ABAP Select data from SAP table /TMF/D_NF_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /TMF/D_NF_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 /TMF/D_NF_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 /TMF/D_NF_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_/TMF/D_NF_ITEM TYPE STANDARD TABLE OF /TMF/D_NF_ITEM,
      WA_/TMF/D_NF_ITEM TYPE /TMF/D_NF_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: </TMF/D_NF_ITEM> TYPE /TMF/D_NF_ITEM.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /TMF/D_NF_ITEM
  INTO TABLE IT_/TMF/D_NF_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TMF/D_NF_ITEM
*  INTO TABLE @DATA(IT_/TMF/D_NF_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_/TMF/D_NF_ITEM INDEX 1 INTO DATA(WA_/TMF/D_NF_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/TMF/D_NF_ITEM ASSIGNING </TMF/D_NF_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TMF/D_NF_ITEM>-MANDT = 1.
</TMF/D_NF_ITEM>-NF_ID = 1.
</TMF/D_NF_ITEM>-NUM_ITEM = 1.
</TMF/D_NF_ITEM>-COD_ITEM = 1.
</TMF/D_NF_ITEM>-DESCR_COMPL = 1.

ENDLOOP.

LOOP AT IT_/TMF/D_NF_ITEM INTO WA_/TMF/D_NF_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TMF/D_NF_ITEM-QTD, sy-vline,
  WA_/TMF/D_NF_ITEM-UNID, sy-vline,
  WA_/TMF/D_NF_ITEM-VL_ITEM, sy-vline,
  WA_/TMF/D_NF_ITEM-VL_DESC, sy-vline,
  WA_/TMF/D_NF_ITEM-IND_MOV, sy-vline,
  WA_/TMF/D_NF_ITEM-CST_ICMS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TMF/D_NF_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_/TMF/D_NF_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_/TMF/D_NF_ITEM INTO WA_/TMF/D_NF_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.

