ABAP Select data from SAP table BWSD_LOGH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BWSD_LOGH
*  INTO TABLE @DATA(IT_BWSD_LOGH2).
*--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_BWSD_LOGH INDEX 1 INTO DATA(WA_BWSD_LOGH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BWSD_LOGH>-LOGGUID = 1.
<BWSD_LOGH>-LOGID = 1.
<BWSD_LOGH>-CONFIGGUID = 1.
<BWSD_LOGH>-CONFIGID = 1.
<BWSD_LOGH>-STARTTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BWSD_LOGH-TRUNTIME, sy-vline,
  WA_BWSD_LOGH-TRANSFERSTATE, sy-vline,
  WA_BWSD_LOGH-STATE, sy-vline,
  WA_BWSD_LOGH-AUTHOR, sy-vline,
  WA_BWSD_LOGH-MSIZE, sy-vline,
  WA_BWSD_LOGH-RECORDS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BWSD_LOGH 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_BWSD_LOGH 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_BWSD_LOGH INTO WA_BWSD_LOGH.


*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_BWSD_LOGH_STR, 
LOGGUID TYPE STRING,
LOGID TYPE STRING,
CONFIGGUID TYPE STRING,
CONFIGID TYPE STRING,
STARTTIME TYPE STRING,
TRUNTIME TYPE STRING,
TRANSFERSTATE TYPE STRING,
STATE TYPE STRING,
AUTHOR TYPE STRING,
MSIZE TYPE STRING,
RECORDS TYPE STRING,
BLOCKS TYPE STRING,
ELIN TYPE STRING,
SOBJ TYPE STRING,
DATAFORMAT TYPE STRING,
LOGMODE TYPE STRING,
LOGLEVEL TYPE STRING,
EXEMODE TYPE STRING,
BATCH TYPE STRING,
PARALLEL TYPE STRING,
TRKORR TYPE STRING,
INFOAREA TYPE STRING,
JOBNO TYPE STRING,
BLOCKSIZETP TYPE STRING,
NOREQ TYPE STRING,
TABUSMOD TYPE STRING,
IPROMD TYPE STRING,
TIMECHAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BWSD_LOGH_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_BWSD_LOGH_STR-LOGGUID sy-vline 
WA_BWSD_LOGH_STR-LOGID sy-vline 
WA_BWSD_LOGH_STR-CONFIGGUID sy-vline 
WA_BWSD_LOGH_STR-CONFIGID sy-vline 
WA_BWSD_LOGH_STR-STARTTIME sy-vline 
WA_BWSD_LOGH_STR-TRUNTIME sy-vline 
WA_BWSD_LOGH_STR-TRANSFERSTATE sy-vline 
WA_BWSD_LOGH_STR-STATE sy-vline 
WA_BWSD_LOGH_STR-AUTHOR sy-vline 
WA_BWSD_LOGH_STR-MSIZE sy-vline 
WA_BWSD_LOGH_STR-RECORDS sy-vline 
WA_BWSD_LOGH_STR-BLOCKS sy-vline 
WA_BWSD_LOGH_STR-ELIN sy-vline 
WA_BWSD_LOGH_STR-SOBJ sy-vline 
WA_BWSD_LOGH_STR-DATAFORMAT sy-vline 
WA_BWSD_LOGH_STR-LOGMODE sy-vline 
WA_BWSD_LOGH_STR-LOGLEVEL sy-vline 
WA_BWSD_LOGH_STR-EXEMODE sy-vline 
WA_BWSD_LOGH_STR-BATCH sy-vline 
WA_BWSD_LOGH_STR-PARALLEL sy-vline 
WA_BWSD_LOGH_STR-TRKORR sy-vline 
WA_BWSD_LOGH_STR-INFOAREA sy-vline 
WA_BWSD_LOGH_STR-JOBNO sy-vline 
WA_BWSD_LOGH_STR-BLOCKSIZETP sy-vline 
WA_BWSD_LOGH_STR-NOREQ sy-vline 
WA_BWSD_LOGH_STR-TABUSMOD sy-vline 
WA_BWSD_LOGH_STR-IPROMD sy-vline 
WA_BWSD_LOGH_STR-TIMECHAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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