ABAP Select data from SAP table STPOS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM STPOS
*  INTO TABLE @DATA(IT_STPOS2).
*--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_STPOS INDEX 1 INTO DATA(WA_STPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<STPOS>-LTXPS = 1.
<STPOS>-LTXVB = 1.
<STPOS>-VBKZ = 1.
<STPOS>-MVBKZ = 1.
<STPOS>-DATUB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_STPOS-VWALT, sy-vline,
  WA_STPOS-AENRA, sy-vline,
  WA_STPOS-AENKZ, sy-vline,
  WA_STPOS-SELKZ, sy-vline,
  WA_STPOS-KZDMU, sy-vline,
  WA_STPOS-KZDOC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_STPOS 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_STPOS 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_STPOS INTO WA_STPOS.


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

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

*Conversion exit NUMCV, internal->external for field MASPN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_STPOS-MASPN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_STPOS-MASPN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field FAMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_STPOS-FAMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_STPOS-FAMAT.
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_STPOS_STR, 
LTXPS TYPE STRING,
LTXVB TYPE STRING,
VBKZ TYPE STRING,
MVBKZ TYPE STRING,
DATUB TYPE STRING,
VWALT TYPE STRING,
AENRA TYPE STRING,
AENKZ TYPE STRING,
SELKZ TYPE STRING,
KZDMU TYPE STRING,
KZDOC TYPE STRING,
KZVID TYPE STRING,
KZWPF TYPE STRING,
MASPN TYPE STRING,
MASKN TYPE STRING,
CLSPS TYPE STRING,
CLSVB TYPE STRING,
DUMPS1 TYPE STRING,
WEGXX1 TYPE STRING,
STUFE1 TYPE STRING,
KANTE TYPE STRING,
EFSRT TYPE STRING,
EFRNK TYPE STRING,
CAALT TYPE STRING,
FAMAT TYPE STRING,
DSORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_STPOS_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_STPOS_STR-LTXPS sy-vline 
WA_STPOS_STR-LTXVB sy-vline 
WA_STPOS_STR-VBKZ sy-vline 
WA_STPOS_STR-MVBKZ sy-vline 
WA_STPOS_STR-DATUB sy-vline 
WA_STPOS_STR-VWALT sy-vline 
WA_STPOS_STR-AENRA sy-vline 
WA_STPOS_STR-AENKZ sy-vline 
WA_STPOS_STR-SELKZ sy-vline 
WA_STPOS_STR-KZDMU sy-vline 
WA_STPOS_STR-KZDOC sy-vline 
WA_STPOS_STR-KZVID sy-vline 
WA_STPOS_STR-KZWPF sy-vline 
WA_STPOS_STR-MASPN sy-vline 
WA_STPOS_STR-MASKN sy-vline 
WA_STPOS_STR-CLSPS sy-vline 
WA_STPOS_STR-CLSVB sy-vline 
WA_STPOS_STR-DUMPS1 sy-vline 
WA_STPOS_STR-WEGXX1 sy-vline 
WA_STPOS_STR-STUFE1 sy-vline 
WA_STPOS_STR-KANTE sy-vline 
WA_STPOS_STR-EFSRT sy-vline 
WA_STPOS_STR-EFRNK sy-vline 
WA_STPOS_STR-CAALT sy-vline 
WA_STPOS_STR-FAMAT sy-vline 
WA_STPOS_STR-DSORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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