ABAP Select data from SAP table DB2_VIEW_TABLE_DETAILS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2_VIEW_TABLE_DETAILS 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 DB2_VIEW_TABLE_DETAILS. 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 DB2_VIEW_TABLE_DETAILS 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_DB2_VIEW_TABLE_DETAILS TYPE STANDARD TABLE OF DB2_VIEW_TABLE_DETAILS,
      WA_DB2_VIEW_TABLE_DETAILS TYPE DB2_VIEW_TABLE_DETAILS,
      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: <DB2_VIEW_TABLE_DETAILS> TYPE DB2_VIEW_TABLE_DETAILS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2_VIEW_TABLE_DETAILS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2_VIEW_TABLE_DETAILS
  INTO TABLE IT_DB2_VIEW_TABLE_DETAILS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2_VIEW_TABLE_DETAILS
*  INTO TABLE @DATA(IT_DB2_VIEW_TABLE_DETAILS2).
*--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_DB2_VIEW_TABLE_DETAILS INDEX 1 INTO DATA(WA_DB2_VIEW_TABLE_DETAILS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2_VIEW_TABLE_DETAILS ASSIGNING <DB2_VIEW_TABLE_DETAILS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2_VIEW_TABLE_DETAILS>-GENERAL_DATA = 1.
<DB2_VIEW_TABLE_DETAILS>-BASE_TABLE_NAME = 1.
<DB2_VIEW_TABLE_DETAILS>-BASE_TABLE_CREATOR = 1.
<DB2_VIEW_TABLE_DETAILS>-DBNAME = 1.
<DB2_VIEW_TABLE_DETAILS>-SPACENAME = 1.

ENDLOOP.

LOOP AT IT_DB2_VIEW_TABLE_DETAILS INTO WA_DB2_VIEW_TABLE_DETAILS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2_VIEW_TABLE_DETAILS-OBJECT_TYPE, sy-vline,
  WA_DB2_VIEW_TABLE_DETAILS-SPACE_TYPE, sy-vline,
  WA_DB2_VIEW_TABLE_DETAILS-NPAGES, sy-vline,
  WA_DB2_VIEW_TABLE_DETAILS-RECLENGTH, sy-vline,
  WA_DB2_VIEW_TABLE_DETAILS-CREATEDTS, sy-vline,
  WA_DB2_VIEW_TABLE_DETAILS-ALTERTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2_VIEW_TABLE_DETAILS 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_DB2_VIEW_TABLE_DETAILS 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_DB2_VIEW_TABLE_DETAILS INTO WA_DB2_VIEW_TABLE_DETAILS.


