ABAP Select data from SAP table VSPAB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VSPAB1 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 VSPAB1. 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 VSPAB1 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_VSPAB1 TYPE STANDARD TABLE OF VSPAB1,
      WA_VSPAB1 TYPE VSPAB1,
      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: <VSPAB1> TYPE VSPAB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VSPAB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VSPAB1
  INTO TABLE IT_VSPAB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VSPAB1
*  INTO TABLE @DATA(IT_VSPAB12).
*--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_VSPAB1 INDEX 1 INTO DATA(WA_VSPAB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VSPAB1 ASSIGNING <VSPAB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VSPAB1>-MANDT = 1.
<VSPAB1>-PARTNR = 1.
<VSPAB1>-ADRTYP = 1.
<VSPAB1>-GBDAT = 1.
<VSPAB1>-GEDAT = 1.

ENDLOOP.

LOOP AT IT_VSPAB1 INTO WA_VSPAB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VSPAB1-ADRNR, sy-vline,
  WA_VSPAB1-NAME3, sy-vline,
  WA_VSPAB1-NAME4, sy-vline,
  WA_VSPAB1-ADRZUS, sy-vline,
  WA_VSPAB1-PSTL2, sy-vline,
  WA_VSPAB1-PFACH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VSPAB1 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_VSPAB1 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_VSPAB1 INTO WA_VSPAB1.


*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_VSPAB1_STR, 
MANDT TYPE STRING,
PARTNR TYPE STRING,
ADRTYP TYPE STRING,
GBDAT TYPE STRING,
GEDAT TYPE STRING,
ADRNR TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
ADRZUS TYPE STRING,
PSTL2 TYPE STRING,
PFACH TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VSPAB1_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_VSPAB1_STR-MANDT sy-vline 
WA_VSPAB1_STR-PARTNR sy-vline 
WA_VSPAB1_STR-ADRTYP sy-vline 
WA_VSPAB1_STR-GBDAT sy-vline 
WA_VSPAB1_STR-GEDAT sy-vline 
WA_VSPAB1_STR-ADRNR sy-vline 
WA_VSPAB1_STR-NAME3 sy-vline 
WA_VSPAB1_STR-NAME4 sy-vline 
WA_VSPAB1_STR-ADRZUS sy-vline 
WA_VSPAB1_STR-PSTL2 sy-vline 
WA_VSPAB1_STR-PFACH sy-vline 
WA_VSPAB1_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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