ABAP Select data from SAP table WBCROSSGI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WBCROSSGI
*  INTO TABLE @DATA(IT_WBCROSSGI2).
*--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_WBCROSSGI INDEX 1 INTO DATA(WA_WBCROSSGI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WBCROSSGI>-OTYPE = 1.
<WBCROSSGI>-NAME = 1.
<WBCROSSGI>-OTYPE = 1.
<WBCROSSGI>-NAME = 1.
<WBCROSSGI>-INCLUDE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WBCROSSGI-DIRECT, sy-vline,
  WA_WBCROSSGI-INCLUDE, sy-vline,
  WA_WBCROSSGI-DIRECT, sy-vline,
  WA_WBCROSSGI-INDIRECT, sy-vline,
  WA_WBCROSSGI-INDIRECT, sy-vline,
  WA_WBCROSSGI-COMPONENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WBCROSSGI 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_WBCROSSGI 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_WBCROSSGI INTO WA_WBCROSSGI.


*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_WBCROSSGI_STR, 
OTYPE TYPE STRING,
NAME TYPE STRING,
OTYPE TYPE STRING,
NAME TYPE STRING,
INCLUDE TYPE STRING,
DIRECT TYPE STRING,
INCLUDE TYPE STRING,
DIRECT TYPE STRING,
INDIRECT TYPE STRING,
INDIRECT TYPE STRING,
COMPONENT TYPE STRING,
STATE TYPE STRING,
COMPONENT TYPE STRING,
ISHASH TYPE STRING,
LONGNAME TYPE STRING,
UDATE TYPE STRING,
UZEIT TYPE STRING,
UNAME TYPE STRING,
STATE TYPE STRING,
LONGNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WBCROSSGI_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_WBCROSSGI_STR-OTYPE sy-vline 
WA_WBCROSSGI_STR-NAME sy-vline 
WA_WBCROSSGI_STR-OTYPE sy-vline 
WA_WBCROSSGI_STR-NAME sy-vline 
WA_WBCROSSGI_STR-INCLUDE sy-vline 
WA_WBCROSSGI_STR-DIRECT sy-vline 
WA_WBCROSSGI_STR-INCLUDE sy-vline 
WA_WBCROSSGI_STR-DIRECT sy-vline 
WA_WBCROSSGI_STR-INDIRECT sy-vline 
WA_WBCROSSGI_STR-INDIRECT sy-vline 
WA_WBCROSSGI_STR-COMPONENT sy-vline 
WA_WBCROSSGI_STR-STATE sy-vline 
WA_WBCROSSGI_STR-COMPONENT sy-vline 
WA_WBCROSSGI_STR-ISHASH sy-vline 
WA_WBCROSSGI_STR-LONGNAME sy-vline 
WA_WBCROSSGI_STR-UDATE sy-vline 
WA_WBCROSSGI_STR-UZEIT sy-vline 
WA_WBCROSSGI_STR-UNAME sy-vline 
WA_WBCROSSGI_STR-STATE sy-vline 
WA_WBCROSSGI_STR-LONGNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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