ABAP Select data from SAP table /SDF/MSSTBSHIST620 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SDF/MSSTBSHIST620 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 /SDF/MSSTBSHIST620. 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 /SDF/MSSTBSHIST620 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_/SDF/MSSTBSHIST620 TYPE STANDARD TABLE OF /SDF/MSSTBSHIST620,
      WA_/SDF/MSSTBSHIST620 TYPE /SDF/MSSTBSHIST620,
      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: </SDF/MSSTBSHIST620> TYPE /SDF/MSSTBSHIST620.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SDF/MSSTBSHIST620.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SDF/MSSTBSHIST620
  INTO TABLE IT_/SDF/MSSTBSHIST620.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/MSSTBSHIST620
*  INTO TABLE @DATA(IT_/SDF/MSSTBSHIST6202).
*--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_/SDF/MSSTBSHIST620 INDEX 1 INTO DATA(WA_/SDF/MSSTBSHIST6202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/MSSTBSHIST620 ASSIGNING </SDF/MSSTBSHIST620>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/MSSTBSHIST620>-TABLENAME = 1.
</SDF/MSSTBSHIST620>-DATE = 1.
</SDF/MSSTBSHIST620>-TOTALROWS = 1.
</SDF/MSSTBSHIST620>-DATASIZE = 1.
</SDF/MSSTBSHIST620>-RESERVED = 1.

ENDLOOP.

LOOP AT IT_/SDF/MSSTBSHIST620 INTO WA_/SDF/MSSTBSHIST620.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/MSSTBSHIST620-INDEXSIZE, sy-vline,
  WA_/SDF/MSSTBSHIST620-INDEXDEPTH, sy-vline,
  WA_/SDF/MSSTBSHIST620-NUMINDEXES, sy-vline,
  WA_/SDF/MSSTBSHIST620-BUFFSTATUS, sy-vline,
  WA_/SDF/MSSTBSHIST620-SCANDENSITY, sy-vline,
  WA_/SDF/MSSTBSHIST620-LOGICALFRAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/MSSTBSHIST620 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_/SDF/MSSTBSHIST620 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_/SDF/MSSTBSHIST620 INTO WA_/SDF/MSSTBSHIST620.


*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_/SDF/MSSTBSHIST620_STR, 
TABLENAME TYPE STRING,
DATE TYPE STRING,
TOTALROWS TYPE STRING,
DATASIZE TYPE STRING,
RESERVED TYPE STRING,
INDEXSIZE TYPE STRING,
INDEXDEPTH TYPE STRING,
NUMINDEXES TYPE STRING,
BUFFSTATUS TYPE STRING,
SCANDENSITY TYPE STRING,
LOGICALFRAG TYPE STRING,
NUMPAGES TYPE STRING,
BESTCOUNT TYPE STRING,
ACTUALCOUNT TYPE STRING,
EXTENTSWITCHES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/MSSTBSHIST620_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_/SDF/MSSTBSHIST620_STR-TABLENAME sy-vline 
WA_/SDF/MSSTBSHIST620_STR-DATE sy-vline 
WA_/SDF/MSSTBSHIST620_STR-TOTALROWS sy-vline 
WA_/SDF/MSSTBSHIST620_STR-DATASIZE sy-vline 
WA_/SDF/MSSTBSHIST620_STR-RESERVED sy-vline 
WA_/SDF/MSSTBSHIST620_STR-INDEXSIZE sy-vline 
WA_/SDF/MSSTBSHIST620_STR-INDEXDEPTH sy-vline 
WA_/SDF/MSSTBSHIST620_STR-NUMINDEXES sy-vline 
WA_/SDF/MSSTBSHIST620_STR-BUFFSTATUS sy-vline 
WA_/SDF/MSSTBSHIST620_STR-SCANDENSITY sy-vline 
WA_/SDF/MSSTBSHIST620_STR-LOGICALFRAG sy-vline 
WA_/SDF/MSSTBSHIST620_STR-NUMPAGES sy-vline 
WA_/SDF/MSSTBSHIST620_STR-BESTCOUNT sy-vline 
WA_/SDF/MSSTBSHIST620_STR-ACTUALCOUNT sy-vline 
WA_/SDF/MSSTBSHIST620_STR-EXTENTSWITCHES sy-vline      INTO ld_text SEPARATED BY SPACE.

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