ABAP Select data from SAP table DB2TSBACKN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2TSBACKN 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 DB2TSBACKN. 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 DB2TSBACKN 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_DB2TSBACKN TYPE STANDARD TABLE OF DB2TSBACKN,
      WA_DB2TSBACKN TYPE DB2TSBACKN,
      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: <DB2TSBACKN> TYPE DB2TSBACKN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2TSBACKN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2TSBACKN
  INTO TABLE IT_DB2TSBACKN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2TSBACKN
*  INTO TABLE @DATA(IT_DB2TSBACKN2).
*--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_DB2TSBACKN INDEX 1 INTO DATA(WA_DB2TSBACKN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2TSBACKN ASSIGNING <DB2TSBACKN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2TSBACKN>-DATE_ANA = 1.
<DB2TSBACKN>-TIME_ANA = 1.
<DB2TSBACKN>-DBNAME = 1.
<DB2TSBACKN>-TSNAME = 1.
<DB2TSBACKN>-PARTI = 1.

ENDLOOP.

LOOP AT IT_DB2TSBACKN INTO WA_DB2TSBACKN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2TSBACKN-CREATOR, sy-vline,
  WA_DB2TSBACKN-OBJTYPE, sy-vline,
  WA_DB2TSBACKN-OBJSTATUS, sy-vline,
  WA_DB2TSBACKN-COPYREC, sy-vline,
  WA_DB2TSBACKN-EXCTABLE, sy-vline,
  WA_DB2TSBACKN-ASSOCTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2TSBACKN 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_DB2TSBACKN 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_DB2TSBACKN INTO WA_DB2TSBACKN.


*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_DB2TSBACKN_STR, 
DATE_ANA TYPE STRING,
TIME_ANA TYPE STRING,
DBNAME TYPE STRING,
TSNAME TYPE STRING,
PARTI TYPE STRING,
CREATOR TYPE STRING,
OBJTYPE TYPE STRING,
OBJSTATUS TYPE STRING,
COPYREC TYPE STRING,
EXCTABLE TYPE STRING,
ASSOCTS TYPE STRING,
COPYTIME TYPE STRING,
LOADREPLTI TYPE STRING,
REBUILDTIM TYPE STRING,
FCUPDPGS TYPE STRING,
FCCHGPCT TYPE STRING,
FCDAYSCOPY TYPE STRING,
FCINDEXSIZ TYPE STRING,
REORGTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2TSBACKN_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_DB2TSBACKN_STR-DATE_ANA sy-vline 
WA_DB2TSBACKN_STR-TIME_ANA sy-vline 
WA_DB2TSBACKN_STR-DBNAME sy-vline 
WA_DB2TSBACKN_STR-TSNAME sy-vline 
WA_DB2TSBACKN_STR-PARTI sy-vline 
WA_DB2TSBACKN_STR-CREATOR sy-vline 
WA_DB2TSBACKN_STR-OBJTYPE sy-vline 
WA_DB2TSBACKN_STR-OBJSTATUS sy-vline 
WA_DB2TSBACKN_STR-COPYREC sy-vline 
WA_DB2TSBACKN_STR-EXCTABLE sy-vline 
WA_DB2TSBACKN_STR-ASSOCTS sy-vline 
WA_DB2TSBACKN_STR-COPYTIME sy-vline 
WA_DB2TSBACKN_STR-LOADREPLTI sy-vline 
WA_DB2TSBACKN_STR-REBUILDTIM sy-vline 
WA_DB2TSBACKN_STR-FCUPDPGS sy-vline 
WA_DB2TSBACKN_STR-FCCHGPCT sy-vline 
WA_DB2TSBACKN_STR-FCDAYSCOPY sy-vline 
WA_DB2TSBACKN_STR-FCINDEXSIZ sy-vline 
WA_DB2TSBACKN_STR-REORGTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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