENT TYPE STRING,
BPHASCREDITLIMITREQUEST TYPE STRING,
BPHASRESUBMISSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRDTACCTTODOC_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_ICRDTACCTTODOC_STR-MANDT sy-vline 
WA_ICRDTACCTTODOC_STR-BUSINESSPARTNER sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITSEGMENT sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITRISKCLASS sy-vline 
WA_ICRDTACCTTODOC_STR-CRDTMGMTBUSINESSPARTNERGROUP sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITANALYST sy-vline 
WA_ICRDTACCTTODOC_STR-COUNTRY sy-vline 
WA_ICRDTACCTTODOC_STR-REGION sy-vline 
WA_ICRDTACCTTODOC_STR-DISPLAYCURRENCY sy-vline 
WA_ICRDTACCTTODOC_STR-CUSTOMERCREDITEXPOSUREAMOUNT sy-vline 
WA_ICRDTACCTTODOC_STR-CUSTOMERCREDITLIMITAMOUNT sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITACCOUNTRESUBMISSIONDATE sy-vline 
WA_ICRDTACCTTODOC_STR-BUSINESSPARTNERISCRITICAL sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITLIMITISZERO sy-vline 
WA_ICRDTACCTTODOC_STR-CREDITACCOUNTBLOCKREASON sy-vline 
WA_ICRDTACCTTODOC_STR-NUMBEROFCREDITDECISIONDOCS sy-vline 
WA_ICRDTACCTTODOC_STR-NUMBEROFCREDITLIMITREQUESTS sy-vline 
WA_ICRDTACCTTODOC_STR-NUMBEROFRESUBMISSIONS sy-vline 
WA_ICRDTACCTTODOC_STR-BPHASCREDITDECISIONDOCUMENT sy-vline 
WA_ICRDTACCTTODOC_STR-BPHASCREDITLIMITREQUEST sy-vline 
WA_ICRDTACCTTODOC_STR-BPHASRESUBMISSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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