ABAP Select data from SAP table C_CFD_REG_CD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM C_CFD_REG_CD
*  INTO TABLE @DATA(IT_C_CFD_REG_CD2).
*--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_C_CFD_REG_CD INDEX 1 INTO DATA(WA_C_CFD_REG_CD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<C_CFD_REG_CD>-CDSVIEWNAME = 1.
<C_CFD_REG_CD>-BUSINESSCONTEXT = 1.
<C_CFD_REG_CD>-UNIONSUFFIX = 1.
<C_CFD_REG_CD>-ROLESUFFIX = 1.
<C_CFD_REG_CD>-EXTENSIONINCLUDEVIEWNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_C_CFD_REG_CD-EMAILTEMPLATEID, sy-vline,
  WA_C_CFD_REG_CD-RELEASESTATUS, sy-vline,
  WA_C_CFD_REG_CD-AVAILABILITY, sy-vline,
  WA_C_CFD_REG_CD-SCREENUSAGE, sy-vline,
  WA_C_CFD_REG_CD-EMAILUSAGE, sy-vline,
  WA_C_CFD_REG_CD-ISINVISIBLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_C_CFD_REG_CD 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_C_CFD_REG_CD 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_C_CFD_REG_CD INTO WA_C_CFD_REG_CD.


*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_C_CFD_REG_CD_STR, 
CDSVIEWNAME TYPE STRING,
BUSINESSCONTEXT TYPE STRING,
UNIONSUFFIX TYPE STRING,
ROLESUFFIX TYPE STRING,
EXTENSIONINCLUDEVIEWNAME TYPE STRING,
EMAILTEMPLATEID TYPE STRING,
RELEASESTATUS TYPE STRING,
AVAILABILITY TYPE STRING,
SCREENUSAGE TYPE STRING,
EMAILUSAGE TYPE STRING,
ISINVISIBLE TYPE STRING,
ISAPIUSAGE TYPE STRING,
SEARCHSUPPORTED TYPE STRING,
VIEWTYPE TYPE STRING,
BADIDEFINITIONFORHIDDEN TYPE STRING,
MANDATORYFIELDENABLED TYPE STRING,
READONLYFIELDENABLED TYPE STRING,
DESCRIPTION TYPE STRING,
EMAILTEMPLATEDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_C_CFD_REG_CD_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_C_CFD_REG_CD_STR-CDSVIEWNAME sy-vline 
WA_C_CFD_REG_CD_STR-BUSINESSCONTEXT sy-vline 
WA_C_CFD_REG_CD_STR-UNIONSUFFIX sy-vline 
WA_C_CFD_REG_CD_STR-ROLESUFFIX sy-vline 
WA_C_CFD_REG_CD_STR-EXTENSIONINCLUDEVIEWNAME sy-vline 
WA_C_CFD_REG_CD_STR-EMAILTEMPLATEID sy-vline 
WA_C_CFD_REG_CD_STR-RELEASESTATUS sy-vline 
WA_C_CFD_REG_CD_STR-AVAILABILITY sy-vline 
WA_C_CFD_REG_CD_STR-SCREENUSAGE sy-vline 
WA_C_CFD_REG_CD_STR-EMAILUSAGE sy-vline 
WA_C_CFD_REG_CD_STR-ISINVISIBLE sy-vline 
WA_C_CFD_REG_CD_STR-ISAPIUSAGE sy-vline 
WA_C_CFD_REG_CD_STR-SEARCHSUPPORTED sy-vline 
WA_C_CFD_REG_CD_STR-VIEWTYPE sy-vline 
WA_C_CFD_REG_CD_STR-BADIDEFINITIONFORHIDDEN sy-vline 
WA_C_CFD_REG_CD_STR-MANDATORYFIELDENABLED sy-vline 
WA_C_CFD_REG_CD_STR-READONLYFIELDENABLED sy-vline 
WA_C_CFD_REG_CD_STR-DESCRIPTION sy-vline 
WA_C_CFD_REG_CD_STR-EMAILTEMPLATEDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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