ABAP Select data from SAP table WSTI_POS_EVENT_PRG_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSTI_POS_EVENT_PRG_STY
*  INTO TABLE @DATA(IT_WSTI_POS_EVENT_PRG_STY2).
*--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_WSTI_POS_EVENT_PRG_STY INDEX 1 INTO DATA(WA_WSTI_POS_EVENT_PRG_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSTI_POS_EVENT_PRG_STY>-MANDT = 1.
<WSTI_POS_EVENT_PRG_STY>-WERKS = 1.
<WSTI_POS_EVENT_PRG_STY>-MATNR = 1.
<WSTI_POS_EVENT_PRG_STY>-LGORT = 1.
<WSTI_POS_EVENT_PRG_STY>-VORGDATUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSTI_POS_EVENT_PRG_STY-VORGZEIT, sy-vline,
  WA_WSTI_POS_EVENT_PRG_STY-MBLNR, sy-vline,
  WA_WSTI_POS_EVENT_PRG_STY-CNTNR, sy-vline,
  WA_WSTI_POS_EVENT_PRG_STY-MJAHR, sy-vline,
  WA_WSTI_POS_EVENT_PRG_STY-ZEILE, sy-vline,
  WA_WSTI_POS_EVENT_PRG_STY-CPUDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSTI_POS_EVENT_PRG_STY 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_WSTI_POS_EVENT_PRG_STY 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_WSTI_POS_EVENT_PRG_STY INTO WA_WSTI_POS_EVENT_PRG_STY.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-ERFME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field EMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-EMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-EMATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_POS_EVENT_PRG_STY-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_POS_EVENT_PRG_STY-GJAHR.
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_WSTI_POS_EVENT_PRG_STY_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
LGORT TYPE STRING,
VORGDATUM TYPE STRING,
VORGZEIT TYPE STRING,
MBLNR TYPE STRING,
CNTNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
STATPI TYPE STRING,
ORIGIN TYPE STRING,
STORNO TYPE STRING,
SIGN TYPE STRING,
SIGN_CALC TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
EXVKW TYPE STRING,
WAERS TYPE STRING,
BSTAR TYPE STRING,
SOBKZ TYPE STRING,
LIFNR TYPE STRING,
CHARG TYPE STRING,
WAART TYPE STRING,
EMATNR TYPE STRING,
DOCNUM TYPE STRING,
XBUIB_DONE TYPE STRING,
IBLNR TYPE STRING,
GJAHR TYPE STRING,
ZEILI TYPE STRING,
TIME_COMPARE TYPE STRING,
DEL_EXISTING_EVENT TYPE STRING,
CHANGED TYPE STRING,
USED_BY_SIM TYPE STRING,
EVENT_DELETED TYPE STRING,
EVENT_CHANGED TYPE STRING,
TRANSCURRENCY TYPE STRING,
SALESAMOUNT TYPE STRING,
WSTI_DATA_SOURCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSTI_POS_EVENT_PRG_STY_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_WSTI_POS_EVENT_PRG_STY_STR-MANDT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-WERKS sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-MATNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-LGORT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-VORGDATUM sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-VORGZEIT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-MBLNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-CNTNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-MJAHR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-ZEILE sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-CPUDT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-CPUTM sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-STATPI sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-ORIGIN sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-STORNO sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-SIGN sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-SIGN_CALC sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-ERFMG sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-ERFME sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-MENGE sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-MEINS sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-EXVKW sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-WAERS sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-BSTAR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-SOBKZ sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-LIFNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-CHARG sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-WAART sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-EMATNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-DOCNUM sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-XBUIB_DONE sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-IBLNR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-GJAHR sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-ZEILI sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-TIME_COMPARE sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-DEL_EXISTING_EVENT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-CHANGED sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-USED_BY_SIM sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-EVENT_DELETED sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-EVENT_CHANGED sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-TRANSCURRENCY sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-SALESAMOUNT sy-vline 
WA_WSTI_POS_EVENT_PRG_STY_STR-WSTI_DATA_SOURCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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