ABAP Select data from SAP table /SDF/DDIC_CHAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/DDIC_CHAR
*  INTO TABLE @DATA(IT_/SDF/DDIC_CHAR2).
*--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_/SDF/DDIC_CHAR INDEX 1 INTO DATA(WA_/SDF/DDIC_CHAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/DDIC_CHAR>-CHAR1 = 1.
</SDF/DDIC_CHAR>-CHAR2 = 1.
</SDF/DDIC_CHAR>-CHAR3 = 1.
</SDF/DDIC_CHAR>-CHAR4 = 1.
</SDF/DDIC_CHAR>-CHAR8 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/DDIC_CHAR-CHAR10, sy-vline,
  WA_/SDF/DDIC_CHAR-CHAR16, sy-vline,
  WA_/SDF/DDIC_CHAR-CHAR20, sy-vline,
  WA_/SDF/DDIC_CHAR-CHAR24, sy-vline,
  WA_/SDF/DDIC_CHAR-CHAR30, sy-vline,
  WA_/SDF/DDIC_CHAR-CHAR32, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/DDIC_CHAR 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_/SDF/DDIC_CHAR 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_/SDF/DDIC_CHAR INTO WA_/SDF/DDIC_CHAR.


*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_/SDF/DDIC_CHAR_STR, 
CHAR1 TYPE STRING,
CHAR2 TYPE STRING,
CHAR3 TYPE STRING,
CHAR4 TYPE STRING,
CHAR8 TYPE STRING,
CHAR10 TYPE STRING,
CHAR16 TYPE STRING,
CHAR20 TYPE STRING,
CHAR24 TYPE STRING,
CHAR30 TYPE STRING,
CHAR32 TYPE STRING,
CHAR40 TYPE STRING,
CHAR50 TYPE STRING,
CHAR60 TYPE STRING,
CHAR64 TYPE STRING,
CHAR80 TYPE STRING,
CHAR100 TYPE STRING,
CHAR128 TYPE STRING,
CHAR200 TYPE STRING,
CHAR256 TYPE STRING,
CHAR500 TYPE STRING,
CHAR512 TYPE STRING,
CHAR1000 TYPE STRING,
CHAR1024 TYPE STRING,
CHAR2048 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/DDIC_CHAR_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_/SDF/DDIC_CHAR_STR-CHAR1 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR2 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR3 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR4 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR8 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR10 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR16 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR20 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR24 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR30 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR32 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR40 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR50 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR60 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR64 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR80 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR100 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR128 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR200 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR256 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR500 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR512 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR1000 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR1024 sy-vline 
WA_/SDF/DDIC_CHAR_STR-CHAR2048 sy-vline      INTO ld_text SEPARATED BY SPACE.

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