ABAP Select data from SAP table /PLMI/S_RFO_ESO_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_RFO_ESO_ITEM
*  INTO TABLE @DATA(IT_/PLMI/S_RFO_ESO_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_/PLMI/S_RFO_ESO_ITEM INDEX 1 INTO DATA(WA_/PLMI/S_RFO_ESO_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_RFO_ESO_ITEM>-RFO_GUID = 1.
</PLMI/S_RFO_ESO_ITEM>-ITEM_GUID = 1.
</PLMI/S_RFO_ESO_ITEM>-SUBRECN = 1.
</PLMI/S_RFO_ESO_ITEM>-SUBID = 1.
</PLMI/S_RFO_ESO_ITEM>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_RFO_ESO_ITEM-MATERIAL_EXT, sy-vline,
  WA_/PLMI/S_RFO_ESO_ITEM-QUANT, sy-vline,
  WA_/PLMI/S_RFO_ESO_ITEM-UOM, sy-vline,
  WA_/PLMI/S_RFO_ESO_ITEM-COMP_TYPE, sy-vline,
  WA_/PLMI/S_RFO_ESO_ITEM-ALT_ITEM_GUID, sy-vline,
  WA_/PLMI/S_RFO_ESO_ITEM-ALT_ITEM_FLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_RFO_ESO_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_/PLMI/S_RFO_ESO_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_/PLMI/S_RFO_ESO_ITEM INTO WA_/PLMI/S_RFO_ESO_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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASS_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-MASS_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-MASS_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLUME_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-VOLUME_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-VOLUME_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DENSITY_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-DENSITY_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-DENSITY_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_RFO_ESO_ITEM-ACTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_RFO_ESO_ITEM-ACTN.
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_/PLMI/S_RFO_ESO_ITEM_STR, 
RFO_GUID TYPE STRING,
ITEM_GUID TYPE STRING,
SUBRECN TYPE STRING,
SUBID TYPE STRING,
MATERIAL TYPE STRING,
MATERIAL_EXT TYPE STRING,
QUANT TYPE STRING,
UOM TYPE STRING,
COMP_TYPE TYPE STRING,
ALT_ITEM_GUID TYPE STRING,
ALT_ITEM_FLAG TYPE STRING,
QUANT_LOW TYPE STRING,
QUANT_HIGH TYPE STRING,
SCRAP TYPE STRING,
EXCEPTION_VALUE TYPE STRING,
MASSABSFLOAT TYPE STRING,
OVERRUN TYPE STRING,
MASS_PCT TYPE STRING,
VOLUME_PCT TYPE STRING,
EXCEPTION_VALUE_DESC TYPE STRING,
MASS TYPE STRING,
VOLUME TYPE STRING,
CALCULATED TYPE STRING,
DENSITY TYPE STRING,
LOSS_QUANT TYPE STRING,
LOG_QUANT TYPE STRING,
MASS_PO TYPE STRING,
MASS_PCT_PO TYPE STRING,
VOLUME_PO TYPE STRING,
VOLUME_PCT_PO TYPE STRING,
LOG_QUANT_PO TYPE STRING,
LOSS_QUANT_PO TYPE STRING,
MASS_UOM TYPE STRING,
VOLUME_UOM TYPE STRING,
DENSITY_UOM TYPE STRING,
ACTN TYPE STRING,
RCP_GUID_LINK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_RFO_ESO_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_/PLMI/S_RFO_ESO_ITEM_STR-RFO_GUID sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-ITEM_GUID sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-SUBRECN sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-SUBID sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MATERIAL sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MATERIAL_EXT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-QUANT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-UOM sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-COMP_TYPE sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-ALT_ITEM_GUID sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-ALT_ITEM_FLAG sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-QUANT_LOW sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-QUANT_HIGH sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-SCRAP sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-EXCEPTION_VALUE sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASSABSFLOAT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-OVERRUN sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASS_PCT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-VOLUME_PCT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-EXCEPTION_VALUE_DESC sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASS sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-VOLUME sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-CALCULATED sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-DENSITY sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-LOSS_QUANT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-LOG_QUANT sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASS_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASS_PCT_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-VOLUME_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-VOLUME_PCT_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-LOG_QUANT_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-LOSS_QUANT_PO sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-MASS_UOM sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-VOLUME_UOM sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-DENSITY_UOM sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-ACTN sy-vline 
WA_/PLMI/S_RFO_ESO_ITEM_STR-RCP_GUID_LINK sy-vline      INTO ld_text SEPARATED BY SPACE.

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