ABAP Select data from SAP table DB2DB02IXDYN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2DB02IXDYN 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 DB2DB02IXDYN. 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 DB2DB02IXDYN 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_DB2DB02IXDYN TYPE STANDARD TABLE OF DB2DB02IXDYN,
      WA_DB2DB02IXDYN TYPE DB2DB02IXDYN,
      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: <DB2DB02IXDYN> TYPE DB2DB02IXDYN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2DB02IXDYN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2DB02IXDYN
  INTO TABLE IT_DB2DB02IXDYN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2DB02IXDYN
*  INTO TABLE @DATA(IT_DB2DB02IXDYN2).
*--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_DB2DB02IXDYN INDEX 1 INTO DATA(WA_DB2DB02IXDYN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2DB02IXDYN ASSIGNING <DB2DB02IXDYN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2DB02IXDYN>-IXCREATOR = 1.
<DB2DB02IXDYN>-IXNAME = 1.
<DB2DB02IXDYN>-PART_EXTENSION = 1.
<DB2DB02IXDYN>-DBNAME = 1.
<DB2DB02IXDYN>-IXSPACE = 1.

ENDLOOP.

LOOP AT IT_DB2DB02IXDYN INTO WA_DB2DB02IXDYN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2DB02IXDYN-PARTITIONS, sy-vline,
  WA_DB2DB02IXDYN-EXTENTS, sy-vline,
  WA_DB2DB02IXDYN-EXTENTS_LAST, sy-vline,
  WA_DB2DB02IXDYN-EXTENTS_PERC, sy-vline,
  WA_DB2DB02IXDYN-EXTENTS_FIRST, sy-vline,
  WA_DB2DB02IXDYN-D_EXTENTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2DB02IXDYN 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_DB2DB02IXDYN 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_DB2DB02IXDYN INTO WA_DB2DB02IXDYN.


*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_DB2DB02IXDYN_STR, 
IXCREATOR TYPE STRING,
IXNAME TYPE STRING,
PART_EXTENSION TYPE STRING,
DBNAME TYPE STRING,
IXSPACE TYPE STRING,
PARTITIONS TYPE STRING,
EXTENTS TYPE STRING,
EXTENTS_LAST TYPE STRING,
EXTENTS_PERC TYPE STRING,
EXTENTS_FIRST TYPE STRING,
D_EXTENTS TYPE STRING,
W_EXTENTS TYPE STRING,
M_EXTENTS TYPE STRING,
ALLOCSIZE TYPE STRING,
ALLOCSIZ_LAST TYPE STRING,
ALLOCSIZ_PERC TYPE STRING,
ALLOCSIZ_FIRST TYPE STRING,
D_ALLOCSIZ TYPE STRING,
W_ALLOCSIZ TYPE STRING,
M_ALLOCSIZ TYPE STRING,
FREESIZE TYPE STRING,
FREESIZE_LAST TYPE STRING,
FREESIZE_PERC TYPE STRING,
FREESIZE_FIRST TYPE STRING,
D_FREESIZ TYPE STRING,
W_FREESIZ TYPE STRING,
M_FREESIZ TYPE STRING,
RTS_TOTALENTRIES TYPE STRING,
TOTALENTRIES_LAS TYPE STRING,
TOTALENTRIES_PER TYPE STRING,
TOTALENTRIES_FIR TYPE STRING,
D_TOTALENTRIES TYPE STRING,
W_TOTALENTRIES TYPE STRING,
M_TOTALENTRIES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2DB02IXDYN_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_DB2DB02IXDYN_STR-IXCREATOR sy-vline 
WA_DB2DB02IXDYN_STR-IXNAME sy-vline 
WA_DB2DB02IXDYN_STR-PART_EXTENSION sy-vline 
WA_DB2DB02IXDYN_STR-DBNAME sy-vline 
WA_DB2DB02IXDYN_STR-IXSPACE sy-vline 
WA_DB2DB02IXDYN_STR-PARTITIONS sy-vline 
WA_DB2DB02IXDYN_STR-EXTENTS sy-vline 
WA_DB2DB02IXDYN_STR-EXTENTS_LAST sy-vline 
WA_DB2DB02IXDYN_STR-EXTENTS_PERC sy-vline 
WA_DB2DB02IXDYN_STR-EXTENTS_FIRST sy-vline 
WA_DB2DB02IXDYN_STR-D_EXTENTS sy-vline 
WA_DB2DB02IXDYN_STR-W_EXTENTS sy-vline 
WA_DB2DB02IXDYN_STR-M_EXTENTS sy-vline 
WA_DB2DB02IXDYN_STR-ALLOCSIZE sy-vline 
WA_DB2DB02IXDYN_STR-ALLOCSIZ_LAST sy-vline 
WA_DB2DB02IXDYN_STR-ALLOCSIZ_PERC sy-vline 
WA_DB2DB02IXDYN_STR-ALLOCSIZ_FIRST sy-vline 
WA_DB2DB02IXDYN_STR-D_ALLOCSIZ sy-vline 
WA_DB2DB02IXDYN_STR-W_ALLOCSIZ sy-vline 
WA_DB2DB02IXDYN_STR-M_ALLOCSIZ sy-vline 
WA_DB2DB02IXDYN_STR-FREESIZE sy-vline 
WA_DB2DB02IXDYN_STR-FREESIZE_LAST sy-vline 
WA_DB2DB02IXDYN_STR-FREESIZE_PERC sy-vline 
WA_DB2DB02IXDYN_STR-FREESIZE_FIRST sy-vline 
WA_DB2DB02IXDYN_STR-D_FREESIZ sy-vline 
WA_DB2DB02IXDYN_STR-W_FREESIZ sy-vline 
WA_DB2DB02IXDYN_STR-M_FREESIZ sy-vline 
WA_DB2DB02IXDYN_STR-RTS_TOTALENTRIES sy-vline 
WA_DB2DB02IXDYN_STR-TOTALENTRIES_LAS sy-vline 
WA_DB2DB02IXDYN_STR-TOTALENTRIES_PER sy-vline 
WA_DB2DB02IXDYN_STR-TOTALENTRIES_FIR sy-vline 
WA_DB2DB02IXDYN_STR-D_TOTALENTRIES sy-vline 
WA_DB2DB02IXDYN_STR-W_TOTALENTRIES sy-vline 
WA_DB2DB02IXDYN_STR-M_TOTALENTRIES sy-vline      INTO ld_text SEPARATED BY SPACE.

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