ABAP Select data from SAP table ROIUXI_LOAD_FDN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIUXI_LOAD_FDN
*  INTO TABLE @DATA(IT_ROIUXI_LOAD_FDN2).
*--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_ROIUXI_LOAD_FDN INDEX 1 INTO DATA(WA_ROIUXI_LOAD_FDN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIUXI_LOAD_FDN>-MANDT = 1.
<ROIUXI_LOAD_FDN>-BUKRS = 1.
<ROIUXI_LOAD_FDN>-VNAME = 1.
<ROIUXI_LOAD_FDN>-DOI_NO = 1.
<ROIUXI_LOAD_FDN>-OOWN_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIUXI_LOAD_FDN-OOWN_INT_TYPE_CD, sy-vline,
  WA_ROIUXI_LOAD_FDN-OOWN_ISQ_NO, sy-vline,
  WA_ROIUXI_LOAD_FDN-EFF_FROM_DT, sy-vline,
  WA_ROIUXI_LOAD_FDN-RTCH_NO, sy-vline,
  WA_ROIUXI_LOAD_FDN-CONN_ID_IB, sy-vline,
  WA_ROIUXI_LOAD_FDN-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIUXI_LOAD_FDN 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_ROIUXI_LOAD_FDN 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_ROIUXI_LOAD_FDN INTO WA_ROIUXI_LOAD_FDN.


*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 VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIUXI_LOAD_FDN-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIUXI_LOAD_FDN-VNAME.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field CONN_ID_OB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIUXI_LOAD_FDN-CONN_ID_OB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIUXI_LOAD_FDN-CONN_ID_OB.
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_ROIUXI_LOAD_FDN_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
VNAME TYPE STRING,
DOI_NO TYPE STRING,
OOWN_NO TYPE STRING,
OOWN_INT_TYPE_CD TYPE STRING,
OOWN_ISQ_NO TYPE STRING,
EFF_FROM_DT TYPE STRING,
RTCH_NO TYPE STRING,
CONN_ID_IB TYPE STRING,
STATUS TYPE STRING,
STATUS_TIMESTAMP TYPE STRING,
RSN_CD TYPE STRING,
CONN_ID_OB TYPE STRING,
SEND_NO TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,
TFROR_FLAG TYPE STRING,
DOC_NO TYPE STRING,
DOC_YEAR TYPE STRING,
FDN_STATUS TYPE STRING,
MESSAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIUXI_LOAD_FDN_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_ROIUXI_LOAD_FDN_STR-MANDT sy-vline 
WA_ROIUXI_LOAD_FDN_STR-BUKRS sy-vline 
WA_ROIUXI_LOAD_FDN_STR-VNAME sy-vline 
WA_ROIUXI_LOAD_FDN_STR-DOI_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-OOWN_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-OOWN_INT_TYPE_CD sy-vline 
WA_ROIUXI_LOAD_FDN_STR-OOWN_ISQ_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-EFF_FROM_DT sy-vline 
WA_ROIUXI_LOAD_FDN_STR-RTCH_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-CONN_ID_IB sy-vline 
WA_ROIUXI_LOAD_FDN_STR-STATUS sy-vline 
WA_ROIUXI_LOAD_FDN_STR-STATUS_TIMESTAMP sy-vline 
WA_ROIUXI_LOAD_FDN_STR-RSN_CD sy-vline 
WA_ROIUXI_LOAD_FDN_STR-CONN_ID_OB sy-vline 
WA_ROIUXI_LOAD_FDN_STR-SEND_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-OIU_CRUSER sy-vline 
WA_ROIUXI_LOAD_FDN_STR-OIU_TIMESTAMP sy-vline 
WA_ROIUXI_LOAD_FDN_STR-TFROR_FLAG sy-vline 
WA_ROIUXI_LOAD_FDN_STR-DOC_NO sy-vline 
WA_ROIUXI_LOAD_FDN_STR-DOC_YEAR sy-vline 
WA_ROIUXI_LOAD_FDN_STR-FDN_STATUS sy-vline 
WA_ROIUXI_LOAD_FDN_STR-MESSAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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