ABAP Select data from SAP table SI_T001W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SI_T001W 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_T001W. 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_T001W 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_T001W TYPE STANDARD TABLE OF SI_T001W,
      WA_SI_T001W TYPE SI_T001W,
      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_T001W> TYPE SI_T001W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SI_T001W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SI_T001W
  INTO TABLE IT_SI_T001W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_T001W
*  INTO TABLE @DATA(IT_SI_T001W2).
*--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_T001W INDEX 1 INTO DATA(WA_SI_T001W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SI_T001W ASSIGNING <SI_T001W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_T001W>-NAME2 = 1.
<SI_T001W>-STRAS = 1.
<SI_T001W>-PFACH = 1.
<SI_T001W>-PSTLZ = 1.
<SI_T001W>-ORT01 = 1.

ENDLOOP.

LOOP AT IT_SI_T001W INTO WA_SI_T001W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_T001W-EKORG, sy-vline,
  WA_SI_T001W-VKORG, sy-vline,
  WA_SI_T001W-CHAZV, sy-vline,
  WA_SI_T001W-KKOWK, sy-vline,
  WA_SI_T001W-KORDB, sy-vline,
  WA_SI_T001W-BEDPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_T001W 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_T001W 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_T001W INTO WA_SI_T001W.


*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 ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_T001W-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_T001W-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SI_T001W-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_T001W-SPRAS.
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_T001W_STR, 
NAME2 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
CHAZV TYPE STRING,
KKOWK TYPE STRING,
KORDB TYPE STRING,
BEDPL TYPE STRING,
LAND1 TYPE STRING,
REGIO TYPE STRING,
COUNC TYPE STRING,
CITYC TYPE STRING,
ADRNR TYPE STRING,
IWERK TYPE STRING,
TXJCD TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
SPRAS TYPE STRING,
WKSOP TYPE STRING,
AWSLS TYPE STRING,
CHAZV_OLD TYPE STRING,
VLFKZ TYPE STRING,
BZIRK TYPE STRING,
ZONE1 TYPE STRING,
TAXIW TYPE STRING,
BZQHL TYPE STRING,
LET01 TYPE STRING,
LET02 TYPE STRING,
LET03 TYPE STRING,
TXNAM_MA1 TYPE STRING,
TXNAM_MA2 TYPE STRING,
TXNAM_MA3 TYPE STRING,
BETOL TYPE STRING,
J_1BBRANCH TYPE STRING,
VTBFI TYPE STRING,
FPRFW TYPE STRING,
ACHVM TYPE STRING,
DVSART TYPE STRING,
NODETYPE TYPE STRING,
NSCHEMA TYPE STRING,
PKOSA TYPE STRING,
MISCH TYPE STRING,
MGVUPD TYPE STRING,
VSTEL TYPE STRING,
MGVLAUPD TYPE STRING,
MGVLAREVAL TYPE STRING,
SOURCING TYPE STRING,
NO_DEFAULT_BATCH_MANAGEMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_T001W_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_T001W_STR-NAME2 sy-vline 
WA_SI_T001W_STR-STRAS sy-vline 
WA_SI_T001W_STR-PFACH sy-vline 
WA_SI_T001W_STR-PSTLZ sy-vline 
WA_SI_T001W_STR-ORT01 sy-vline 
WA_SI_T001W_STR-EKORG sy-vline 
WA_SI_T001W_STR-VKORG sy-vline 
WA_SI_T001W_STR-CHAZV sy-vline 
WA_SI_T001W_STR-KKOWK sy-vline 
WA_SI_T001W_STR-KORDB sy-vline 
WA_SI_T001W_STR-BEDPL sy-vline 
WA_SI_T001W_STR-LAND1 sy-vline 
WA_SI_T001W_STR-REGIO sy-vline 
WA_SI_T001W_STR-COUNC sy-vline 
WA_SI_T001W_STR-CITYC sy-vline 
WA_SI_T001W_STR-ADRNR sy-vline 
WA_SI_T001W_STR-IWERK sy-vline 
WA_SI_T001W_STR-TXJCD sy-vline 
WA_SI_T001W_STR-VTWEG sy-vline 
WA_SI_T001W_STR-SPART sy-vline 
WA_SI_T001W_STR-SPRAS sy-vline 
WA_SI_T001W_STR-WKSOP sy-vline 
WA_SI_T001W_STR-AWSLS sy-vline 
WA_SI_T001W_STR-CHAZV_OLD sy-vline 
WA_SI_T001W_STR-VLFKZ sy-vline 
WA_SI_T001W_STR-BZIRK sy-vline 
WA_SI_T001W_STR-ZONE1 sy-vline 
WA_SI_T001W_STR-TAXIW sy-vline 
WA_SI_T001W_STR-BZQHL sy-vline 
WA_SI_T001W_STR-LET01 sy-vline 
WA_SI_T001W_STR-LET02 sy-vline 
WA_SI_T001W_STR-LET03 sy-vline 
WA_SI_T001W_STR-TXNAM_MA1 sy-vline 
WA_SI_T001W_STR-TXNAM_MA2 sy-vline 
WA_SI_T001W_STR-TXNAM_MA3 sy-vline 
WA_SI_T001W_STR-BETOL sy-vline 
WA_SI_T001W_STR-J_1BBRANCH sy-vline 
WA_SI_T001W_STR-VTBFI sy-vline 
WA_SI_T001W_STR-FPRFW sy-vline 
WA_SI_T001W_STR-ACHVM sy-vline 
WA_SI_T001W_STR-DVSART sy-vline 
WA_SI_T001W_STR-NODETYPE sy-vline 
WA_SI_T001W_STR-NSCHEMA sy-vline 
WA_SI_T001W_STR-PKOSA sy-vline 
WA_SI_T001W_STR-MISCH sy-vline 
WA_SI_T001W_STR-MGVUPD sy-vline 
WA_SI_T001W_STR-VSTEL sy-vline 
WA_SI_T001W_STR-MGVLAUPD sy-vline 
WA_SI_T001W_STR-MGVLAREVAL sy-vline 
WA_SI_T001W_STR-SOURCING sy-vline 
WA_SI_T001W_STR-NO_DEFAULT_BATCH_MANAGEMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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