ABAP Select data from SAP table SIT_DEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SIT_DEF
*  INTO TABLE @DATA(IT_SIT_DEF2).
*--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_SIT_DEF INDEX 1 INTO DATA(WA_SIT_DEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SIT_DEF>-CLIENT = 1.
<SIT_DEF>-SITNDEFINITIONID = 1.
<SIT_DEF>-SITNDEFTEMPLATEID = 1.
<SIT_DEF>-SITNDEFISENABLED = 1.
<SIT_DEF>-SITNDEFNOTIFISREPEATED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SIT_DEF-SITNDEFNOTIFISAGGREGATED, sy-vline,
  WA_SIT_DEF-SITNDEFTRACKINGISENABLED, sy-vline,
  WA_SIT_DEF-SITNDEFANCHOROBJECT, sy-vline,
  WA_SIT_DEF-SITNDEFANCHOROBJECTVIEW, sy-vline,
  WA_SIT_DEF-SITNDEFRANK, sy-vline,
  WA_SIT_DEF-SITNISATTRIBNAVGNPARAMETERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SIT_DEF 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_SIT_DEF 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_SIT_DEF INTO WA_SIT_DEF.


*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_SIT_DEF_STR, 
CLIENT TYPE STRING,
SITNDEFINITIONID TYPE STRING,
SITNDEFTEMPLATEID TYPE STRING,
SITNDEFISENABLED TYPE STRING,
SITNDEFNOTIFISREPEATED TYPE STRING,
SITNDEFNOTIFISAGGREGATED TYPE STRING,
SITNDEFTRACKINGISENABLED TYPE STRING,
SITNDEFANCHOROBJECT TYPE STRING,
SITNDEFANCHOROBJECTVIEW TYPE STRING,
SITNDEFRANK TYPE STRING,
SITNISATTRIBNAVGNPARAMETERS TYPE STRING,
SITNDEFDATACONTEXTISENABLED TYPE STRING,
SITNDEFPAGEVARIANTISENABLED TYPE STRING,
SITNDEFLONGTEXTVERSION TYPE STRING,
SITNDEFAUTOMATIONISENABLED TYPE STRING,
CREA_DATE_TIME TYPE STRING,
CREA_UNAME TYPE STRING,
LCHG_DATE_TIME TYPE STRING,
LCHG_UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SIT_DEF_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_SIT_DEF_STR-CLIENT sy-vline 
WA_SIT_DEF_STR-SITNDEFINITIONID sy-vline 
WA_SIT_DEF_STR-SITNDEFTEMPLATEID sy-vline 
WA_SIT_DEF_STR-SITNDEFISENABLED sy-vline 
WA_SIT_DEF_STR-SITNDEFNOTIFISREPEATED sy-vline 
WA_SIT_DEF_STR-SITNDEFNOTIFISAGGREGATED sy-vline 
WA_SIT_DEF_STR-SITNDEFTRACKINGISENABLED sy-vline 
WA_SIT_DEF_STR-SITNDEFANCHOROBJECT sy-vline 
WA_SIT_DEF_STR-SITNDEFANCHOROBJECTVIEW sy-vline 
WA_SIT_DEF_STR-SITNDEFRANK sy-vline 
WA_SIT_DEF_STR-SITNISATTRIBNAVGNPARAMETERS sy-vline 
WA_SIT_DEF_STR-SITNDEFDATACONTEXTISENABLED sy-vline 
WA_SIT_DEF_STR-SITNDEFPAGEVARIANTISENABLED sy-vline 
WA_SIT_DEF_STR-SITNDEFLONGTEXTVERSION sy-vline 
WA_SIT_DEF_STR-SITNDEFAUTOMATIONISENABLED sy-vline 
WA_SIT_DEF_STR-CREA_DATE_TIME sy-vline 
WA_SIT_DEF_STR-CREA_UNAME sy-vline 
WA_SIT_DEF_STR-LCHG_DATE_TIME sy-vline 
WA_SIT_DEF_STR-LCHG_UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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