ABAP Select data from SAP table LSOTAC_ITEMSTATISTIK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSOTAC_ITEMSTATISTIK
*  INTO TABLE @DATA(IT_LSOTAC_ITEMSTATISTIK2).
*--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_LSOTAC_ITEMSTATISTIK INDEX 1 INTO DATA(WA_LSOTAC_ITEMSTATISTIK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSOTAC_ITEMSTATISTIK>-ASSESSMENT = 1.
<LSOTAC_ITEMSTATISTIK>-SEKTION = 1.
<LSOTAC_ITEMSTATISTIK>-TITLE = 1.
<LSOTAC_ITEMSTATISTIK>-ITGROUP = 1.
<LSOTAC_ITEMSTATISTIK>-GRPTITLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSOTAC_ITEMSTATISTIK-ASSESSMENTDATE, sy-vline,
  WA_LSOTAC_ITEMSTATISTIK-ITEM, sy-vline,
  WA_LSOTAC_ITEMSTATISTIK-ITEMN, sy-vline,
  WA_LSOTAC_ITEMSTATISTIK-ITEMMAX, sy-vline,
  WA_LSOTAC_ITEMSTATISTIK-ITEMSUM, sy-vline,
  WA_LSOTAC_ITEMSTATISTIK-MEAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSOTAC_ITEMSTATISTIK 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_LSOTAC_ITEMSTATISTIK 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_LSOTAC_ITEMSTATISTIK INTO WA_LSOTAC_ITEMSTATISTIK.


*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_LSOTAC_ITEMSTATISTIK_STR, 
ASSESSMENT TYPE STRING,
SEKTION TYPE STRING,
TITLE TYPE STRING,
ITGROUP TYPE STRING,
GRPTITLE TYPE STRING,
ASSESSMENTDATE TYPE STRING,
ITEM TYPE STRING,
ITEMN TYPE STRING,
ITEMMAX TYPE STRING,
ITEMSUM TYPE STRING,
MEAN TYPE STRING,
ITEMPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSOTAC_ITEMSTATISTIK_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_LSOTAC_ITEMSTATISTIK_STR-ASSESSMENT sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-SEKTION sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-TITLE sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITGROUP sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-GRPTITLE sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ASSESSMENTDATE sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITEM sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITEMN sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITEMMAX sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITEMSUM sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-MEAN sy-vline 
WA_LSOTAC_ITEMSTATISTIK_STR-ITEMPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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