ABAP Select data from SAP table CACNS_PERS_DEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACNS_PERS_DEAD
*  INTO TABLE @DATA(IT_CACNS_PERS_DEAD2).
*--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_CACNS_PERS_DEAD INDEX 1 INTO DATA(WA_CACNS_PERS_DEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACNS_PERS_DEAD>-MANDT = 1.
<CACNS_PERS_DEAD>-UNAME = 1.
<CACNS_PERS_DEAD>-YELLOW_TRIP = 1.
<CACNS_PERS_DEAD>-RED_TRIP = 1.
<CACNS_PERS_DEAD>-N_O_DEADLINES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACNS_PERS_DEAD-SHOW_DEADLINES, sy-vline,
  WA_CACNS_PERS_DEAD-YELLOW_DEADLINE, sy-vline,
  WA_CACNS_PERS_DEAD-RED_DEADLINE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CACNS_PERS_DEAD 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_CACNS_PERS_DEAD 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_CACNS_PERS_DEAD INTO WA_CACNS_PERS_DEAD.


*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_CACNS_PERS_DEAD_STR, 
MANDT TYPE STRING,
UNAME TYPE STRING,
YELLOW_TRIP TYPE STRING,
RED_TRIP TYPE STRING,
N_O_DEADLINES TYPE STRING,
SHOW_DEADLINES TYPE STRING,
YELLOW_DEADLINE TYPE STRING,
RED_DEADLINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACNS_PERS_DEAD_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_CACNS_PERS_DEAD_STR-MANDT sy-vline 
WA_CACNS_PERS_DEAD_STR-UNAME sy-vline 
WA_CACNS_PERS_DEAD_STR-YELLOW_TRIP sy-vline 
WA_CACNS_PERS_DEAD_STR-RED_TRIP sy-vline 
WA_CACNS_PERS_DEAD_STR-N_O_DEADLINES sy-vline 
WA_CACNS_PERS_DEAD_STR-SHOW_DEADLINES sy-vline 
WA_CACNS_PERS_DEAD_STR-YELLOW_DEADLINE sy-vline 
WA_CACNS_PERS_DEAD_STR-RED_DEADLINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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