*Conversion exit EAN11, internal->external for field COD_EAN_TRIB
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_/TMF/D_NF_ITEM-COD_EAN_TRIB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TMF/D_NF_ITEM-COD_EAN_TRIB.
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_/TMF/D_NF_ITEM_STR, 
MANDT TYPE STRING,
NF_ID TYPE STRING,
NUM_ITEM TYPE STRING,
COD_ITEM TYPE STRING,
DESCR_COMPL TYPE STRING,
QTD TYPE STRING,
UNID TYPE STRING,
VL_ITEM TYPE STRING,
VL_DESC TYPE STRING,
IND_MOV TYPE STRING,
CST_ICMS TYPE STRING,
CFOP TYPE STRING,
COD_NAT TYPE STRING,
CST_IPI TYPE STRING,
COD_ENQ TYPE STRING,
CST_PIS TYPE STRING,
CST_COFINS TYPE STRING,
COD_CTA TYPE STRING,
COD_CLASS TYPE STRING,
IND_REC TYPE STRING,
COD_PART TYPE STRING,
VL_OUT TYPE STRING,
VL_FRT TYPE STRING,
VL_SEG TYPE STRING,
VL_MERC TYPE STRING,
VL_BC_ICMS_UF TYPE STRING,
VL_ICMS_UF TYPE STRING,
TIPO_ITEM TYPE STRING,
MATUSE TYPE STRING,
AVALIACAO_AREA TYPE STRING,
AVALIACAO_TIPO TYPE STRING,
NUM_ITEM_EXT TYPE STRING,
COD_SELO_IPI TYPE STRING,
QT_SELO_IPI TYPE STRING,
COD_BARRA TYPE STRING,
CL_ENQ TYPE STRING,
IND_SERVICO TYPE STRING,
SYS_IVA TYPE STRING,
SYS_DIR_ICMS TYPE STRING,
SYS_DIR_IPI TYPE STRING,
SYS_ORG_ITEM TYPE STRING,
SYS_DIR_COFINS TYPE STRING,
SYS_DIR_PIS TYPE STRING,
VL_OUT_LIQ TYPE STRING,
MOD_DEF_ICMS TYPE STRING,
PED_COMPRA TYPE STRING,
PED_COMPRA_ITEM TYPE STRING,
VL_UNID TYPE STRING,
INC_IMPOSTO TYPE STRING,
VL_OPR_ENTRADA TYPE STRING,
VL_OPR_SAIDA TYPE STRING,
NCM TYPE STRING,
NAT_BC_CRED TYPE STRING,
CATEGORIA_CFOP TYPE STRING,
NUM_REF_LANCTO TYPE STRING,
TP_REF_LANCTO TYPE STRING,
ITM_REF_LANCTO TYPE STRING,
CENTRO TYPE STRING,
LOTE TYPE STRING,
CST_ISS TYPE STRING,
SYS_DIR_ISS TYPE STRING,
IND_STAT_ITEM TYPE STRING,
NUM_REF_DOC TYPE STRING,
NUM_REF_ITEM TYPE STRING,
VL_LIQ_IMP TYPE STRING,
QTD_CONTRATADA TYPE STRING,
COD_CCUS TYPE STRING,
NRO_CONTRATO TYPE STRING,
QTD_FATURADA TYPE STRING,
TARIFA_APLICADA TYPE STRING,
IND_DESC_JUD TYPE STRING,
TP_ISENCAO_REDUCAO TYPE STRING,
NBS TYPE STRING,
EX_IPI TYPE STRING,
FASE_UTILIZACAO TYPE STRING,
VL_ISNT_ISS_P TYPE STRING,
COD_BENEF_ICMS TYPE STRING,
COD_FCI TYPE STRING,
COD_CEST TYPE STRING,
COD_EAN_TRIB TYPE STRING,
QTD_TRIBUTADA TYPE STRING,
UNID_TRIBUTADA TYPE STRING,
VL_TRIB_APROX TYPE STRING,
COD_ISENCAO_ICMS TYPE STRING,
COD_INF_ITEM TYPE STRING,
COD_CTA_PIS TYPE STRING,
COD_CTA_COFINS TYPE STRING,
GRUPO_MATERIAL TYPE STRING,
PROD_INTERNA TYPE STRING,
IND_NAT_FRT TYPE STRING,
IND_CPRB TYPE STRING,
TP_SERVICO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TMF/D_NF_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_/TMF/D_NF_ITEM_STR-MANDT sy-vline 
WA_/TMF/D_NF_ITEM_STR-NF_ID sy-vline 
WA_/TMF/D_NF_ITEM_STR-NUM_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-DESCR_COMPL sy-vline 
WA_/TMF/D_NF_ITEM_STR-QTD sy-vline 
WA_/TMF/D_NF_ITEM_STR-UNID sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_DESC sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_MOV sy-vline 
WA_/TMF/D_NF_ITEM_STR-CST_ICMS sy-vline 
WA_/TMF/D_NF_ITEM_STR-CFOP sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_NAT sy-vline 
WA_/TMF/D_NF_ITEM_STR-CST_IPI sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_ENQ sy-vline 
WA_/TMF/D_NF_ITEM_STR-CST_PIS sy-vline 
WA_/TMF/D_NF_ITEM_STR-CST_COFINS sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CTA sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CLASS sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_REC sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_PART sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_OUT sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_FRT sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_SEG sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_MERC sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_BC_ICMS_UF sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_ICMS_UF sy-vline 
WA_/TMF/D_NF_ITEM_STR-TIPO_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-MATUSE sy-vline 
WA_/TMF/D_NF_ITEM_STR-AVALIACAO_AREA sy-vline 
WA_/TMF/D_NF_ITEM_STR-AVALIACAO_TIPO sy-vline 
WA_/TMF/D_NF_ITEM_STR-NUM_ITEM_EXT sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_SELO_IPI sy-vline 
WA_/TMF/D_NF_ITEM_STR-QT_SELO_IPI sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_BARRA sy-vline 
WA_/TMF/D_NF_ITEM_STR-CL_ENQ sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_SERVICO sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_IVA sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_DIR_ICMS sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_DIR_IPI sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_ORG_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_DIR_COFINS sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_DIR_PIS sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_OUT_LIQ sy-vline 
WA_/TMF/D_NF_ITEM_STR-MOD_DEF_ICMS sy-vline 
WA_/TMF/D_NF_ITEM_STR-PED_COMPRA sy-vline 
WA_/TMF/D_NF_ITEM_STR-PED_COMPRA_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_UNID sy-vline 
WA_/TMF/D_NF_ITEM_STR-INC_IMPOSTO sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_OPR_ENTRADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_OPR_SAIDA sy-vline 
WA_/TMF/D_NF_ITEM_STR-NCM sy-vline 
WA_/TMF/D_NF_ITEM_STR-NAT_BC_CRED sy-vline 
WA_/TMF/D_NF_ITEM_STR-CATEGORIA_CFOP sy-vline 
WA_/TMF/D_NF_ITEM_STR-NUM_REF_LANCTO sy-vline 
WA_/TMF/D_NF_ITEM_STR-TP_REF_LANCTO sy-vline 
WA_/TMF/D_NF_ITEM_STR-ITM_REF_LANCTO sy-vline 
WA_/TMF/D_NF_ITEM_STR-CENTRO sy-vline 
WA_/TMF/D_NF_ITEM_STR-LOTE sy-vline 
WA_/TMF/D_NF_ITEM_STR-CST_ISS sy-vline 
WA_/TMF/D_NF_ITEM_STR-SYS_DIR_ISS sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_STAT_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-NUM_REF_DOC sy-vline 
WA_/TMF/D_NF_ITEM_STR-NUM_REF_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_LIQ_IMP sy-vline 
WA_/TMF/D_NF_ITEM_STR-QTD_CONTRATADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CCUS sy-vline 
WA_/TMF/D_NF_ITEM_STR-NRO_CONTRATO sy-vline 
WA_/TMF/D_NF_ITEM_STR-QTD_FATURADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-TARIFA_APLICADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_DESC_JUD sy-vline 
WA_/TMF/D_NF_ITEM_STR-TP_ISENCAO_REDUCAO sy-vline 
WA_/TMF/D_NF_ITEM_STR-NBS sy-vline 
WA_/TMF/D_NF_ITEM_STR-EX_IPI sy-vline 
WA_/TMF/D_NF_ITEM_STR-FASE_UTILIZACAO sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_ISNT_ISS_P sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_BENEF_ICMS sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_FCI sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CEST sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_EAN_TRIB sy-vline 
WA_/TMF/D_NF_ITEM_STR-QTD_TRIBUTADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-UNID_TRIBUTADA sy-vline 
WA_/TMF/D_NF_ITEM_STR-VL_TRIB_APROX sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_ISENCAO_ICMS sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_INF_ITEM sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CTA_PIS sy-vline 
WA_/TMF/D_NF_ITEM_STR-COD_CTA_COFINS sy-vline 
WA_/TMF/D_NF_ITEM_STR-GRUPO_MATERIAL sy-vline 
WA_/TMF/D_NF_ITEM_STR-PROD_INTERNA sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_NAT_FRT sy-vline 
WA_/TMF/D_NF_ITEM_STR-IND_CPRB sy-vline 
WA_/TMF/D_NF_ITEM_STR-TP_SERVICO sy-vline      INTO ld_text SEPARATED BY SPACE.

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