ABAP Select data from SAP table WCSIO9 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WCSIO9 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 WCSIO9. 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 WCSIO9 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_WCSIO9 TYPE STANDARD TABLE OF WCSIO9,
      WA_WCSIO9 TYPE WCSIO9,
      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: <WCSIO9> TYPE WCSIO9.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WCSIO9.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WCSIO9
  INTO TABLE IT_WCSIO9.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSIO9
*  INTO TABLE @DATA(IT_WCSIO92).
*--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_WCSIO9 INDEX 1 INTO DATA(WA_WCSIO92).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WCSIO9 ASSIGNING <WCSIO9>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSIO9>-OBJNR = 1.
<WCSIO9>-WAPINR = 1.
<WCSIO9>-WCNR = 1.
<WCSIO9>-USAGE = 1.
<WCSIO9>-STXT = 1.

ENDLOOP.

LOOP AT IT_WCSIO9 INTO WA_WCSIO9.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSIO9-TPLNR, sy-vline,
  WA_WCSIO9-EQUNR, sy-vline,
  WA_WCSIO9-DATEFR, sy-vline,
  WA_WCSIO9-TIMEFR, sy-vline,
  WA_WCSIO9-DATETO, sy-vline,
  WA_WCSIO9-TIMETO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSIO9 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_WCSIO9 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_WCSIO9 INTO WA_WCSIO9.


*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 WAPINR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCSIO9-WAPINR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSIO9-WAPINR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCSIO9-WCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSIO9-WCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_WCSIO9-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSIO9-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCSIO9-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSIO9-EQUNR.
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_WCSIO9_STR, 
OBJNR TYPE STRING,
WAPINR TYPE STRING,
WCNR TYPE STRING,
USAGE TYPE STRING,
STXT TYPE STRING,
TPLNR TYPE STRING,
EQUNR TYPE STRING,
DATEFR TYPE STRING,
TIMEFR TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
CREA TYPE STRING,
INAK TYPE STRING,
DLFL TYPE STRING,
CLSD TYPE STRING,
REJC TYPE STRING,
PREP TYPE STRING,
CHGN TYPE STRING,
PWP TYPE STRING,
WPHO TYPE STRING,
TENT TYPE STRING,
PROC TYPE STRING,
CONF TYPE STRING,
UNT TYPE STRING,
TEST TYPE STRING,
ITG TYPE STRING,
BTG TYPE STRING,
PTAG TYPE STRING,
ETG TYPE STRING,
BTUG TYPE STRING,
PTST TYPE STRING,
ETUG TYPE STRING,
BUG TYPE STRING,
EUG TYPE STRING,
MOBI TYPE STRING,
SYSST TYPE STRING,
USRST TYPE STRING,
APRVTL TYPE STRING,
APRVICON TYPE STRING,
VALIDICON TYPE STRING,
PHASEICON TYPE STRING,
USAGEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSIO9_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_WCSIO9_STR-OBJNR sy-vline 
WA_WCSIO9_STR-WAPINR sy-vline 
WA_WCSIO9_STR-WCNR sy-vline 
WA_WCSIO9_STR-USAGE sy-vline 
WA_WCSIO9_STR-STXT sy-vline 
WA_WCSIO9_STR-TPLNR sy-vline 
WA_WCSIO9_STR-EQUNR sy-vline 
WA_WCSIO9_STR-DATEFR sy-vline 
WA_WCSIO9_STR-TIMEFR sy-vline 
WA_WCSIO9_STR-DATETO sy-vline 
WA_WCSIO9_STR-TIMETO sy-vline 
WA_WCSIO9_STR-CREA sy-vline 
WA_WCSIO9_STR-INAK sy-vline 
WA_WCSIO9_STR-DLFL sy-vline 
WA_WCSIO9_STR-CLSD sy-vline 
WA_WCSIO9_STR-REJC sy-vline 
WA_WCSIO9_STR-PREP sy-vline 
WA_WCSIO9_STR-CHGN sy-vline 
WA_WCSIO9_STR-PWP sy-vline 
WA_WCSIO9_STR-WPHO sy-vline 
WA_WCSIO9_STR-TENT sy-vline 
WA_WCSIO9_STR-PROC sy-vline 
WA_WCSIO9_STR-CONF sy-vline 
WA_WCSIO9_STR-UNT sy-vline 
WA_WCSIO9_STR-TEST sy-vline 
WA_WCSIO9_STR-ITG sy-vline 
WA_WCSIO9_STR-BTG sy-vline 
WA_WCSIO9_STR-PTAG sy-vline 
WA_WCSIO9_STR-ETG sy-vline 
WA_WCSIO9_STR-BTUG sy-vline 
WA_WCSIO9_STR-PTST sy-vline 
WA_WCSIO9_STR-ETUG sy-vline 
WA_WCSIO9_STR-BUG sy-vline 
WA_WCSIO9_STR-EUG sy-vline 
WA_WCSIO9_STR-MOBI sy-vline 
WA_WCSIO9_STR-SYSST sy-vline 
WA_WCSIO9_STR-USRST sy-vline 
WA_WCSIO9_STR-APRVTL sy-vline 
WA_WCSIO9_STR-APRVICON sy-vline 
WA_WCSIO9_STR-VALIDICON sy-vline 
WA_WCSIO9_STR-PHASEICON sy-vline 
WA_WCSIO9_STR-USAGEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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