ABAP Select data from SAP table ILTTSGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ILTTSGR
*  INTO TABLE @DATA(IT_ILTTSGR2).
*--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_ILTTSGR INDEX 1 INTO DATA(WA_ILTTSGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ILTTSGR>-MANDT = 1.
<ILTTSGR>-LGLCNTNTMTASKGROUPUUID = 1.
<ILTTSGR>-LEGALTRANSACTIONUUID = 1.
<ILTTSGR>-LGLCNTNTMTASKGROUPINTUUID = 1.
<ILTTSGR>-LGLCNTNTMACTIVELGLTRANSUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ILTTSGR-LGLCNTNTMISWRKFLWTMPLCNTXT, sy-vline,
  WA_ILTTSGR-LGLCNTNTMTASKGROUPNAME, sy-vline,
  WA_ILTTSGR-LGLCNTNTMCREATEDUTCDATETIME, sy-vline,
  WA_ILTTSGR-LGLCNTNTMCREATEDBYUSER, sy-vline,
  WA_ILTTSGR-LGLCNTNTMCHANGEDUTCDATETIME, sy-vline,
  WA_ILTTSGR-LGLCNTNTMCHANGEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ILTTSGR 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_ILTTSGR 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_ILTTSGR INTO WA_ILTTSGR.


*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_ILTTSGR_STR, 
MANDT TYPE STRING,
LGLCNTNTMTASKGROUPUUID TYPE STRING,
LEGALTRANSACTIONUUID TYPE STRING,
LGLCNTNTMTASKGROUPINTUUID TYPE STRING,
LGLCNTNTMACTIVELGLTRANSUUID TYPE STRING,
LGLCNTNTMISWRKFLWTMPLCNTXT TYPE STRING,
LGLCNTNTMTASKGROUPNAME TYPE STRING,
LGLCNTNTMCREATEDUTCDATETIME TYPE STRING,
LGLCNTNTMCREATEDBYUSER TYPE STRING,
LGLCNTNTMCHANGEDUTCDATETIME TYPE STRING,
LGLCNTNTMCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ILTTSGR_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_ILTTSGR_STR-MANDT sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMTASKGROUPUUID sy-vline 
WA_ILTTSGR_STR-LEGALTRANSACTIONUUID sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMTASKGROUPINTUUID sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMACTIVELGLTRANSUUID sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMISWRKFLWTMPLCNTXT sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMTASKGROUPNAME sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMCREATEDUTCDATETIME sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMCREATEDBYUSER sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMCHANGEDUTCDATETIME sy-vline 
WA_ILTTSGR_STR-LGLCNTNTMCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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