ABAP Select data from SAP table DB2_VIEW_IX_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_IX_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_IX_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_IX_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_IX_DETAILS TYPE STANDARD TABLE OF DB2_VIEW_IX_DETAILS,
      WA_DB2_VIEW_IX_DETAILS TYPE DB2_VIEW_IX_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_IX_DETAILS> TYPE DB2_VIEW_IX_DETAILS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2_VIEW_IX_DETAILS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2_VIEW_IX_DETAILS
  INTO TABLE IT_DB2_VIEW_IX_DETAILS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2_VIEW_IX_DETAILS
*  INTO TABLE @DATA(IT_DB2_VIEW_IX_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_IX_DETAILS INDEX 1 INTO DATA(WA_DB2_VIEW_IX_DETAILS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2_VIEW_IX_DETAILS ASSIGNING <DB2_VIEW_IX_DETAILS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2_VIEW_IX_DETAILS>-GENERAL_DATA = 1.
<DB2_VIEW_IX_DETAILS>-NAME = 1.
<DB2_VIEW_IX_DETAILS>-CREATOR = 1.
<DB2_VIEW_IX_DETAILS>-TBNAME = 1.
<DB2_VIEW_IX_DETAILS>-TBCREATOR = 1.

ENDLOOP.

LOOP AT IT_DB2_VIEW_IX_DETAILS INTO WA_DB2_VIEW_IX_DETAILS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2_VIEW_IX_DETAILS-DB, sy-vline,
  WA_DB2_VIEW_IX_DETAILS-IXSPACE, sy-vline,
  WA_DB2_VIEW_IX_DETAILS-TYPE, sy-vline,
  WA_DB2_VIEW_IX_DETAILS-UNIQUE_RULE, sy-vline,
  WA_DB2_VIEW_IX_DETAILS-CLUSTER, sy-vline,
  WA_DB2_VIEW_IX_DETAILS-BP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2_VIEW_IX_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_IX_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_IX_DETAILS INTO WA_DB2_VIEW_IX_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_IX_DETAILS_STR, 
GENERAL_DATA TYPE STRING,
NAME TYPE STRING,
CREATOR TYPE STRING,
TBNAME TYPE STRING,
TBCREATOR TYPE STRING,
DB TYPE STRING,
IXSPACE TYPE STRING,
TYPE TYPE STRING,
UNIQUE_RULE TYPE STRING,
CLUSTER TYPE STRING,
BP TYPE STRING,
DS_SIZE TYPE STRING,
COMPRESSED TYPE STRING,
CLUSTERING 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,
LEAFDIST TYPE STRING,
LIMITKEY TYPE STRING,
FREEPAGE TYPE STRING,
PCT_FREE TYPE STRING,
STATSTIME TYPE STRING,
GBPCACHE TYPE STRING,
FAROFF TYPE STRING,
NEAROFF TYPE STRING,
#ROWS TYPE STRING,
ALTEREDTS TYPE STRING,
#DS TYPE STRING,
#EXTENTS TYPE STRING,
PSEUDO_DEL TYPE STRING,
LEAFNEAR TYPE STRING,
LEAFFAR TYPE STRING,
CREATEDTS TYPE STRING,
AVGKEYLEN TYPE STRING,
DSSIZE TYPE STRING,
TAB_HISTORY TYPE STRING,
FROM_INTERVAL TYPE STRING,
TO_INTERVAL TYPE STRING,
IT_IX 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_STRUCTURE TYPE STRING,
IT_COLS TYPE STRING,
TAB_PARTITIONS TYPE STRING,
IT_PARTITIONS TYPE STRING,
TAB_DATASETS TYPE STRING,
IT_DATASETS TYPE STRING,
TAB_DETAILS TYPE STRING,
ALLOC_KB TYPE STRING,
USED_KB TYPE STRING,
CREATEDTS TYPE STRING,
CLUSTERRATIO TYPE STRING,
FIRSTKEY TYPE STRING,
FULLKEY TYPE STRING,
LAST_ALTER TYPE STRING,
PGSIZE TYPE STRING,
NLEAF TYPE STRING,
NLEVELS TYPE STRING,
LAST_RUNST TYPE STRING,
AVG_LEN TYPE STRING,
PADDED TYPE STRING,
NUM_PART TYPE STRING,
PAGENUM TYPE STRING,
PARTLIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2_VIEW_IX_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_IX_DETAILS_STR-GENERAL_DATA sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-NAME sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CREATOR sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TBNAME sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TBCREATOR sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-DB sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-IXSPACE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TYPE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-UNIQUE_RULE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CLUSTER sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-BP sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-DS_SIZE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-COMPRESSED sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CLUSTERING sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_PART_DETAILS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PARTNO sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-ALLOC_KB sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-USED_KB sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PQTY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-SQTY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-STORNAME sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LEAFDIST sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LIMITKEY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-FREEPAGE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PCT_FREE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-STATSTIME sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-GBPCACHE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-FAROFF sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-NEAROFF sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-#ROWS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-ALTEREDTS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-#DS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-#EXTENTS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PSEUDO_DEL sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LEAFNEAR sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LEAFFAR sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CREATEDTS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-AVGKEYLEN sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-DSSIZE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_HISTORY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-FROM_INTERVAL sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TO_INTERVAL sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-IT_IX sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-RANGE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-RANGE_LIST sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-COLLAPSED sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-EXPANDED sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-RANGE_PREV sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-HIST_KEEP_DAYS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-HIST_KEEP_WEEKS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-HIST_KEEP_MONTHS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_STRUCTURE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-IT_COLS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_PARTITIONS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-IT_PARTITIONS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_DATASETS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-IT_DATASETS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-TAB_DETAILS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-ALLOC_KB sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-USED_KB sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CREATEDTS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-CLUSTERRATIO sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-FIRSTKEY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-FULLKEY sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LAST_ALTER sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PGSIZE sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-NLEAF sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-NLEVELS sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-LAST_RUNST sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-AVG_LEN sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PADDED sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-NUM_PART sy-vline 
WA_DB2_VIEW_IX_DETAILS_STR-PAGENUM sy-vline 
WA_DB2_VIEW_IX_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.