ABAP Select data from SAP table DB2TSBACK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2TSBACK 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 DB2TSBACK. 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 DB2TSBACK 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_DB2TSBACK TYPE STANDARD TABLE OF DB2TSBACK,
      WA_DB2TSBACK TYPE DB2TSBACK,
      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: <DB2TSBACK> TYPE DB2TSBACK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2TSBACK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2TSBACK
  INTO TABLE IT_DB2TSBACK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2TSBACK
*  INTO TABLE @DATA(IT_DB2TSBACK2).
*--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_DB2TSBACK INDEX 1 INTO DATA(WA_DB2TSBACK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2TSBACK ASSIGNING <DB2TSBACK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2TSBACK>-DATE_ANA = 1.
<DB2TSBACK>-TIME_ANA = 1.
<DB2TSBACK>-DBNAM = 1.
<DB2TSBACK>-TSNAM = 1.
<DB2TSBACK>-TSPART = 1.

ENDLOOP.

LOOP AT IT_DB2TSBACK INTO WA_DB2TSBACK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2TSBACK-NAME, sy-vline,
  WA_DB2TSBACK-CREATOR, sy-vline,
  WA_DB2TSBACK-BPOOL, sy-vline,
  WA_DB2TSBACK-LOCKRULE, sy-vline,
  WA_DB2TSBACK-LOCKMAX, sy-vline,
  WA_DB2TSBACK-CLOSERULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2TSBACK 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_DB2TSBACK 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_DB2TSBACK INTO WA_DB2TSBACK.


*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_DB2TSBACK_STR, 
DATE_ANA TYPE STRING,
TIME_ANA TYPE STRING,
DBNAM TYPE STRING,
TSNAM TYPE STRING,
TSPART TYPE STRING,
NAME TYPE STRING,
CREATOR TYPE STRING,
BPOOL TYPE STRING,
LOCKRULE TYPE STRING,
LOCKMAX TYPE STRING,
CLOSERULE TYPE STRING,
ENCODING TYPE STRING,
LOCKPART TYPE STRING,
MAXROWS TYPE STRING,
PARTITIONS TYPE STRING,
TYPE TYPE STRING,
SEGSIZE TYPE STRING,
SPACE TYPE STRING,
NTABLES TYPE STRING,
STATUS TYPE STRING,
STATSTIME TYPE STRING,
ERASERULE TYPE STRING,
DBNAME TYPE STRING,
DSETPASS TYPE STRING,
LOG TYPE STRING,
DSSIZE TYPE STRING,
PARTNR TYPE STRING,
OPERATION TYPE STRING,
NDAYS TYPE STRING,
PERCOFFPOS TYPE STRING,
PERCINDREF TYPE STRING,
PERCDROP TYPE STRING,
EXTENTS TYPE STRING,
REASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2TSBACK_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_DB2TSBACK_STR-DATE_ANA sy-vline 
WA_DB2TSBACK_STR-TIME_ANA sy-vline 
WA_DB2TSBACK_STR-DBNAM sy-vline 
WA_DB2TSBACK_STR-TSNAM sy-vline 
WA_DB2TSBACK_STR-TSPART sy-vline 
WA_DB2TSBACK_STR-NAME sy-vline 
WA_DB2TSBACK_STR-CREATOR sy-vline 
WA_DB2TSBACK_STR-BPOOL sy-vline 
WA_DB2TSBACK_STR-LOCKRULE sy-vline 
WA_DB2TSBACK_STR-LOCKMAX sy-vline 
WA_DB2TSBACK_STR-CLOSERULE sy-vline 
WA_DB2TSBACK_STR-ENCODING sy-vline 
WA_DB2TSBACK_STR-LOCKPART sy-vline 
WA_DB2TSBACK_STR-MAXROWS sy-vline 
WA_DB2TSBACK_STR-PARTITIONS sy-vline 
WA_DB2TSBACK_STR-TYPE sy-vline 
WA_DB2TSBACK_STR-SEGSIZE sy-vline 
WA_DB2TSBACK_STR-SPACE sy-vline 
WA_DB2TSBACK_STR-NTABLES sy-vline 
WA_DB2TSBACK_STR-STATUS sy-vline 
WA_DB2TSBACK_STR-STATSTIME sy-vline 
WA_DB2TSBACK_STR-ERASERULE sy-vline 
WA_DB2TSBACK_STR-DBNAME sy-vline 
WA_DB2TSBACK_STR-DSETPASS sy-vline 
WA_DB2TSBACK_STR-LOG sy-vline 
WA_DB2TSBACK_STR-DSSIZE sy-vline 
WA_DB2TSBACK_STR-PARTNR sy-vline 
WA_DB2TSBACK_STR-OPERATION sy-vline 
WA_DB2TSBACK_STR-NDAYS sy-vline 
WA_DB2TSBACK_STR-PERCOFFPOS sy-vline 
WA_DB2TSBACK_STR-PERCINDREF sy-vline 
WA_DB2TSBACK_STR-PERCDROP sy-vline 
WA_DB2TSBACK_STR-EXTENTS sy-vline 
WA_DB2TSBACK_STR-REASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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