ABAP Select data from SAP table CDMR_CDMRC_DOCUMENTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDMR_CDMRC_DOCUMENTS
*  INTO TABLE @DATA(IT_CDMR_CDMRC_DOCUMENTS2).
*--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_CDMR_CDMRC_DOCUMENTS INDEX 1 INTO DATA(WA_CDMR_CDMRC_DOCUMENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDMR_CDMRC_DOCUMENTS>-CONTROLLER = 1.
<CDMR_CDMRC_DOCUMENTS>-REFERENCE_BILLING_DOCUMENT = 1.
<CDMR_CDMRC_DOCUMENTS>-REFERENCE_BILLING_DOCUMENT_ITE = 1.
<CDMR_CDMRC_DOCUMENTS>-BILLING_DOCUMENT = 1.
<CDMR_CDMRC_DOCUMENTS>-BILLING_DOCUMENT_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDMR_CDMRC_DOCUMENTS-BILLING_DOCUMENT_ITEM, sy-vline,
  WA_CDMR_CDMRC_DOCUMENTS-SDDOCUMENT_REASON, sy-vline,
  WA_CDMR_CDMRC_DOCUMENTS-SALES_ORGANIZATION, sy-vline,
  WA_CDMR_CDMRC_DOCUMENTS-DISTRIBUTION_CHANNEL, sy-vline,
  WA_CDMR_CDMRC_DOCUMENTS-DIVISION, sy-vline,
  WA_CDMR_CDMRC_DOCUMENTS-BILLING_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDMR_CDMRC_DOCUMENTS 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_CDMR_CDMRC_DOCUMENTS 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_CDMR_CDMRC_DOCUMENTS INTO WA_CDMR_CDMRC_DOCUMENTS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CDMR_CDMRC_DOCUMENTS_STR, 
CONTROLLER TYPE STRING,
REFERENCE_BILLING_DOCUMENT TYPE STRING,
REFERENCE_BILLING_DOCUMENT_ITE TYPE STRING,
BILLING_DOCUMENT TYPE STRING,
BILLING_DOCUMENT_TYPE TYPE STRING,
BILLING_DOCUMENT_ITEM TYPE STRING,
SDDOCUMENT_REASON TYPE STRING,
SALES_ORGANIZATION TYPE STRING,
DISTRIBUTION_CHANNEL TYPE STRING,
DIVISION TYPE STRING,
BILLING_DATE TYPE STRING,
COMPANY_CODE TYPE STRING,
DOCUMENT_REFERENCE_ID TYPE STRING,
FIXED_VALUE_DATE TYPE STRING,
TRANSACTION_CURRENCY TYPE STRING,
CUSTOMER_PAYMENT_TERMS TYPE STRING,
TAX_DEPARTURE_COUNTRY TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION1 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION2 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION3 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION4 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION5 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION6 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION7 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION8 TYPE STRING,
CUSTOMER_TAX_CLASSIFICATION9 TYPE STRING,
VATREGISTRATION TYPE STRING,
MATERIAL TYPE STRING,
BATCH TYPE STRING,
MATERIAL_BY_CUSTOMER TYPE STRING,
BILLING_QUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
NET_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
TAX_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
SALES_DOCUMENT TYPE STRING,
SALES_DOCUMENT_ITEM TYPE STRING,
SALES_DOCUMENT_CATEGORY TYPE STRING,
PRICING_DATE TYPE STRING,
SERVICES_RENDERED_DATE TYPE STRING,
PRICING_ELEMENT TYPE STRING,
LOG TYPE STRING,
CONTROLLER TYPE STRING,
BUSINESS_DOCUMENT_PROCESSING_R TYPE STRING,
MAXIMUM_LOG_ITEM_SEVERITY_CODE TYPE STRING,
ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDMR_CDMRC_DOCUMENTS_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_CDMR_CDMRC_DOCUMENTS_STR-CONTROLLER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-REFERENCE_BILLING_DOCUMENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-REFERENCE_BILLING_DOCUMENT_ITE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BILLING_DOCUMENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BILLING_DOCUMENT_TYPE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BILLING_DOCUMENT_ITEM sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SDDOCUMENT_REASON sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SALES_ORGANIZATION sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-DISTRIBUTION_CHANNEL sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-DIVISION sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BILLING_DATE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-COMPANY_CODE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-DOCUMENT_REFERENCE_ID sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-FIXED_VALUE_DATE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-TRANSACTION_CURRENCY sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_PAYMENT_TERMS sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-TAX_DEPARTURE_COUNTRY sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION1 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION2 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION3 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION4 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION5 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION6 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION7 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION8 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CUSTOMER_TAX_CLASSIFICATION9 sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-VATREGISTRATION sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-MATERIAL sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BATCH sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-MATERIAL_BY_CUSTOMER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BILLING_QUANTITY sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTROLLER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-UNIT_CODE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-NET_AMOUNT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTROLLER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CURRENCY_CODE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-TAX_AMOUNT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTROLLER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CURRENCY_CODE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SALES_DOCUMENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SALES_DOCUMENT_ITEM sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SALES_DOCUMENT_CATEGORY sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-PRICING_DATE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-SERVICES_RENDERED_DATE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-PRICING_ELEMENT sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-LOG sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-CONTROLLER sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-BUSINESS_DOCUMENT_PROCESSING_R sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-MAXIMUM_LOG_ITEM_SEVERITY_CODE sy-vline 
WA_CDMR_CDMRC_DOCUMENTS_STR-ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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