ABAP Select data from SAP table OXT_CUS_EXTVER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OXT_CUS_EXTVER
*  INTO TABLE @DATA(IT_OXT_CUS_EXTVER2).
*--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_OXT_CUS_EXTVER INDEX 1 INTO DATA(WA_OXT_CUS_EXTVER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OXT_CUS_EXTVER>-MANDT = 1.
<OXT_CUS_EXTVER>-PROJECTID = 1.
<OXT_CUS_EXTVER>-EXTENSIONID = 1.
<OXT_CUS_EXTVER>-EXTVERSION = 1.
<OXT_CUS_EXTVER>-PARAMSETGUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OXT_CUS_EXTVER-TASKPARAMGUID, sy-vline,
  WA_OXT_CUS_EXTVER-EXTSTATUS, sy-vline,
  WA_OXT_CUS_EXTVER-ERRFLAG, sy-vline,
  WA_OXT_CUS_EXTVER-ARCHIVEFLAG, sy-vline,
  WA_OXT_CUS_EXTVER-CREDAT, sy-vline,
  WA_OXT_CUS_EXTVER-CRETIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OXT_CUS_EXTVER 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_OXT_CUS_EXTVER 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_OXT_CUS_EXTVER INTO WA_OXT_CUS_EXTVER.


*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_OXT_CUS_EXTVER_STR, 
MANDT TYPE STRING,
PROJECTID TYPE STRING,
EXTENSIONID TYPE STRING,
EXTVERSION TYPE STRING,
PARAMSETGUID TYPE STRING,
TASKPARAMGUID TYPE STRING,
EXTSTATUS TYPE STRING,
ERRFLAG TYPE STRING,
ARCHIVEFLAG TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
CREUSER TYPE STRING,
CHGDAT TYPE STRING,
CHGTIM TYPE STRING,
CHGUSER TYPE STRING,
PRODAT TYPE STRING,
PROTIM TYPE STRING,
PROUSER TYPE STRING,
QNAME TYPE STRING,
TRANSACTIONID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OXT_CUS_EXTVER_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_OXT_CUS_EXTVER_STR-MANDT sy-vline 
WA_OXT_CUS_EXTVER_STR-PROJECTID sy-vline 
WA_OXT_CUS_EXTVER_STR-EXTENSIONID sy-vline 
WA_OXT_CUS_EXTVER_STR-EXTVERSION sy-vline 
WA_OXT_CUS_EXTVER_STR-PARAMSETGUID sy-vline 
WA_OXT_CUS_EXTVER_STR-TASKPARAMGUID sy-vline 
WA_OXT_CUS_EXTVER_STR-EXTSTATUS sy-vline 
WA_OXT_CUS_EXTVER_STR-ERRFLAG sy-vline 
WA_OXT_CUS_EXTVER_STR-ARCHIVEFLAG sy-vline 
WA_OXT_CUS_EXTVER_STR-CREDAT sy-vline 
WA_OXT_CUS_EXTVER_STR-CRETIM sy-vline 
WA_OXT_CUS_EXTVER_STR-CREUSER sy-vline 
WA_OXT_CUS_EXTVER_STR-CHGDAT sy-vline 
WA_OXT_CUS_EXTVER_STR-CHGTIM sy-vline 
WA_OXT_CUS_EXTVER_STR-CHGUSER sy-vline 
WA_OXT_CUS_EXTVER_STR-PRODAT sy-vline 
WA_OXT_CUS_EXTVER_STR-PROTIM sy-vline 
WA_OXT_CUS_EXTVER_STR-PROUSER sy-vline 
WA_OXT_CUS_EXTVER_STR-QNAME sy-vline 
WA_OXT_CUS_EXTVER_STR-TRANSACTIONID sy-vline      INTO ld_text SEPARATED BY SPACE.

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