ABAP Select data from SAP table BIW_CO_AREA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_CO_AREA
*  INTO TABLE @DATA(IT_BIW_CO_AREA2).
*--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_BIW_CO_AREA INDEX 1 INTO DATA(WA_BIW_CO_AREA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_CO_AREA>-KOKRS = 1.
<BIW_CO_AREA>-WAERS = 1.
<BIW_CO_AREA>-KTOPL = 1.
<BIW_CO_AREA>-LMONA = 1.
<BIW_CO_AREA>-KHINR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_CO_AREA-ERKRS, sy-vline,
  WA_BIW_CO_AREA-PHINR, sy-vline,
  WA_BIW_CO_AREA-BPHINR, sy-vline,
  WA_BIW_CO_AREA-PCACURTP, sy-vline,
  WA_BIW_CO_AREA-FIKRS, sy-vline,
  WA_BIW_CO_AREA-TCTHIENM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_CO_AREA 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_BIW_CO_AREA 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_BIW_CO_AREA INTO WA_BIW_CO_AREA.


*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_BIW_CO_AREA_STR, 
KOKRS TYPE STRING,
WAERS TYPE STRING,
KTOPL TYPE STRING,
LMONA TYPE STRING,
KHINR TYPE STRING,
ERKRS TYPE STRING,
PHINR TYPE STRING,
BPHINR TYPE STRING,
PCACURTP TYPE STRING,
FIKRS TYPE STRING,
TCTHIENM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_CO_AREA_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_BIW_CO_AREA_STR-KOKRS sy-vline 
WA_BIW_CO_AREA_STR-WAERS sy-vline 
WA_BIW_CO_AREA_STR-KTOPL sy-vline 
WA_BIW_CO_AREA_STR-LMONA sy-vline 
WA_BIW_CO_AREA_STR-KHINR sy-vline 
WA_BIW_CO_AREA_STR-ERKRS sy-vline 
WA_BIW_CO_AREA_STR-PHINR sy-vline 
WA_BIW_CO_AREA_STR-BPHINR sy-vline 
WA_BIW_CO_AREA_STR-PCACURTP sy-vline 
WA_BIW_CO_AREA_STR-FIKRS sy-vline 
WA_BIW_CO_AREA_STR-TCTHIENM sy-vline      INTO ld_text SEPARATED BY SPACE.

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