ABAP Select data from SAP table RSSQLDBUF_STAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RSSQLDBUF_STAT
*  INTO TABLE @DATA(IT_RSSQLDBUF_STAT2).
*--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_RSSQLDBUF_STAT INDEX 1 INTO DATA(WA_RSSQLDBUF_STAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RSSQLDBUF_STAT>-WP_NO = 1.
<RSSQLDBUF_STAT>-HITS = 1.
<RSSQLDBUF_STAT>-REQUESTS = 1.
<RSSQLDBUF_STAT>-REPLACEMENTS = 1.
<RSSQLDBUF_STAT>-MAXSTMTS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RSSQLDBUF_STAT-TABGENERICBUF, sy-vline,
  WA_RSSQLDBUF_STAT-TABNOTBUF, sy-vline,
  WA_RSSQLDBUF_STAT-TABPARTIALBUF, sy-vline,
  WA_RSSQLDBUF_STAT-TABRESIDENTBUF, sy-vline,
  WA_RSSQLDBUF_STAT-UNUSEDSTMTS, sy-vline,
  WA_RSSQLDBUF_STAT-USEDSTMTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RSSQLDBUF_STAT 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_RSSQLDBUF_STAT 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_RSSQLDBUF_STAT INTO WA_RSSQLDBUF_STAT.


*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_RSSQLDBUF_STAT_STR, 
WP_NO TYPE STRING,
HITS TYPE STRING,
REQUESTS TYPE STRING,
REPLACEMENTS TYPE STRING,
MAXSTMTS TYPE STRING,
TABGENERICBUF TYPE STRING,
TABNOTBUF TYPE STRING,
TABPARTIALBUF TYPE STRING,
TABRESIDENTBUF TYPE STRING,
UNUSEDSTMTS TYPE STRING,
USEDSTMTS TYPE STRING,
USEBUFFER TYPE STRING,
USEPRIKEY TYPE STRING,
USESECKEY TYPE STRING,
USENOKEY TYPE STRING,
USEPOSTSELECTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RSSQLDBUF_STAT_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_RSSQLDBUF_STAT_STR-WP_NO sy-vline 
WA_RSSQLDBUF_STAT_STR-HITS sy-vline 
WA_RSSQLDBUF_STAT_STR-REQUESTS sy-vline 
WA_RSSQLDBUF_STAT_STR-REPLACEMENTS sy-vline 
WA_RSSQLDBUF_STAT_STR-MAXSTMTS sy-vline 
WA_RSSQLDBUF_STAT_STR-TABGENERICBUF sy-vline 
WA_RSSQLDBUF_STAT_STR-TABNOTBUF sy-vline 
WA_RSSQLDBUF_STAT_STR-TABPARTIALBUF sy-vline 
WA_RSSQLDBUF_STAT_STR-TABRESIDENTBUF sy-vline 
WA_RSSQLDBUF_STAT_STR-UNUSEDSTMTS sy-vline 
WA_RSSQLDBUF_STAT_STR-USEDSTMTS sy-vline 
WA_RSSQLDBUF_STAT_STR-USEBUFFER sy-vline 
WA_RSSQLDBUF_STAT_STR-USEPRIKEY sy-vline 
WA_RSSQLDBUF_STAT_STR-USESECKEY sy-vline 
WA_RSSQLDBUF_STAT_STR-USENOKEY sy-vline 
WA_RSSQLDBUF_STAT_STR-USEPOSTSELECTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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