ABAP Select data from SAP table ESH_L_CADUNNOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_CADUNNOT
*  INTO TABLE @DATA(IT_ESH_L_CADUNNOT2).
*--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_ESH_L_CADUNNOT INDEX 1 INTO DATA(WA_ESH_L_CADUNNOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_CADUNNOT>-MANDT = 1.
<ESH_L_CADUNNOT>-BUSINESSPARTNER = 1.
<ESH_L_CADUNNOT>-CADUNNINGCOUNTER = 1.
<ESH_L_CADUNNOT>-CAMASSRUNDATE = 1.
<ESH_L_CADUNNOT>-CAMASSRUNID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_CADUNNOT-CONTRACTACCOUNT, sy-vline,
  WA_ESH_L_CADUNNOT-BUSINESSAREA, sy-vline,
  WA_ESH_L_CADUNNOT-BUSINESSPARTNER1, sy-vline,
  WA_ESH_L_CADUNNOT-CAALTERNATIVEDUNNINGRECIPIENT, sy-vline,
  WA_ESH_L_CADUNNOT-CAAUTHORIZATIONGROUP, sy-vline,
  WA_ESH_L_CADUNNOT-CADUNNINGBALANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_CADUNNOT 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_ESH_L_CADUNNOT 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_ESH_L_CADUNNOT INTO WA_ESH_L_CADUNNOT.


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

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

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_CADUNNOT-BUSINESSPARTNER1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_CADUNNOT-BUSINESSPARTNER1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CAALTERNATIVEDUNNINGRECIPIENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_CADUNNOT-CAALTERNATIVEDUNNINGRECIPIENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_CADUNNOT-CAALTERNATIVEDUNNINGRECIPIENT.
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_ESH_L_CADUNNOT_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CADUNNINGCOUNTER TYPE STRING,
CAMASSRUNDATE TYPE STRING,
CAMASSRUNID TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
BUSINESSAREA TYPE STRING,
BUSINESSPARTNER1 TYPE STRING,
CAALTERNATIVEDUNNINGRECIPIENT TYPE STRING,
CAAUTHORIZATIONGROUP TYPE STRING,
CADUNNINGBALANCE TYPE STRING,
CADUNNINGINTERESTAMOUNT TYPE STRING,
CADUNNINGLEVEL TYPE STRING,
CADUNNINGLEVELNAME TYPE STRING,
CADUNNINGNOTICEISREVERSED TYPE STRING,
CADUNNINGPROCEDURE TYPE STRING,
CADUNNINGPROCEDURENAME TYPE STRING,
CAISSUEDATE TYPE STRING,
CAPROVIDERCONTRACTAUTHZNGROUP TYPE STRING,
CASTANDARDCOMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
DUNNINGISSUEDATE TYPE STRING,
INDICATORTEXT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_CADUNNOT_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_ESH_L_CADUNNOT_STR-MANDT sy-vline 
WA_ESH_L_CADUNNOT_STR-BUSINESSPARTNER sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGCOUNTER sy-vline 
WA_ESH_L_CADUNNOT_STR-CAMASSRUNDATE sy-vline 
WA_ESH_L_CADUNNOT_STR-CAMASSRUNID sy-vline 
WA_ESH_L_CADUNNOT_STR-CONTRACTACCOUNT sy-vline 
WA_ESH_L_CADUNNOT_STR-BUSINESSAREA sy-vline 
WA_ESH_L_CADUNNOT_STR-BUSINESSPARTNER1 sy-vline 
WA_ESH_L_CADUNNOT_STR-CAALTERNATIVEDUNNINGRECIPIENT sy-vline 
WA_ESH_L_CADUNNOT_STR-CAAUTHORIZATIONGROUP sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGBALANCE sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGINTERESTAMOUNT sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGLEVEL sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGLEVELNAME sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGNOTICEISREVERSED sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGPROCEDURE sy-vline 
WA_ESH_L_CADUNNOT_STR-CADUNNINGPROCEDURENAME sy-vline 
WA_ESH_L_CADUNNOT_STR-CAISSUEDATE sy-vline 
WA_ESH_L_CADUNNOT_STR-CAPROVIDERCONTRACTAUTHZNGROUP sy-vline 
WA_ESH_L_CADUNNOT_STR-CASTANDARDCOMPANYCODE sy-vline 
WA_ESH_L_CADUNNOT_STR-COMPANYCODENAME sy-vline 
WA_ESH_L_CADUNNOT_STR-DUNNINGISSUEDATE sy-vline 
WA_ESH_L_CADUNNOT_STR-INDICATORTEXT sy-vline 
WA_ESH_L_CADUNNOT_STR-TRANSACTIONCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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