ABAP Select data from SAP table SI_T001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SI_T001 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 SI_T001. 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 SI_T001 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_SI_T001 TYPE STANDARD TABLE OF SI_T001,
      WA_SI_T001 TYPE SI_T001,
      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: <SI_T001> TYPE SI_T001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SI_T001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SI_T001
  INTO TABLE IT_SI_T001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_T001
*  INTO TABLE @DATA(IT_SI_T0012).
*--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_SI_T001 INDEX 1 INTO DATA(WA_SI_T0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SI_T001 ASSIGNING <SI_T001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_T001>-BUVAR = 1.
<SI_T001>-FDBUK = 1.
<SI_T001>-XFDIS = 1.
<SI_T001>-XVALV = 1.
<SI_T001>-XSKFN = 1.

ENDLOOP.

LOOP AT IT_SI_T001 INTO WA_SI_T001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_T001-KKBER, sy-vline,
  WA_SI_T001-XMWSN, sy-vline,
  WA_SI_T001-MREGL, sy-vline,
  WA_SI_T001-XGSBE, sy-vline,
  WA_SI_T001-XGJRV, sy-vline,
  WA_SI_T001-XKDFT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_T001 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_SI_T001 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_SI_T001 INTO WA_SI_T001.


*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.

*Conversion exit ALPHA, internal->external for field INFMT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_T001-INFMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_T001-INFMT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SI_T001_STR, 
BUVAR TYPE STRING,
FDBUK TYPE STRING,
XFDIS TYPE STRING,
XVALV TYPE STRING,
XSKFN TYPE STRING,
KKBER TYPE STRING,
XMWSN TYPE STRING,
MREGL TYPE STRING,
XGSBE TYPE STRING,
XGJRV TYPE STRING,
XKDFT TYPE STRING,
XPROD TYPE STRING,
XEINK TYPE STRING,
XJVAA TYPE STRING,
XVVWA TYPE STRING,
XSLTA TYPE STRING,
XFDMM TYPE STRING,
XFDSD TYPE STRING,
XEXTB TYPE STRING,
EBUKR TYPE STRING,
KTOP2 TYPE STRING,
UMKRS TYPE STRING,
BUKRS_GLOB TYPE STRING,
FSTVA TYPE STRING,
OPVAR TYPE STRING,
XCOVR TYPE STRING,
TXKRS TYPE STRING,
WFVAR TYPE STRING,
XBBBF TYPE STRING,
XBBBE TYPE STRING,
XBBBA TYPE STRING,
XBBKO TYPE STRING,
XSTDT TYPE STRING,
MWSKV TYPE STRING,
MWSKA TYPE STRING,
IMPDA TYPE STRING,
XNEGP TYPE STRING,
XKKBI TYPE STRING,
WT_NEWWT TYPE STRING,
PP_PDATE TYPE STRING,
INFMT TYPE STRING,
FSTVARE TYPE STRING,
KOPIM TYPE STRING,
DKWEG TYPE STRING,
OFFSACCT TYPE STRING,
BAPOVAR TYPE STRING,
XCOS TYPE STRING,
XCESSION TYPE STRING,
XSPLT TYPE STRING,
SURCCM TYPE STRING,
DTPROV TYPE STRING,
DTAMTC TYPE STRING,
DTTAXC TYPE STRING,
DTTDSP TYPE STRING,
DTAXR TYPE STRING,
XVATDATE TYPE STRING,
PST_PER_VAR TYPE STRING,
XBBSC TYPE STRING,
F_OBSOLETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_T001_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_SI_T001_STR-BUVAR sy-vline 
WA_SI_T001_STR-FDBUK sy-vline 
WA_SI_T001_STR-XFDIS sy-vline 
WA_SI_T001_STR-XVALV sy-vline 
WA_SI_T001_STR-XSKFN sy-vline 
WA_SI_T001_STR-KKBER sy-vline 
WA_SI_T001_STR-XMWSN sy-vline 
WA_SI_T001_STR-MREGL sy-vline 
WA_SI_T001_STR-XGSBE sy-vline 
WA_SI_T001_STR-XGJRV sy-vline 
WA_SI_T001_STR-XKDFT sy-vline 
WA_SI_T001_STR-XPROD sy-vline 
WA_SI_T001_STR-XEINK sy-vline 
WA_SI_T001_STR-XJVAA sy-vline 
WA_SI_T001_STR-XVVWA sy-vline 
WA_SI_T001_STR-XSLTA sy-vline 
WA_SI_T001_STR-XFDMM sy-vline 
WA_SI_T001_STR-XFDSD sy-vline 
WA_SI_T001_STR-XEXTB sy-vline 
WA_SI_T001_STR-EBUKR sy-vline 
WA_SI_T001_STR-KTOP2 sy-vline 
WA_SI_T001_STR-UMKRS sy-vline 
WA_SI_T001_STR-BUKRS_GLOB sy-vline 
WA_SI_T001_STR-FSTVA sy-vline 
WA_SI_T001_STR-OPVAR sy-vline 
WA_SI_T001_STR-XCOVR sy-vline 
WA_SI_T001_STR-TXKRS sy-vline 
WA_SI_T001_STR-WFVAR sy-vline 
WA_SI_T001_STR-XBBBF sy-vline 
WA_SI_T001_STR-XBBBE sy-vline 
WA_SI_T001_STR-XBBBA sy-vline 
WA_SI_T001_STR-XBBKO sy-vline 
WA_SI_T001_STR-XSTDT sy-vline 
WA_SI_T001_STR-MWSKV sy-vline 
WA_SI_T001_STR-MWSKA sy-vline 
WA_SI_T001_STR-IMPDA sy-vline 
WA_SI_T001_STR-XNEGP sy-vline 
WA_SI_T001_STR-XKKBI sy-vline 
WA_SI_T001_STR-WT_NEWWT sy-vline 
WA_SI_T001_STR-PP_PDATE sy-vline 
WA_SI_T001_STR-INFMT sy-vline 
WA_SI_T001_STR-FSTVARE sy-vline 
WA_SI_T001_STR-KOPIM sy-vline 
WA_SI_T001_STR-DKWEG sy-vline 
WA_SI_T001_STR-OFFSACCT sy-vline 
WA_SI_T001_STR-BAPOVAR sy-vline 
WA_SI_T001_STR-XCOS sy-vline 
WA_SI_T001_STR-XCESSION sy-vline 
WA_SI_T001_STR-XSPLT sy-vline 
WA_SI_T001_STR-SURCCM sy-vline 
WA_SI_T001_STR-DTPROV sy-vline 
WA_SI_T001_STR-DTAMTC sy-vline 
WA_SI_T001_STR-DTTAXC sy-vline 
WA_SI_T001_STR-DTTDSP sy-vline 
WA_SI_T001_STR-DTAXR sy-vline 
WA_SI_T001_STR-XVATDATE sy-vline 
WA_SI_T001_STR-PST_PER_VAR sy-vline 
WA_SI_T001_STR-XBBSC sy-vline 
WA_SI_T001_STR-F_OBSOLETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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