ABAP Select data from SAP table P_CFD_DE_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P_CFD_DE_EXT
*  INTO TABLE @DATA(IT_P_CFD_DE_EXT2).
*--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_P_CFD_DE_EXT INDEX 1 INTO DATA(WA_P_CFD_DE_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P_CFD_DE_EXT>-DATASOURCEEXTENSIONNAME = 1.
<P_CFD_DE_EXT>-DATASOURCEEXTENSIONDESCRIPTION = 1.
<P_CFD_DE_EXT>-DATASOURCENAME = 1.
<P_CFD_DE_EXT>-DATASOURCETYPE = 1.
<P_CFD_DE_EXT>-STATUSCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P_CFD_DE_EXT-REWORKPRIORITYCODE, sy-vline,
  WA_P_CFD_DE_EXT-REWORKPRIORITYTEXT, sy-vline,
  WA_P_CFD_DE_EXT-REWORKCATEGORYCODE, sy-vline,
  WA_P_CFD_DE_EXT-REWORKCATEGORYTEXT, sy-vline,
  WA_P_CFD_DE_EXT-FIELDNAMEPREFIX, sy-vline,
  WA_P_CFD_DE_EXT-MASTERLANGUAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P_CFD_DE_EXT 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_P_CFD_DE_EXT 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_P_CFD_DE_EXT INTO WA_P_CFD_DE_EXT.


*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 ISOLA, internal->external for field MASTERLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_P_CFD_DE_EXT-MASTERLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P_CFD_DE_EXT-MASTERLANGUAGE.
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_P_CFD_DE_EXT_STR, 
DATASOURCEEXTENSIONNAME TYPE STRING,
DATASOURCEEXTENSIONDESCRIPTION TYPE STRING,
DATASOURCENAME TYPE STRING,
DATASOURCETYPE TYPE STRING,
STATUSCODE TYPE STRING,
REWORKPRIORITYCODE TYPE STRING,
REWORKPRIORITYTEXT TYPE STRING,
REWORKCATEGORYCODE TYPE STRING,
REWORKCATEGORYTEXT TYPE STRING,
FIELDNAMEPREFIX TYPE STRING,
MASTERLANGUAGE TYPE STRING,
CREATEDAT TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDBYDESCRIPTION TYPE STRING,
LASTCHANGEDAT TYPE STRING,
LASTCHANGEDBY TYPE STRING,
CHANGEDBYDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P_CFD_DE_EXT_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_P_CFD_DE_EXT_STR-DATASOURCEEXTENSIONNAME sy-vline 
WA_P_CFD_DE_EXT_STR-DATASOURCEEXTENSIONDESCRIPTION sy-vline 
WA_P_CFD_DE_EXT_STR-DATASOURCENAME sy-vline 
WA_P_CFD_DE_EXT_STR-DATASOURCETYPE sy-vline 
WA_P_CFD_DE_EXT_STR-STATUSCODE sy-vline 
WA_P_CFD_DE_EXT_STR-REWORKPRIORITYCODE sy-vline 
WA_P_CFD_DE_EXT_STR-REWORKPRIORITYTEXT sy-vline 
WA_P_CFD_DE_EXT_STR-REWORKCATEGORYCODE sy-vline 
WA_P_CFD_DE_EXT_STR-REWORKCATEGORYTEXT sy-vline 
WA_P_CFD_DE_EXT_STR-FIELDNAMEPREFIX sy-vline 
WA_P_CFD_DE_EXT_STR-MASTERLANGUAGE sy-vline 
WA_P_CFD_DE_EXT_STR-CREATEDAT sy-vline 
WA_P_CFD_DE_EXT_STR-CREATEDBY sy-vline 
WA_P_CFD_DE_EXT_STR-CREATEDBYDESCRIPTION sy-vline 
WA_P_CFD_DE_EXT_STR-LASTCHANGEDAT sy-vline 
WA_P_CFD_DE_EXT_STR-LASTCHANGEDBY sy-vline 
WA_P_CFD_DE_EXT_STR-CHANGEDBYDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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