ABAP Select data from SAP table WSPT_S_CERTIFCATE_INFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSPT_S_CERTIFCATE_INFO
*  INTO TABLE @DATA(IT_WSPT_S_CERTIFCATE_INFO2).
*--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_WSPT_S_CERTIFCATE_INFO INDEX 1 INTO DATA(WA_WSPT_S_CERTIFCATE_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSPT_S_CERTIFCATE_INFO>-SUBJECT = 1.
<WSPT_S_CERTIFCATE_INFO>-ISSUER = 1.
<WSPT_S_CERTIFCATE_INFO>-SERIALNO = 1.
<WSPT_S_CERTIFCATE_INFO>-VALIDFROM = 1.
<WSPT_S_CERTIFCATE_INFO>-VALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSPT_S_CERTIFCATE_INFO-ALGID, sy-vline,
  WA_WSPT_S_CERTIFCATE_INFO-FINGERPRINT, sy-vline,
  WA_WSPT_S_CERTIFCATE_INFO-SUMMARY, sy-vline,
  WA_WSPT_S_CERTIFCATE_INFO-ALL, sy-vline,
  WA_WSPT_S_CERTIFCATE_INFO-SERIALINT, sy-vline,
  WA_WSPT_S_CERTIFCATE_INFO-KEYTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSPT_S_CERTIFCATE_INFO 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_WSPT_S_CERTIFCATE_INFO 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_WSPT_S_CERTIFCATE_INFO INTO WA_WSPT_S_CERTIFCATE_INFO.


*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_WSPT_S_CERTIFCATE_INFO_STR, 
SUBJECT TYPE STRING,
ISSUER TYPE STRING,
SERIALNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
ALGID TYPE STRING,
FINGERPRINT TYPE STRING,
SUMMARY TYPE STRING,
ALL TYPE STRING,
SERIALINT TYPE STRING,
KEYTYPE TYPE STRING,
KEYLENGTH TYPE STRING,
SUBJECTKEYID TYPE STRING,
SUBJECTKEYIDXML TYPE STRING,
FINGERPRINTSHA1 TYPE STRING,
PKFINGERPRINT TYPE STRING,
KEYVALUE TYPE STRING,
SIGAVAILABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSPT_S_CERTIFCATE_INFO_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_WSPT_S_CERTIFCATE_INFO_STR-SUBJECT sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-ISSUER sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SERIALNO sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-VALIDFROM sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-VALIDTO sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-ALGID sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-FINGERPRINT sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SUMMARY sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-ALL sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SERIALINT sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-KEYTYPE sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-KEYLENGTH sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SUBJECTKEYID sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SUBJECTKEYIDXML sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-FINGERPRINTSHA1 sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-PKFINGERPRINT sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-KEYVALUE sy-vline 
WA_WSPT_S_CERTIFCATE_INFO_STR-SIGAVAILABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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