ABAP Select data from SAP table P_CFD_FIELD_VERS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP P_CFD_FIELD_VERS 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_FIELD_VERS. 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_FIELD_VERS 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_FIELD_VERS TYPE STANDARD TABLE OF P_CFD_FIELD_VERS,
      WA_P_CFD_FIELD_VERS TYPE P_CFD_FIELD_VERS,
      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_FIELD_VERS> TYPE P_CFD_FIELD_VERS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P_CFD_FIELD_VERS
*  INTO TABLE @DATA(IT_P_CFD_FIELD_VERS2).
*--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_FIELD_VERS INDEX 1 INTO DATA(WA_P_CFD_FIELD_VERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P_CFD_FIELD_VERS>-EXTERNALNAME = 1.
<P_CFD_FIELD_VERS>-BUSINESSCONTEXT = 1.
<P_CFD_FIELD_VERS>-NAME = 1.
<P_CFD_FIELD_VERS>-VERSION = 1.
<P_CFD_FIELD_VERS>-TECHNICALNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P_CFD_FIELD_VERS-FIELDLABEL, sy-vline,
  WA_P_CFD_FIELD_VERS-INTERNALTYPE, sy-vline,
  WA_P_CFD_FIELD_VERS-TYPE, sy-vline,
  WA_P_CFD_FIELD_VERS-LENGTH, sy-vline,
  WA_P_CFD_FIELD_VERS-SCALE, sy-vline,
  WA_P_CFD_FIELD_VERS-DATATYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P_CFD_FIELD_VERS 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_FIELD_VERS 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_FIELD_VERS INTO WA_P_CFD_FIELD_VERS.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_P_CFD_FIELD_VERS-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P_CFD_FIELD_VERS-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_P_CFD_FIELD_VERS-MASTERLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P_CFD_FIELD_VERS-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_FIELD_VERS_STR, 
EXTERNALNAME TYPE STRING,
BUSINESSCONTEXT TYPE STRING,
NAME TYPE STRING,
VERSION TYPE STRING,
TECHNICALNAME TYPE STRING,
FIELDLABEL TYPE STRING,
INTERNALTYPE TYPE STRING,
TYPE TYPE STRING,
LENGTH TYPE STRING,
SCALE TYPE STRING,
DATATYPE TYPE STRING,
ORIGIN TYPE STRING,
MASTERLANGUAGE TYPE STRING,
AGGREGATION TYPE STRING,
DATAELEMENTNAME TYPE STRING,
VALUEHELPVIEWNAME TYPE STRING,
DISPLAYOPTION TYPE STRING,
CODELISTUPPERCASEONLY TYPE STRING,
CREATEDAT TYPE STRING,
CREATEDBY TYPE STRING,
LASTCHANGEDAT TYPE STRING,
LASTCHANGEDBY TYPE STRING,
ASSOCIATEDBUSINESSOBJECT TYPE STRING,
CHARACTERISTICNAME TYPE STRING,
CLASSTYPE TYPE STRING,
CLASSIFICATIONOBJECTTYPE TYPE STRING,
ASSOCIATEDBODESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P_CFD_FIELD_VERS_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_FIELD_VERS_STR-EXTERNALNAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-BUSINESSCONTEXT sy-vline 
WA_P_CFD_FIELD_VERS_STR-NAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-VERSION sy-vline 
WA_P_CFD_FIELD_VERS_STR-TECHNICALNAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-FIELDLABEL sy-vline 
WA_P_CFD_FIELD_VERS_STR-INTERNALTYPE sy-vline 
WA_P_CFD_FIELD_VERS_STR-TYPE sy-vline 
WA_P_CFD_FIELD_VERS_STR-LENGTH sy-vline 
WA_P_CFD_FIELD_VERS_STR-SCALE sy-vline 
WA_P_CFD_FIELD_VERS_STR-DATATYPE sy-vline 
WA_P_CFD_FIELD_VERS_STR-ORIGIN sy-vline 
WA_P_CFD_FIELD_VERS_STR-MASTERLANGUAGE sy-vline 
WA_P_CFD_FIELD_VERS_STR-AGGREGATION sy-vline 
WA_P_CFD_FIELD_VERS_STR-DATAELEMENTNAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-VALUEHELPVIEWNAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-DISPLAYOPTION sy-vline 
WA_P_CFD_FIELD_VERS_STR-CODELISTUPPERCASEONLY sy-vline 
WA_P_CFD_FIELD_VERS_STR-CREATEDAT sy-vline 
WA_P_CFD_FIELD_VERS_STR-CREATEDBY sy-vline 
WA_P_CFD_FIELD_VERS_STR-LASTCHANGEDAT sy-vline 
WA_P_CFD_FIELD_VERS_STR-LASTCHANGEDBY sy-vline 
WA_P_CFD_FIELD_VERS_STR-ASSOCIATEDBUSINESSOBJECT sy-vline 
WA_P_CFD_FIELD_VERS_STR-CHARACTERISTICNAME sy-vline 
WA_P_CFD_FIELD_VERS_STR-CLASSTYPE sy-vline 
WA_P_CFD_FIELD_VERS_STR-CLASSIFICATIONOBJECTTYPE sy-vline 
WA_P_CFD_FIELD_VERS_STR-ASSOCIATEDBODESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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