ABAP Select data from SAP table /TDAG/RCSS_KEY_USE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/RCSS_KEY_USE
*  INTO TABLE @DATA(IT_/TDAG/RCSS_KEY_USE2).
*--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_/TDAG/RCSS_KEY_USE INDEX 1 INTO DATA(WA_/TDAG/RCSS_KEY_USE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/RCSS_KEY_USE>-RECN = 1.
</TDAG/RCSS_KEY_USE>-OBJEK = 1.
</TDAG/RCSS_KEY_USE>-SHORTTITLE_CATPIN = 1.
</TDAG/RCSS_KEY_USE>-SHORTTITLE_PHRID = 1.
</TDAG/RCSS_KEY_USE>-SECTOROFUSE_CATPIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/RCSS_KEY_USE-SECTOROFUSE_PHRID, sy-vline,
  WA_/TDAG/RCSS_KEY_USE-PRODUCTCAT_CATPIN, sy-vline,
  WA_/TDAG/RCSS_KEY_USE-PRODUCTCAT_PHRID, sy-vline,
  WA_/TDAG/RCSS_KEY_USE-PROCESSCAT_CATPIN, sy-vline,
  WA_/TDAG/RCSS_KEY_USE-PROCESSCAT_PHRID, sy-vline,
  WA_/TDAG/RCSS_KEY_USE-ARTICLECAT_CATPIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/RCSS_KEY_USE 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_/TDAG/RCSS_KEY_USE 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_/TDAG/RCSS_KEY_USE INTO WA_/TDAG/RCSS_KEY_USE.


*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 RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field SHORTTITLE_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-SHORTTITLE_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-SHORTTITLE_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field SECTOROFUSE_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-SECTOROFUSE_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-SECTOROFUSE_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field PRODUCTCAT_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-PRODUCTCAT_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-PRODUCTCAT_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field PROCESSCAT_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-PROCESSCAT_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-PROCESSCAT_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field ARTICLECAT_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-ARTICLECAT_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-ARTICLECAT_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field ENVRELEASE_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-ENVRELEASE_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-ENVRELEASE_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field ACTIVITIES_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-ACTIVITIES_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-ACTIVITIES_PHRID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field REGSTATUS_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-REGSTATUS_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-REGSTATUS_PHRID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CHRI3, internal->external for field REMARK_PHRID
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_KEY_USE-REMARK_PHRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_KEY_USE-REMARK_PHRID.
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_/TDAG/RCSS_KEY_USE_STR, 
RECN TYPE STRING,
OBJEK TYPE STRING,
SHORTTITLE_CATPIN TYPE STRING,
SHORTTITLE_PHRID TYPE STRING,
SECTOROFUSE_CATPIN TYPE STRING,
SECTOROFUSE_PHRID TYPE STRING,
PRODUCTCAT_CATPIN TYPE STRING,
PRODUCTCAT_PHRID TYPE STRING,
PROCESSCAT_CATPIN TYPE STRING,
PROCESSCAT_PHRID TYPE STRING,
ARTICLECAT_CATPIN TYPE STRING,
ARTICLECAT_PHRID TYPE STRING,
ENVRELEASE_CATPIN TYPE STRING,
ENVRELEASE_PHRID TYPE STRING,
ACTIVITIES_CATPIN TYPE STRING,
ACTIVITIES_PHRID TYPE STRING,
STATUSJUST_RECN TYPE STRING,
OWNUSE_CHAR TYPE STRING,
STANDARDUSE_CHAR TYPE STRING,
REGSTATUS_CATPIN TYPE STRING,
REGSTATUS_PHRID TYPE STRING,
TONNAGE TYPE STRING,
UNIT TYPE STRING,
USEDOCLINK_RECN TYPE STRING,
EXPDOCLINK_RECN TYPE STRING,
EXPOSURETEXT_RECN TYPE STRING,
REMARK_CATPIN TYPE STRING,
REMARK_PHRID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/RCSS_KEY_USE_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_/TDAG/RCSS_KEY_USE_STR-RECN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-OBJEK sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-SHORTTITLE_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-SHORTTITLE_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-SECTOROFUSE_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-SECTOROFUSE_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-PRODUCTCAT_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-PRODUCTCAT_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-PROCESSCAT_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-PROCESSCAT_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ARTICLECAT_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ARTICLECAT_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ENVRELEASE_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ENVRELEASE_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ACTIVITIES_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-ACTIVITIES_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-STATUSJUST_RECN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-OWNUSE_CHAR sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-STANDARDUSE_CHAR sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-REGSTATUS_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-REGSTATUS_PHRID sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-TONNAGE sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-UNIT sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-USEDOCLINK_RECN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-EXPDOCLINK_RECN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-EXPOSURETEXT_RECN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-REMARK_CATPIN sy-vline 
WA_/TDAG/RCSS_KEY_USE_STR-REMARK_PHRID sy-vline      INTO ld_text SEPARATED BY SPACE.

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