ABAP Select data from SAP table BDLMSSDDLK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDLMSSDDLK
*  INTO TABLE @DATA(IT_BDLMSSDDLK2).
*--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_BDLMSSDDLK INDEX 1 INTO DATA(WA_BDLMSSDDLK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDLMSSDDLK>-OCCURTSTMP = 1.
<BDLMSSDDLK>-SPID = 1.
<BDLMSSDDLK>-SPNAME = 1.
<BDLMSSDDLK>-ABAPREPORT = 1.
<BDLMSSDDLK>-ABAPLOCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDLMSSDDLK-HOSTNAME, sy-vline,
  WA_BDLMSSDDLK-HOSTPID, sy-vline,
  WA_BDLMSSDDLK-WP_NUM, sy-vline,
  WA_BDLMSSDDLK-WP_TYPE, sy-vline,
  WA_BDLMSSDDLK-WINNER, sy-vline,
  WA_BDLMSSDDLK-SEQ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BDLMSSDDLK 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_BDLMSSDDLK 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_BDLMSSDDLK INTO WA_BDLMSSDDLK.


*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_BDLMSSDDLK_STR, 
OCCURTSTMP TYPE STRING,
SPID TYPE STRING,
SPNAME TYPE STRING,
ABAPREPORT TYPE STRING,
ABAPLOCAT TYPE STRING,
HOSTNAME TYPE STRING,
HOSTPID TYPE STRING,
WP_NUM TYPE STRING,
WP_TYPE TYPE STRING,
WINNER TYPE STRING,
SEQ TYPE STRING,
TNAME TYPE STRING,
MESSAGE TYPE STRING,
TCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDLMSSDDLK_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_BDLMSSDDLK_STR-OCCURTSTMP sy-vline 
WA_BDLMSSDDLK_STR-SPID sy-vline 
WA_BDLMSSDDLK_STR-SPNAME sy-vline 
WA_BDLMSSDDLK_STR-ABAPREPORT sy-vline 
WA_BDLMSSDDLK_STR-ABAPLOCAT sy-vline 
WA_BDLMSSDDLK_STR-HOSTNAME sy-vline 
WA_BDLMSSDDLK_STR-HOSTPID sy-vline 
WA_BDLMSSDDLK_STR-WP_NUM sy-vline 
WA_BDLMSSDDLK_STR-WP_TYPE sy-vline 
WA_BDLMSSDDLK_STR-WINNER sy-vline 
WA_BDLMSSDDLK_STR-SEQ sy-vline 
WA_BDLMSSDDLK_STR-TNAME sy-vline 
WA_BDLMSSDDLK_STR-MESSAGE sy-vline 
WA_BDLMSSDDLK_STR-TCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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