ABAP Select data from SAP table /UIF/LREP_FILE_STRUCTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /UIF/LREP_FILE_STRUCTURE
*  INTO TABLE @DATA(IT_/UIF/LREP_FILE_STRUCTURE2).
*--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_/UIF/LREP_FILE_STRUCTURE INDEX 1 INTO DATA(WA_/UIF/LREP_FILE_STRUCTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</UIF/LREP_FILE_STRUCTURE>-TROBJNAME = 1.
</UIF/LREP_FILE_STRUCTURE>-TROBJTYPE = 1.
</UIF/LREP_FILE_STRUCTURE>-HASH = 1.
</UIF/LREP_FILE_STRUCTURE>-CONT_ID = 1.
</UIF/LREP_FILE_STRUCTURE>-NAMESPACE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/UIF/LREP_FILE_STRUCTURE-NAME, sy-vline,
  WA_/UIF/LREP_FILE_STRUCTURE-TYPE, sy-vline,
  WA_/UIF/LREP_FILE_STRUCTURE-LAYER_TYPE, sy-vline,
  WA_/UIF/LREP_FILE_STRUCTURE-ORIG_LANG, sy-vline,
  WA_/UIF/LREP_FILE_STRUCTURE-HIDDEN, sy-vline,
  WA_/UIF/LREP_FILE_STRUCTURE-PACKAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/UIF/LREP_FILE_STRUCTURE 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_/UIF/LREP_FILE_STRUCTURE 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_/UIF/LREP_FILE_STRUCTURE INTO WA_/UIF/LREP_FILE_STRUCTURE.


*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 ISOLA, internal->external for field ORIG_LANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/UIF/LREP_FILE_STRUCTURE-ORIG_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/UIF/LREP_FILE_STRUCTURE-ORIG_LANG.
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_/UIF/LREP_FILE_STRUCTURE_STR, 
TROBJNAME TYPE STRING,
TROBJTYPE TYPE STRING,
HASH TYPE STRING,
CONT_ID TYPE STRING,
NAMESPACE TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
LAYER_TYPE TYPE STRING,
ORIG_LANG TYPE STRING,
HIDDEN TYPE STRING,
PACKAGE TYPE STRING,
TRKORR TYPE STRING,
SP_CONFIG_VERSION TYPE STRING,
PROVIDER_VERSION TYPE STRING,
REPLICATED TYPE STRING,
LOAD_HASH TYPE STRING,
LOAD_TIMESTAMP TYPE STRING,
ATTR_TAB TYPE STRING,
CONTENT_XSTRING TYPE STRING,
CONTENT_STRING TYPE STRING,
REF_OBJ_TAB TYPE STRING,
EXTREF_TAB TYPE STRING,
SHORT_TEXT_TAB TYPE STRING,
LONG_TEXT_TAB TYPE STRING,
TEXT_TAB TYPE STRING,
USER TYPE STRING,
ATO_ITEM TYPE STRING,
ITEM_ID TYPE STRING,
ITEM_TYPE TYPE STRING,
ITEM_TEXT TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
LAST_CHANGED_BY TYPE STRING,
LAST_CHANGED_AT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/UIF/LREP_FILE_STRUCTURE_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_/UIF/LREP_FILE_STRUCTURE_STR-TROBJNAME sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-TROBJTYPE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-HASH sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-CONT_ID sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-NAMESPACE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-NAME sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-TYPE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LAYER_TYPE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ORIG_LANG sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-HIDDEN sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-PACKAGE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-TRKORR sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-SP_CONFIG_VERSION sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-PROVIDER_VERSION sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-REPLICATED sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LOAD_HASH sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LOAD_TIMESTAMP sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ATTR_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-CONTENT_XSTRING sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-CONTENT_STRING sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-REF_OBJ_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-EXTREF_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-SHORT_TEXT_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LONG_TEXT_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-TEXT_TAB sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-USER sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ATO_ITEM sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ITEM_ID sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ITEM_TYPE sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-ITEM_TEXT sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-CREATED_BY sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-CREATED_AT sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LAST_CHANGED_BY sy-vline 
WA_/UIF/LREP_FILE_STRUCTURE_STR-LAST_CHANGED_AT sy-vline      INTO ld_text SEPARATED BY SPACE.

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