ABAP Select data from SAP table SSPIUINV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SSPIUINV
*  INTO TABLE @DATA(IT_SSPIUINV2).
*--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_SSPIUINV INDEX 1 INTO DATA(WA_SSPIUINV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SSPIUINV>-NAME = 1.
<SSPIUINV>-VALUE = 1.
<SSPIUINV>-TEXT = 1.
<SSPIUINV>-LINK = 1.
<SSPIUINV>-ICONNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SSPIUINV-ICONINFO, sy-vline,
  WA_SSPIUINV-ATTRREF, sy-vline,
  WA_SSPIUINV-ATTRINDEX, sy-vline,
  WA_SSPIUINV-ICONDETAIL, sy-vline,
  WA_SSPIUINV-ICONDETAILINFO, sy-vline,
  WA_SSPIUINV-ICONDISPLAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SSPIUINV 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_SSPIUINV 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_SSPIUINV INTO WA_SSPIUINV.


*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_SSPIUINV_STR, 
NAME TYPE STRING,
VALUE TYPE STRING,
TEXT TYPE STRING,
LINK TYPE STRING,
ICONNAME TYPE STRING,
ICONINFO TYPE STRING,
ATTRREF TYPE STRING,
ATTRINDEX TYPE STRING,
ICONDETAIL TYPE STRING,
ICONDETAILINFO TYPE STRING,
ICONDISPLAY TYPE STRING,
ICONDISPLAYINFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SSPIUINV_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_SSPIUINV_STR-NAME sy-vline 
WA_SSPIUINV_STR-VALUE sy-vline 
WA_SSPIUINV_STR-TEXT sy-vline 
WA_SSPIUINV_STR-LINK sy-vline 
WA_SSPIUINV_STR-ICONNAME sy-vline 
WA_SSPIUINV_STR-ICONINFO sy-vline 
WA_SSPIUINV_STR-ATTRREF sy-vline 
WA_SSPIUINV_STR-ATTRINDEX sy-vline 
WA_SSPIUINV_STR-ICONDETAIL sy-vline 
WA_SSPIUINV_STR-ICONDETAILINFO sy-vline 
WA_SSPIUINV_STR-ICONDISPLAY sy-vline 
WA_SSPIUINV_STR-ICONDISPLAYINFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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