*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_DB2_VIEW_TABLE_DETAILS_STR, 
GENERAL_DATA TYPE STRING,
BASE_TABLE_NAME TYPE STRING,
BASE_TABLE_CREATOR TYPE STRING,
DBNAME TYPE STRING,
SPACENAME TYPE STRING,
OBJECT_TYPE TYPE STRING,
SPACE_TYPE TYPE STRING,
NPAGES TYPE STRING,
RECLENGTH TYPE STRING,
CREATEDTS TYPE STRING,
ALTERTS TYPE STRING,
PCTROWCOMP TYPE STRING,
STATSTIME TYPE STRING,
CARDF TYPE STRING,
ENCODING_SCHEME TYPE STRING,
TAB_TYPE TYPE STRING,
SPACE_CREATOR TYPE STRING,
TAB_DETAILS TYPE STRING,
NUM_PART TYPE STRING,
OBJECT_TYPE TYPE STRING,
SPACE_TYPE TYPE STRING,
ALLOC_KB TYPE STRING,
USED_KB TYPE STRING,
BPOOL TYPE STRING,
PGSIZE TYPE STRING,
NTABLES TYPE STRING,
SEGSIZE TYPE STRING,
STATSTIME TYPE STRING,
CREATEDTS TYPE STRING,
ALTEREDTS TYPE STRING,
MAXROWS TYPE STRING,
DSSIZE TYPE STRING,
AVGROWLEN TYPE STRING,
MAXPARTITIONS TYPE STRING,
TAB_STRUCTURE TYPE STRING,
IT_COLS TYPE STRING,
TAB_HISTORY TYPE STRING,
FROM_INTERVAL TYPE STRING,
TO_INTERVAL TYPE STRING,
IT_TABLES TYPE STRING,
RANGE TYPE STRING,
RANGE_LIST TYPE STRING,
COLLAPSED TYPE STRING,
EXPANDED TYPE STRING,
RANGE_PREV TYPE STRING,
HIST_KEEP_DAYS TYPE STRING,
HIST_KEEP_WEEKS TYPE STRING,
HIST_KEEP_MONTHS TYPE STRING,
TAB_INDEXES TYPE STRING,
IT_COLS TYPE STRING,
TAB_PARTITIONS TYPE STRING,
IT_PARTITIONS TYPE STRING,
TAB_PART_DETAILS TYPE STRING,
PARTNO TYPE STRING,
ALLOC_KB TYPE STRING,
USED_KB TYPE STRING,
PQTY TYPE STRING,
SQTY TYPE STRING,
STORNAME TYPE STRING,
FARINDREF TYPE STRING,
NEARINDREF TYPE STRING,
PERCACTIVE TYPE STRING,
LIMITKEY TYPE STRING,
FREEPAGE TYPE STRING,
PCTFREE TYPE STRING,
COMPRESS TYPE STRING,
PAGE_SAVE TYPE STRING,
STATSTIME TYPE STRING,
GBPCACHE TYPE STRING,
CARDF TYPE STRING,
ALTEREDTS TYPE STRING,
DSNUM TYPE STRING,
EXTENTS TYPE STRING,
LOGICAL_PART TYPE STRING,
CREATEDTS TYPE STRING,
AVGROWLEN TYPE STRING,
ROW_FORMAT TYPE STRING,
REORG_LR_TS TYPE STRING,
DSSIZE TYPE STRING,
FREE_SPACE TYPE STRING,
PCT_USED TYPE STRING,
LIST_VOL TYPE STRING,
TAB_LOBS TYPE STRING,
IT_LOBS TYPE STRING,
TAB_BASE TYPE STRING,
TABLE TYPE STRING,
PARTLIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2_VIEW_TABLE_DETAILS_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_DB2_VIEW_TABLE_DETAILS_STR-GENERAL_DATA sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-BASE_TABLE_NAME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-BASE_TABLE_CREATOR sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-DBNAME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SPACENAME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-OBJECT_TYPE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SPACE_TYPE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-NPAGES sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-RECLENGTH sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-CREATEDTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ALTERTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PCTROWCOMP sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-STATSTIME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-CARDF sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ENCODING_SCHEME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_TYPE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SPACE_CREATOR sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_DETAILS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-NUM_PART sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-OBJECT_TYPE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SPACE_TYPE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ALLOC_KB sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-USED_KB sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-BPOOL sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PGSIZE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-NTABLES sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SEGSIZE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-STATSTIME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-CREATEDTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ALTEREDTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-MAXROWS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-DSSIZE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-AVGROWLEN sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-MAXPARTITIONS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_STRUCTURE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-IT_COLS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_HISTORY sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-FROM_INTERVAL sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TO_INTERVAL sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-IT_TABLES sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-RANGE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-RANGE_LIST sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-COLLAPSED sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-EXPANDED sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-RANGE_PREV sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-HIST_KEEP_DAYS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-HIST_KEEP_WEEKS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-HIST_KEEP_MONTHS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_INDEXES sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-IT_COLS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_PARTITIONS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-IT_PARTITIONS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_PART_DETAILS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PARTNO sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ALLOC_KB sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-USED_KB sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PQTY sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-SQTY sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-STORNAME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-FARINDREF sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-NEARINDREF sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PERCACTIVE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-LIMITKEY sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-FREEPAGE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PCTFREE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-COMPRESS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PAGE_SAVE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-STATSTIME sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-GBPCACHE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-CARDF sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ALTEREDTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-DSNUM sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-EXTENTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-LOGICAL_PART sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-CREATEDTS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-AVGROWLEN sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-ROW_FORMAT sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-REORG_LR_TS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-DSSIZE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-FREE_SPACE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PCT_USED sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-LIST_VOL sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_LOBS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-IT_LOBS sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TAB_BASE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-TABLE sy-vline 
WA_DB2_VIEW_TABLE_DETAILS_STR-PARTLIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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