ABAP Select data from SAP table /BDL/BDLSADATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BDL/BDLSADATA 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 /BDL/BDLSADATA. 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 /BDL/BDLSADATA 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_/BDL/BDLSADATA TYPE STANDARD TABLE OF /BDL/BDLSADATA,
      WA_/BDL/BDLSADATA TYPE /BDL/BDLSADATA,
      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: </BDL/BDLSADATA> TYPE /BDL/BDLSADATA.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BDL/BDLSADATA
  INTO TABLE IT_/BDL/BDLSADATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BDL/BDLSADATA
*  INTO TABLE @DATA(IT_/BDL/BDLSADATA2).
*--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_/BDL/BDLSADATA INDEX 1 INTO DATA(WA_/BDL/BDLSADATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BDL/BDLSADATA ASSIGNING </BDL/BDLSADATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BDL/BDLSADATA>-VERSION = 1.
</BDL/BDLSADATA>-CLUST_ID = 1.
</BDL/BDLSADATA>-STRUCTNAME = 1.
</BDL/BDLSADATA>-FELDNAME = 1.
</BDL/BDLSADATA>-TYP = 1.

ENDLOOP.

LOOP AT IT_/BDL/BDLSADATA INTO WA_/BDL/BDLSADATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BDL/BDLSADATA-LAENGE, sy-vline,
  WA_/BDL/BDLSADATA-DECIMALS, sy-vline,
  WA_/BDL/BDLSADATA-DEPTH, sy-vline,
  WA_/BDL/BDLSADATA-SEQ, sy-vline,
  WA_/BDL/BDLSADATA-STATUS, sy-vline,
  WA_/BDL/BDLSADATA-CHGSTAMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BDL/BDLSADATA 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_/BDL/BDLSADATA 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_/BDL/BDLSADATA INTO WA_/BDL/BDLSADATA.


*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_/BDL/BDLSADATA_STR, 
VERSION TYPE STRING,
CLUST_ID TYPE STRING,
STRUCTNAME TYPE STRING,
FELDNAME TYPE STRING,
TYP TYPE STRING,
LAENGE TYPE STRING,
DECIMALS TYPE STRING,
DEPTH TYPE STRING,
SEQ TYPE STRING,
STATUS TYPE STRING,
CHGSTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BDL/BDLSADATA_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_/BDL/BDLSADATA_STR-VERSION sy-vline 
WA_/BDL/BDLSADATA_STR-CLUST_ID sy-vline 
WA_/BDL/BDLSADATA_STR-STRUCTNAME sy-vline 
WA_/BDL/BDLSADATA_STR-FELDNAME sy-vline 
WA_/BDL/BDLSADATA_STR-TYP sy-vline 
WA_/BDL/BDLSADATA_STR-LAENGE sy-vline 
WA_/BDL/BDLSADATA_STR-DECIMALS sy-vline 
WA_/BDL/BDLSADATA_STR-DEPTH sy-vline 
WA_/BDL/BDLSADATA_STR-SEQ sy-vline 
WA_/BDL/BDLSADATA_STR-STATUS sy-vline 
WA_/BDL/BDLSADATA_STR-CHGSTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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