ABAP Select data from SAP table NFE_CLOUD_REQ_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NFE_CLOUD_REQ_ITEM
*  INTO TABLE @DATA(IT_NFE_CLOUD_REQ_ITEM2).
*--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_NFE_CLOUD_REQ_ITEM INDEX 1 INTO DATA(WA_NFE_CLOUD_REQ_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NFE_CLOUD_REQ_ITEM>-ITEM_NUMBER = 1.
<NFE_CLOUD_REQ_ITEM>-ITEM_CODE = 1.
<NFE_CLOUD_REQ_ITEM>-ITEM_DESCRIPTION = 1.
<NFE_CLOUD_REQ_ITEM>-STATISTICAL = 1.
<NFE_CLOUD_REQ_ITEM>-QUANTITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NFE_CLOUD_REQ_ITEM-UNIT_OF_MEASURE, sy-vline,
  WA_NFE_CLOUD_REQ_ITEM-TRIBUTARY_QUANTITY, sy-vline,
  WA_NFE_CLOUD_REQ_ITEM-TRIBUTARY_UNIT_OF_MEASURE, sy-vline,
  WA_NFE_CLOUD_REQ_ITEM-FINAL_CONSUMER_RATE, sy-vline,
  WA_NFE_CLOUD_REQ_ITEM-PERCENTAGE_OF_TAX_BURDEN, sy-vline,
  WA_NFE_CLOUD_REQ_ITEM-SOURCE_OF_TAX_BURDEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NFE_CLOUD_REQ_ITEM 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_NFE_CLOUD_REQ_ITEM 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_NFE_CLOUD_REQ_ITEM INTO WA_NFE_CLOUD_REQ_ITEM.


*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_NFE_CLOUD_REQ_ITEM_STR, 
ITEM_NUMBER TYPE STRING,
ITEM_CODE TYPE STRING,
ITEM_DESCRIPTION TYPE STRING,
STATISTICAL TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
TRIBUTARY_QUANTITY TYPE STRING,
TRIBUTARY_UNIT_OF_MEASURE TYPE STRING,
FINAL_CONSUMER_RATE TYPE STRING,
PERCENTAGE_OF_TAX_BURDEN TYPE STRING,
SOURCE_OF_TAX_BURDEN TYPE STRING,
MATERIAL_ORIGIN TYPE STRING,
PLANT TYPE STRING,
PRODUCER_CNPJ TYPE STRING,
RELEVANT_SCALE_INDICATOR TYPE STRING,
GROSS_REVENUE_SOCIAL_SECURITY TYPE STRING,
DESTINATION_CATEGORY TYPE STRING,
PURCHASE_ORDER TYPE STRING,
PURCHASE_ORDER_ITEM TYPE STRING,
CLASSIFICATION TYPE STRING,
OPERATION_CLASSIFICATION TYPE STRING,
OPERATION_CLASSIFICATION_DESC TYPE STRING,
INTERNATIONAL_ARTICLE_NUMBER TYPE STRING,
TRIBUTARY_INTERNATIONAL_ARTIC TYPE STRING,
STATE_FISCAL_BENEFIT_CODE TYPE STRING,
FCI_NUMBER TYPE STRING,
VALUES TYPE STRING,
NET_UNIT_PRICE TYPE STRING,
NET_VALUE TYPE STRING,
GROSS_UNIT_PRICE TYPE STRING,
GROSS_VALUE TYPE STRING,
DISCOUNT_VALUE TYPE STRING,
FREIGHT_VALUE TYPE STRING,
INSURANCE_VALUE TYPE STRING,
EXPENSES_VALUE TYPE STRING,
STATISTICAL_AMOUNT TYPE STRING,
APPROXIMATE_TAX_VALUE TYPE STRING,
SERVICE TYPE STRING,
NOMENCLATURE_SERVICES_CODE TYPE STRING,
EFD_REINF_SERVICE_TYPE_CODE TYPE STRING,
LC_SERVICE_TYPE_CODE TYPE STRING,
SERVICE_PROCESS_NUMBER TYPE STRING,
MUNICIPAL_FISCAL_BENEFIT_CODE TYPE STRING,
REFERENCE TYPE STRING,
ITEM_NUMBER TYPE STRING,
FISCAL_DOCUMENT_NUMBER TYPE STRING,
DOCUMENT_NUMBER TYPE STRING,
DOCUMENT_KEY TYPE STRING,
DOCUMENT_PROVISORY_NUMBER TYPE STRING,
DOCUMENT_SERIES TYPE STRING,
DOCUMENT_SUBSERIES TYPE STRING,
DOCUMENT_MODEL TYPE STRING,
DOCUMENT_TYPE TYPE STRING,
ENVIRONMENT_TYPE TYPE STRING,
POST_DATE TYPE STRING,
ISSUE_DATE TYPE STRING,
ISSUE_TIME TYPE STRING,
TIME_ZONE TYPE STRING,
APPLICATION_VERSION TYPE STRING,
EXTENSION TYPE STRING,
TAXES TYPE STRING,
BADI_FIELDS TYPE STRING,
EXTENSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NFE_CLOUD_REQ_ITEM_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_NFE_CLOUD_REQ_ITEM_STR-ITEM_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ITEM_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ITEM_DESCRIPTION sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-STATISTICAL sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-QUANTITY sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-UNIT_OF_MEASURE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-TRIBUTARY_QUANTITY sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-TRIBUTARY_UNIT_OF_MEASURE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-FINAL_CONSUMER_RATE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-PERCENTAGE_OF_TAX_BURDEN sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-SOURCE_OF_TAX_BURDEN sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-MATERIAL_ORIGIN sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-PLANT sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-PRODUCER_CNPJ sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-RELEVANT_SCALE_INDICATOR sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-GROSS_REVENUE_SOCIAL_SECURITY sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DESTINATION_CATEGORY sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-PURCHASE_ORDER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-PURCHASE_ORDER_ITEM sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-CLASSIFICATION sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-OPERATION_CLASSIFICATION sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-OPERATION_CLASSIFICATION_DESC sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-INTERNATIONAL_ARTICLE_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-TRIBUTARY_INTERNATIONAL_ARTIC sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-STATE_FISCAL_BENEFIT_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-FCI_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-VALUES sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-NET_UNIT_PRICE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-NET_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-GROSS_UNIT_PRICE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-GROSS_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DISCOUNT_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-FREIGHT_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-INSURANCE_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-EXPENSES_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-STATISTICAL_AMOUNT sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-APPROXIMATE_TAX_VALUE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-SERVICE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-NOMENCLATURE_SERVICES_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-EFD_REINF_SERVICE_TYPE_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-LC_SERVICE_TYPE_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-SERVICE_PROCESS_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-MUNICIPAL_FISCAL_BENEFIT_CODE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-REFERENCE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ITEM_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-FISCAL_DOCUMENT_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_KEY sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_PROVISORY_NUMBER sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_SERIES sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_SUBSERIES sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_MODEL sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-DOCUMENT_TYPE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ENVIRONMENT_TYPE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-POST_DATE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ISSUE_DATE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-ISSUE_TIME sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-TIME_ZONE sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-APPLICATION_VERSION sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-EXTENSION sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-TAXES sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-BADI_FIELDS sy-vline 
WA_NFE_CLOUD_REQ_ITEM_STR-EXTENSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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