ABAP Select data from SAP table BCST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BCST
*  INTO TABLE @DATA(IT_BCST2).
*--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_BCST INDEX 1 INTO DATA(WA_BCST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BCST>-MANDT = 1.
<BCST>-USERNAME = 1.
<BCST>-CONFA = 1.
<BCST>-CONFI = 1.
<BCST>-CONFS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BCST-DOBJD, sy-vline,
  WA_BCST-DMRKM, sy-vline,
  WA_BCST-DMWRT, sy-vline,
  WA_BCST-DPAGE, sy-vline,
  WA_BCST-DMSTU, sy-vline,
  WA_BCST-DSTRU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BCST 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_BCST 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_BCST INTO WA_BCST.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BCST-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BCST-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field A_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BCST-A_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BCST-A_LANGU.
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_BCST_STR, 
MANDT TYPE STRING,
USERNAME TYPE STRING,
CONFA TYPE STRING,
CONFI TYPE STRING,
CONFS TYPE STRING,
DOBJD TYPE STRING,
DMRKM TYPE STRING,
DMWRT TYPE STRING,
DPAGE TYPE STRING,
DMSTU TYPE STRING,
DSTRU TYPE STRING,
DPSEU TYPE STRING,
PRSAN TYPE STRING,
PRSPE TYPE STRING,
NEUTR TYPE STRING,
LCHAR TYPE STRING,
LVALU TYPE STRING,
LANGU TYPE STRING,
A_LANGU TYPE STRING,
MVANF TYPE STRING,
MVPER TYPE STRING,
NOMVF TYPE STRING,
MWVOR TYPE STRING,
MWVAT TYPE STRING,
MWVAV TYPE STRING,
TYPST TYPE STRING,
TYPSK TYPE STRING,
UMBEW TYPE STRING,
MEMUS TYPE STRING,
MEOPT TYPE STRING,
MEMIT TYPE STRING,
MEOHN TYPE STRING,
MEMAS TYPE STRING,
IMBEW TYPE STRING,
UBEZW TYPE STRING,
UKNOT TYPE STRING,
CBAUG TYPE STRING,
UCMPF TYPE STRING,
DVRST TYPE STRING,
DVSET TYPE STRING,
DVMAR TYPE STRING,
DVUEB TYPE STRING,
DVBST TYPE STRING,
DSCRS TYPE STRING,
DSCRL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BCST_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_BCST_STR-MANDT sy-vline 
WA_BCST_STR-USERNAME sy-vline 
WA_BCST_STR-CONFA sy-vline 
WA_BCST_STR-CONFI sy-vline 
WA_BCST_STR-CONFS sy-vline 
WA_BCST_STR-DOBJD sy-vline 
WA_BCST_STR-DMRKM sy-vline 
WA_BCST_STR-DMWRT sy-vline 
WA_BCST_STR-DPAGE sy-vline 
WA_BCST_STR-DMSTU sy-vline 
WA_BCST_STR-DSTRU sy-vline 
WA_BCST_STR-DPSEU sy-vline 
WA_BCST_STR-PRSAN sy-vline 
WA_BCST_STR-PRSPE sy-vline 
WA_BCST_STR-NEUTR sy-vline 
WA_BCST_STR-LCHAR sy-vline 
WA_BCST_STR-LVALU sy-vline 
WA_BCST_STR-LANGU sy-vline 
WA_BCST_STR-A_LANGU sy-vline 
WA_BCST_STR-MVANF sy-vline 
WA_BCST_STR-MVPER sy-vline 
WA_BCST_STR-NOMVF sy-vline 
WA_BCST_STR-MWVOR sy-vline 
WA_BCST_STR-MWVAT sy-vline 
WA_BCST_STR-MWVAV sy-vline 
WA_BCST_STR-TYPST sy-vline 
WA_BCST_STR-TYPSK sy-vline 
WA_BCST_STR-UMBEW sy-vline 
WA_BCST_STR-MEMUS sy-vline 
WA_BCST_STR-MEOPT sy-vline 
WA_BCST_STR-MEMIT sy-vline 
WA_BCST_STR-MEOHN sy-vline 
WA_BCST_STR-MEMAS sy-vline 
WA_BCST_STR-IMBEW sy-vline 
WA_BCST_STR-UBEZW sy-vline 
WA_BCST_STR-UKNOT sy-vline 
WA_BCST_STR-CBAUG sy-vline 
WA_BCST_STR-UCMPF sy-vline 
WA_BCST_STR-DVRST sy-vline 
WA_BCST_STR-DVSET sy-vline 
WA_BCST_STR-DVMAR sy-vline 
WA_BCST_STR-DVUEB sy-vline 
WA_BCST_STR-DVBST sy-vline 
WA_BCST_STR-DSCRS sy-vline 
WA_BCST_STR-DSCRL sy-vline      INTO ld_text SEPARATED BY SPACE.

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