ABAP Select data from SAP table BSB_RULEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSB_RULEW
*  INTO TABLE @DATA(IT_BSB_RULEW2).
*--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_BSB_RULEW INDEX 1 INTO DATA(WA_BSB_RULEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSB_RULEW>-RULE_ID = 1.
<BSB_RULEW>-TYPE = 1.
<BSB_RULEW>-START_DATE = 1.
<BSB_RULEW>-END_DATE = 1.
<BSB_RULEW>-CONFLICTS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSB_RULEW-FCALID, sy-vline,
  WA_BSB_RULEW-HCALID, sy-vline,
  WA_BSB_RULEW-INFO_DEL, sy-vline,
  WA_BSB_RULEW-RULE_INDEX, sy-vline,
  WA_BSB_RULEW-RULE_REF, sy-vline,
  WA_BSB_RULEW-WEEKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSB_RULEW 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_BSB_RULEW 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_BSB_RULEW INTO WA_BSB_RULEW.


*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_BSB_RULEW_STR, 
RULE_ID TYPE STRING,
TYPE TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
CONFLICTS TYPE STRING,
FCALID TYPE STRING,
HCALID TYPE STRING,
INFO_DEL TYPE STRING,
RULE_INDEX TYPE STRING,
RULE_REF TYPE STRING,
WEEKS TYPE STRING,
MONDAY TYPE STRING,
TUESDAY TYPE STRING,
WEDNESDAY TYPE STRING,
THURSDAY TYPE STRING,
FRIDAY TYPE STRING,
SATURDAY TYPE STRING,
SUNDAY TYPE STRING,
MONDA_FROM TYPE STRING,
TUESD_FROM TYPE STRING,
WEDNE_FROM TYPE STRING,
THURS_FROM TYPE STRING,
FRIDA_FROM TYPE STRING,
SATUR_FROM TYPE STRING,
SUNDA_FROM TYPE STRING,
MONDAY_TO TYPE STRING,
TUESDAY_TO TYPE STRING,
WEDNESD_TO TYPE STRING,
THURSDA_TO TYPE STRING,
FRIDAY_TO TYPE STRING,
SATURDA_TO TYPE STRING,
SUNDAY_TO TYPE STRING,
MOND_TZONE TYPE STRING,
TUES_TZONE TYPE STRING,
WEDN_TZONE TYPE STRING,
THUR_TZONE TYPE STRING,
FRID_TZONE TYPE STRING,
SATU_TZONE TYPE STRING,
SUND_TZONE TYPE STRING,
MONDY_OVER TYPE STRING,
TUESD_OVER TYPE STRING,
WEDNE_OVER TYPE STRING,
THURS_OVER TYPE STRING,
FRIDA_OVER TYPE STRING,
SATUR_OVER TYPE STRING,
SUNDA_OVER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSB_RULEW_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_BSB_RULEW_STR-RULE_ID sy-vline 
WA_BSB_RULEW_STR-TYPE sy-vline 
WA_BSB_RULEW_STR-START_DATE sy-vline 
WA_BSB_RULEW_STR-END_DATE sy-vline 
WA_BSB_RULEW_STR-CONFLICTS sy-vline 
WA_BSB_RULEW_STR-FCALID sy-vline 
WA_BSB_RULEW_STR-HCALID sy-vline 
WA_BSB_RULEW_STR-INFO_DEL sy-vline 
WA_BSB_RULEW_STR-RULE_INDEX sy-vline 
WA_BSB_RULEW_STR-RULE_REF sy-vline 
WA_BSB_RULEW_STR-WEEKS sy-vline 
WA_BSB_RULEW_STR-MONDAY sy-vline 
WA_BSB_RULEW_STR-TUESDAY sy-vline 
WA_BSB_RULEW_STR-WEDNESDAY sy-vline 
WA_BSB_RULEW_STR-THURSDAY sy-vline 
WA_BSB_RULEW_STR-FRIDAY sy-vline 
WA_BSB_RULEW_STR-SATURDAY sy-vline 
WA_BSB_RULEW_STR-SUNDAY sy-vline 
WA_BSB_RULEW_STR-MONDA_FROM sy-vline 
WA_BSB_RULEW_STR-TUESD_FROM sy-vline 
WA_BSB_RULEW_STR-WEDNE_FROM sy-vline 
WA_BSB_RULEW_STR-THURS_FROM sy-vline 
WA_BSB_RULEW_STR-FRIDA_FROM sy-vline 
WA_BSB_RULEW_STR-SATUR_FROM sy-vline 
WA_BSB_RULEW_STR-SUNDA_FROM sy-vline 
WA_BSB_RULEW_STR-MONDAY_TO sy-vline 
WA_BSB_RULEW_STR-TUESDAY_TO sy-vline 
WA_BSB_RULEW_STR-WEDNESD_TO sy-vline 
WA_BSB_RULEW_STR-THURSDA_TO sy-vline 
WA_BSB_RULEW_STR-FRIDAY_TO sy-vline 
WA_BSB_RULEW_STR-SATURDA_TO sy-vline 
WA_BSB_RULEW_STR-SUNDAY_TO sy-vline 
WA_BSB_RULEW_STR-MOND_TZONE sy-vline 
WA_BSB_RULEW_STR-TUES_TZONE sy-vline 
WA_BSB_RULEW_STR-WEDN_TZONE sy-vline 
WA_BSB_RULEW_STR-THUR_TZONE sy-vline 
WA_BSB_RULEW_STR-FRID_TZONE sy-vline 
WA_BSB_RULEW_STR-SATU_TZONE sy-vline 
WA_BSB_RULEW_STR-SUND_TZONE sy-vline 
WA_BSB_RULEW_STR-MONDY_OVER sy-vline 
WA_BSB_RULEW_STR-TUESD_OVER sy-vline 
WA_BSB_RULEW_STR-WEDNE_OVER sy-vline 
WA_BSB_RULEW_STR-THURS_OVER sy-vline 
WA_BSB_RULEW_STR-FRIDA_OVER sy-vline 
WA_BSB_RULEW_STR-SATUR_OVER sy-vline 
WA_BSB_RULEW_STR-SUNDA_OVER sy-vline      INTO ld_text SEPARATED BY SPACE.

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