ABAP Select data from SAP table MSSQRYSTATSFROMDB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSSQRYSTATSFROMDB
*  INTO TABLE @DATA(IT_MSSQRYSTATSFROMDB2).
*--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_MSSQRYSTATSFROMDB INDEX 1 INTO DATA(WA_MSSQRYSTATSFROMDB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSSQRYSTATSFROMDB>-SQLHANDLE = 1.
<MSSQRYSTATSFROMDB>-EXEC_COUNT = 1.
<MSSQRYSTATSFROMDB>-PCT_EXEC_COUNT = 1.
<MSSQRYSTATSFROMDB>-TTL_CPU_TIME = 1.
<MSSQRYSTATSFROMDB>-PCT_CPU_TIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSSQRYSTATSFROMDB-AVG_CPU_TIME, sy-vline,
  WA_MSSQRYSTATSFROMDB-LAST_CPU_TIME, sy-vline,
  WA_MSSQRYSTATSFROMDB-MIN_CPU_TIME, sy-vline,
  WA_MSSQRYSTATSFROMDB-MAX_CPU_TIME, sy-vline,
  WA_MSSQRYSTATSFROMDB-TTL_PHYS_READS, sy-vline,
  WA_MSSQRYSTATSFROMDB-PCT_PHYS_READS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSSQRYSTATSFROMDB 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_MSSQRYSTATSFROMDB 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_MSSQRYSTATSFROMDB INTO WA_MSSQRYSTATSFROMDB.


*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_MSSQRYSTATSFROMDB_STR, 
SQLHANDLE TYPE STRING,
EXEC_COUNT TYPE STRING,
PCT_EXEC_COUNT TYPE STRING,
TTL_CPU_TIME TYPE STRING,
PCT_CPU_TIME TYPE STRING,
AVG_CPU_TIME TYPE STRING,
LAST_CPU_TIME TYPE STRING,
MIN_CPU_TIME TYPE STRING,
MAX_CPU_TIME TYPE STRING,
TTL_PHYS_READS TYPE STRING,
PCT_PHYS_READS TYPE STRING,
AVG_PHYS_READS TYPE STRING,
LAST_PHYS_READS TYPE STRING,
MIN_PHYS_READS TYPE STRING,
MAX_PHYS_READS TYPE STRING,
TTL_LOG_WRITES TYPE STRING,
PCT_LOG_WRITES TYPE STRING,
AVG_LOG_WRITES TYPE STRING,
LAST_LOG_WRITES TYPE STRING,
MIN_LOG_WRITES TYPE STRING,
MAX_LOG_WRITES TYPE STRING,
TTL_LOGICAL_READS TYPE STRING,
PCT_LOGICAL_READS TYPE STRING,
AVG_LOGICAL_READS TYPE STRING,
LAST_LOGICAL_READS TYPE STRING,
MIN_LOGICAL_READS TYPE STRING,
MAX_LOGICAL_READS TYPE STRING,
TTL_ELAPSED_TIME TYPE STRING,
PCT_ELAPSED_TIME TYPE STRING,
AVG_ELAPSED_TIME TYPE STRING,
LAST_ELAPSED_TIME TYPE STRING,
MIN_ELAPSED_TIME TYPE STRING,
MAX_ELAPSED_TIME TYPE STRING,
TTL_CLR_TIME TYPE STRING,
PCT_CLR_TIME TYPE STRING,
AVG_CLR_TIME TYPE STRING,
LAST_CLR_TIME TYPE STRING,
MIN_CLR_TIME TYPE STRING,
MAX_CLR_TIME TYPE STRING,
WAIT_FACTOR TYPE STRING,
STMT_START_OFFSET TYPE STRING,
STMT_END_OFFSET TYPE STRING,
SQLTEXT TYPE STRING,
ABLOC TYPE STRING,
PLAN_GEN_NUM TYPE STRING,
PLAN_HANDLE TYPE STRING,
CREATION_TIME TYPE STRING,
LAST_EXEC_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSSQRYSTATSFROMDB_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_MSSQRYSTATSFROMDB_STR-SQLHANDLE sy-vline 
WA_MSSQRYSTATSFROMDB_STR-EXEC_COUNT sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_EXEC_COUNT sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_CPU_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_PHYS_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_LOG_WRITES sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_LOGICAL_READS sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_ELAPSED_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-TTL_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PCT_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-AVG_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MIN_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-MAX_CLR_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-WAIT_FACTOR sy-vline 
WA_MSSQRYSTATSFROMDB_STR-STMT_START_OFFSET sy-vline 
WA_MSSQRYSTATSFROMDB_STR-STMT_END_OFFSET sy-vline 
WA_MSSQRYSTATSFROMDB_STR-SQLTEXT sy-vline 
WA_MSSQRYSTATSFROMDB_STR-ABLOC sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PLAN_GEN_NUM sy-vline 
WA_MSSQRYSTATSFROMDB_STR-PLAN_HANDLE sy-vline 
WA_MSSQRYSTATSFROMDB_STR-CREATION_TIME sy-vline 
WA_MSSQRYSTATSFROMDB_STR-LAST_EXEC_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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