ABAP Select data from SAP table /ISDFPS/ST_LM_COLLISION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/ST_LM_COLLISION 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 /ISDFPS/ST_LM_COLLISION. 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 /ISDFPS/ST_LM_COLLISION 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_/ISDFPS/ST_LM_COLLISION TYPE STANDARD TABLE OF /ISDFPS/ST_LM_COLLISION,
      WA_/ISDFPS/ST_LM_COLLISION TYPE /ISDFPS/ST_LM_COLLISION,
      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: </ISDFPS/ST_LM_COLLISION> TYPE /ISDFPS/ST_LM_COLLISION.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ST_LM_COLLISION
  INTO TABLE IT_/ISDFPS/ST_LM_COLLISION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ST_LM_COLLISION
*  INTO TABLE @DATA(IT_/ISDFPS/ST_LM_COLLISION2).
*--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_/ISDFPS/ST_LM_COLLISION INDEX 1 INTO DATA(WA_/ISDFPS/ST_LM_COLLISION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ST_LM_COLLISION ASSIGNING </ISDFPS/ST_LM_COLLISION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ST_LM_COLLISION>-OBJKEY = 1.
</ISDFPS/ST_LM_COLLISION>-OBJKTEXT = 1.
</ISDFPS/ST_LM_COLLISION>-STARTT = 1.
</ISDFPS/ST_LM_COLLISION>-STARTD = 1.
</ISDFPS/ST_LM_COLLISION>-ENDET = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ST_LM_COLLISION INTO WA_/ISDFPS/ST_LM_COLLISION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ST_LM_COLLISION-ENDED, sy-vline,
  WA_/ISDFPS/ST_LM_COLLISION-STARTTZ, sy-vline,
  WA_/ISDFPS/ST_LM_COLLISION-ENDETZ, sy-vline,
  WA_/ISDFPS/ST_LM_COLLISION-EVTOBJKEY, sy-vline,
  WA_/ISDFPS/ST_LM_COLLISION-EVTOBJTYPE, sy-vline,
  WA_/ISDFPS/ST_LM_COLLISION-EVTOBJSTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ST_LM_COLLISION 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_/ISDFPS/ST_LM_COLLISION 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_/ISDFPS/ST_LM_COLLISION INTO WA_/ISDFPS/ST_LM_COLLISION.


*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_/ISDFPS/ST_LM_COLLISION_STR, 
OBJKEY TYPE STRING,
OBJKTEXT TYPE STRING,
STARTT TYPE STRING,
STARTD TYPE STRING,
ENDET TYPE STRING,
ENDED TYPE STRING,
STARTTZ TYPE STRING,
ENDETZ TYPE STRING,
EVTOBJKEY TYPE STRING,
EVTOBJTYPE TYPE STRING,
EVTOBJSTYPE TYPE STRING,
EVTOBJKTXT TYPE STRING,
START_TS TYPE STRING,
END_TS TYPE STRING,
ITYPE TYPE STRING,
ETYPE TYPE STRING,
EICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/ST_LM_COLLISION_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_/ISDFPS/ST_LM_COLLISION_STR-OBJKEY sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-OBJKTEXT sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-STARTT sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-STARTD sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-ENDET sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-ENDED sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-STARTTZ sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-ENDETZ sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-EVTOBJKEY sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-EVTOBJTYPE sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-EVTOBJSTYPE sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-EVTOBJKTXT sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-START_TS sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-END_TS sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-ITYPE sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-ETYPE sy-vline 
WA_/ISDFPS/ST_LM_COLLISION_STR-EICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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