ABAP Select data from SAP table RDISPCASEPROT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDISPCASEPROT
*  INTO TABLE @DATA(IT_RDISPCASEPROT2).
*--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_RDISPCASEPROT INDEX 1 INTO DATA(WA_RDISPCASEPROT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDISPCASEPROT>-MANDT = 1.
<RDISPCASEPROT>-DISPUTECASEUUID = 1.
<RDISPCASEPROT>-TABLECHANGELOGKEY = 1.
<RDISPCASEPROT>-TABLECHANGELOGUSER = 1.
<RDISPCASEPROT>-LASTCHANGEDBYUSERNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDISPCASEPROT-CASELASTCHANGEDON, sy-vline,
  WA_RDISPCASEPROT-TABLECHANGELOGFIELDOLDVALUE, sy-vline,
  WA_RDISPCASEPROT-CHANGEDOCNEWFIELDVALUETEXT, sy-vline,
  WA_RDISPCASEPROT-TABLECHANGELOGFIELDNEWVALUE, sy-vline,
  WA_RDISPCASEPROT-CHANGEDOCOLDFIELDVALUETEXT, sy-vline,
  WA_RDISPCASEPROT-PARAMETERVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDISPCASEPROT 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_RDISPCASEPROT 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_RDISPCASEPROT INTO WA_RDISPCASEPROT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RDISPCASEPROT_STR, 
MANDT TYPE STRING,
DISPUTECASEUUID TYPE STRING,
TABLECHANGELOGKEY TYPE STRING,
TABLECHANGELOGUSER TYPE STRING,
LASTCHANGEDBYUSERNAME TYPE STRING,
CASELASTCHANGEDON TYPE STRING,
TABLECHANGELOGFIELDOLDVALUE TYPE STRING,
CHANGEDOCNEWFIELDVALUETEXT TYPE STRING,
TABLECHANGELOGFIELDNEWVALUE TYPE STRING,
CHANGEDOCOLDFIELDVALUETEXT TYPE STRING,
PARAMETERVALUE TYPE STRING,
PARAMETERNAME TYPE STRING,
OBJECTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDISPCASEPROT_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_RDISPCASEPROT_STR-MANDT sy-vline 
WA_RDISPCASEPROT_STR-DISPUTECASEUUID sy-vline 
WA_RDISPCASEPROT_STR-TABLECHANGELOGKEY sy-vline 
WA_RDISPCASEPROT_STR-TABLECHANGELOGUSER sy-vline 
WA_RDISPCASEPROT_STR-LASTCHANGEDBYUSERNAME sy-vline 
WA_RDISPCASEPROT_STR-CASELASTCHANGEDON sy-vline 
WA_RDISPCASEPROT_STR-TABLECHANGELOGFIELDOLDVALUE sy-vline 
WA_RDISPCASEPROT_STR-CHANGEDOCNEWFIELDVALUETEXT sy-vline 
WA_RDISPCASEPROT_STR-TABLECHANGELOGFIELDNEWVALUE sy-vline 
WA_RDISPCASEPROT_STR-CHANGEDOCOLDFIELDVALUETEXT sy-vline 
WA_RDISPCASEPROT_STR-PARAMETERVALUE sy-vline 
WA_RDISPCASEPROT_STR-PARAMETERNAME sy-vline 
WA_RDISPCASEPROT_STR-OBJECTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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