ABAP Select data from SAP table OCWB_CHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OCWB_CHECK
*  INTO TABLE @DATA(IT_OCWB_CHECK2).
*--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_OCWB_CHECK INDEX 1 INTO DATA(WA_OCWB_CHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OCWB_CHECK>-MANDT = 1.
<OCWB_CHECK>-ZBUKR = 1.
<OCWB_CHECK>-HBKID = 1.
<OCWB_CHECK>-HKTID = 1.
<OCWB_CHECK>-RZAWE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OCWB_CHECK-CHECT, sy-vline,
  WA_OCWB_CHECK-LAUFD, sy-vline,
  WA_OCWB_CHECK-LAUFI, sy-vline,
  WA_OCWB_CHECK-ZALDT, sy-vline,
  WA_OCWB_CHECK-WAERS, sy-vline,
  WA_OCWB_CHECK-RWBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OCWB_CHECK 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_OCWB_CHECK 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_OCWB_CHECK INTO WA_OCWB_CHECK.


*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_OCWB_CHECK_STR, 
MANDT TYPE STRING,
ZBUKR TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
RZAWE TYPE STRING,
CHECT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
ZALDT TYPE STRING,
WAERS TYPE STRING,
RWBTR TYPE STRING,
XMANU TYPE STRING,
BANCD TYPE STRING,
ZNME1 TYPE STRING,
ZORT1 TYPE STRING,
ZLAND TYPE STRING,
VOIDR TYPE STRING,
VOIDD TYPE STRING,
VOIDU TYPE STRING,
CHECV TYPE STRING,
HBKIV TYPE STRING,
HKTIV TYPE STRING,
PERNR TYPE STRING,
SEQNR TYPE STRING,
BTZNR TYPE STRING,
BNKTY TYPE STRING,
CHECN TYPE STRING,
BETRG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OCWB_CHECK_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_OCWB_CHECK_STR-MANDT sy-vline 
WA_OCWB_CHECK_STR-ZBUKR sy-vline 
WA_OCWB_CHECK_STR-HBKID sy-vline 
WA_OCWB_CHECK_STR-HKTID sy-vline 
WA_OCWB_CHECK_STR-RZAWE sy-vline 
WA_OCWB_CHECK_STR-CHECT sy-vline 
WA_OCWB_CHECK_STR-LAUFD sy-vline 
WA_OCWB_CHECK_STR-LAUFI sy-vline 
WA_OCWB_CHECK_STR-ZALDT sy-vline 
WA_OCWB_CHECK_STR-WAERS sy-vline 
WA_OCWB_CHECK_STR-RWBTR sy-vline 
WA_OCWB_CHECK_STR-XMANU sy-vline 
WA_OCWB_CHECK_STR-BANCD sy-vline 
WA_OCWB_CHECK_STR-ZNME1 sy-vline 
WA_OCWB_CHECK_STR-ZORT1 sy-vline 
WA_OCWB_CHECK_STR-ZLAND sy-vline 
WA_OCWB_CHECK_STR-VOIDR sy-vline 
WA_OCWB_CHECK_STR-VOIDD sy-vline 
WA_OCWB_CHECK_STR-VOIDU sy-vline 
WA_OCWB_CHECK_STR-CHECV sy-vline 
WA_OCWB_CHECK_STR-HBKIV sy-vline 
WA_OCWB_CHECK_STR-HKTIV sy-vline 
WA_OCWB_CHECK_STR-PERNR sy-vline 
WA_OCWB_CHECK_STR-SEQNR sy-vline 
WA_OCWB_CHECK_STR-BTZNR sy-vline 
WA_OCWB_CHECK_STR-BNKTY sy-vline 
WA_OCWB_CHECK_STR-CHECN sy-vline 
WA_OCWB_CHECK_STR-BETRG sy-vline      INTO ld_text SEPARATED BY SPACE.

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