ABAP Select data from SAP table T7SIF0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7SIF0 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 T7SIF0. 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 T7SIF0 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_T7SIF0 TYPE STANDARD TABLE OF T7SIF0,
      WA_T7SIF0 TYPE T7SIF0,
      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: <T7SIF0> TYPE T7SIF0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7SIF0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7SIF0
  INTO TABLE IT_T7SIF0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7SIF0
*  INTO TABLE @DATA(IT_T7SIF02).
*--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_T7SIF0 INDEX 1 INTO DATA(WA_T7SIF02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7SIF0 ASSIGNING <T7SIF0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7SIF0>-MANDT = 1.
<T7SIF0>-GRPR1 = 1.
<T7SIF0>-GRPR2 = 1.
<T7SIF0>-TRANS = 1.
<T7SIF0>-TYPTF = 1.

ENDLOOP.

LOOP AT IT_T7SIF0 INTO WA_T7SIF0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7SIF0-ENDDA, sy-vline,
  WA_T7SIF0-BEGDA, sy-vline,
  WA_T7SIF0-SWI01, sy-vline,
  WA_T7SIF0-SWI02, sy-vline,
  WA_T7SIF0-SWI03, sy-vline,
  WA_T7SIF0-SWI04, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7SIF0 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_T7SIF0 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_T7SIF0 INTO WA_T7SIF0.


*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_T7SIF0_STR, 
MANDT TYPE STRING,
GRPR1 TYPE STRING,
GRPR2 TYPE STRING,
TRANS TYPE STRING,
TYPTF TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SWI01 TYPE STRING,
SWI02 TYPE STRING,
SWI03 TYPE STRING,
SWI04 TYPE STRING,
SWIPS TYPE STRING,
LGART TYPE STRING,
LGARL TYPE STRING,
TYPAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7SIF0_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_T7SIF0_STR-MANDT sy-vline 
WA_T7SIF0_STR-GRPR1 sy-vline 
WA_T7SIF0_STR-GRPR2 sy-vline 
WA_T7SIF0_STR-TRANS sy-vline 
WA_T7SIF0_STR-TYPTF sy-vline 
WA_T7SIF0_STR-ENDDA sy-vline 
WA_T7SIF0_STR-BEGDA sy-vline 
WA_T7SIF0_STR-SWI01 sy-vline 
WA_T7SIF0_STR-SWI02 sy-vline 
WA_T7SIF0_STR-SWI03 sy-vline 
WA_T7SIF0_STR-SWI04 sy-vline 
WA_T7SIF0_STR-SWIPS sy-vline 
WA_T7SIF0_STR-LGART sy-vline 
WA_T7SIF0_STR-LGARL sy-vline 
WA_T7SIF0_STR-TYPAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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