ABAP Select data from SAP table DB2IXDETLP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2IXDETLP 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 DB2IXDETLP. 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 DB2IXDETLP 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_DB2IXDETLP TYPE STANDARD TABLE OF DB2IXDETLP,
      WA_DB2IXDETLP TYPE DB2IXDETLP,
      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: <DB2IXDETLP> TYPE DB2IXDETLP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2IXDETLP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2IXDETLP
  INTO TABLE IT_DB2IXDETLP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2IXDETLP
*  INTO TABLE @DATA(IT_DB2IXDETLP2).
*--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_DB2IXDETLP INDEX 1 INTO DATA(WA_DB2IXDETLP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2IXDETLP ASSIGNING <DB2IXDETLP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2IXDETLP>-NAME = 1.
<DB2IXDETLP>-CREATOR = 1.
<DB2IXDETLP>-PART = 1.
<DB2IXDETLP>-STORNAME = 1.
<DB2IXDETLP>-VCATNAME = 1.

ENDLOOP.

LOOP AT IT_DB2IXDETLP INTO WA_DB2IXDETLP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2IXDETLP-LEAFDIST, sy-vline,
  WA_DB2IXDETLP-FREEPAGE, sy-vline,
  WA_DB2IXDETLP-PCTFREE, sy-vline,
  WA_DB2IXDETLP-STATSTIME, sy-vline,
  WA_DB2IXDETLP-GBPCACHE, sy-vline,
  WA_DB2IXDETLP-FAROFFPOSF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2IXDETLP 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_DB2IXDETLP 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_DB2IXDETLP INTO WA_DB2IXDETLP.


*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_DB2IXDETLP_STR, 
NAME TYPE STRING,
CREATOR TYPE STRING,
PART TYPE STRING,
STORNAME TYPE STRING,
VCATNAME TYPE STRING,
LEAFDIST TYPE STRING,
FREEPAGE TYPE STRING,
PCTFREE TYPE STRING,
STATSTIME TYPE STRING,
GBPCACHE TYPE STRING,
FAROFFPOSF TYPE STRING,
NEAROFFPOS TYPE STRING,
CARDF TYPE STRING,
SPACE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2IXDETLP_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_DB2IXDETLP_STR-NAME sy-vline 
WA_DB2IXDETLP_STR-CREATOR sy-vline 
WA_DB2IXDETLP_STR-PART sy-vline 
WA_DB2IXDETLP_STR-STORNAME sy-vline 
WA_DB2IXDETLP_STR-VCATNAME sy-vline 
WA_DB2IXDETLP_STR-LEAFDIST sy-vline 
WA_DB2IXDETLP_STR-FREEPAGE sy-vline 
WA_DB2IXDETLP_STR-PCTFREE sy-vline 
WA_DB2IXDETLP_STR-STATSTIME sy-vline 
WA_DB2IXDETLP_STR-GBPCACHE sy-vline 
WA_DB2IXDETLP_STR-FAROFFPOSF sy-vline 
WA_DB2IXDETLP_STR-NEAROFFPOS sy-vline 
WA_DB2IXDETLP_STR-CARDF sy-vline 
WA_DB2IXDETLP_STR-SPACE sy-vline      INTO ld_text SEPARATED BY SPACE.

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