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Example Statistics IO Output

Input statement

SQL Server parse and compile time:
CPU time = 108 ms, elapsed time = 108 ms.

(13431682 row(s) affected)
Table 'PostTypes'. Scan count 1, logical reads 2, physical reads 1, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Users'. Scan count 5, logical reads 42015, physical reads 1, read-ahead reads 41306, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Comments'. Scan count 5, logical reads 1089402, physical reads 248, read-ahead reads 1108174, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'PostTags'. Scan count 5, logical reads 77500, physical reads 348, read-ahead reads 82219, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Posts'. Scan count 5, logical reads 397944, physical reads 9338, read-ahead reads 402977, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Worktable'. Scan count 999172, logical reads 16247024, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Worktable'. Scan count 0, logical reads 0, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

SQL Server Execution Times:
CPU time = 156527 ms, elapsed time = 284906 ms.
SQL Server parse and compile time:
CPU time = 16 ms, elapsed time = 19 ms.

(233033 row(s) affected)
Table 'Worktable'. Scan count 0, logical reads 0, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Votes'. Scan count 1, logical reads 250128, physical reads 10, read-ahead reads 250104, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Posts'. Scan count 1, logical reads 165586, physical reads 18, read-ahead reads 49191, lob logical reads 823463, lob physical reads 42854, lob read-ahead reads 3272.
Table 'Users'. Scan count 1, logical reads 41405, physical reads 3, read-ahead reads 41401, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

SQL Server Execution Times:
CPU time = 17207 ms, elapsed time = 38163 ms.
Msg 207, Level 16, State 1, Line 1
Invalid column name 'scores'.
SQL Server parse and compile time:
CPU time = 0 ms, elapsed time = 0 ms.

SQL Server Execution Times:
CPU time = 0 ms, elapsed time = 0 ms.

Output Statement

CPU Elapsed
SQL Server parse and compile time: 00:00:00.108 00:00:00.108

13,431,682 rows affected

Row Num Table Scan Count Logical Reads Physical Reads Read-Ahead Reads LOB Logical Reads LOB Physical Reads LOB Read-Ahead Reads % Logical Reads of Total Reads
Total 999,193 17,853,887 9,936 1,634,676 0 0 0
PostTypes 1 2 1 0 0 0 0 0.000
Users 5 42,015 1 41,306 0 0 0 0.235
Comments 5 1,089,402 248 1,108,174 0 0 0 6.102
PostTags 5 77,500 348 82,219 0 0 0 0.434
Posts 5 397,944 9,338 402,977 0 0 0 2.229
Worktable 999,172 16,247,024 0 0 0 0 0 91.000
Worktable 0 0 0 0 0 0 0 0.000
CPU Elapsed
SQL Server Execution Times: 00:02:36.527 00:04:44.906
CPU Elapsed
SQL Server parse and compile time: 00:00:00.016 00:00:00.019

233,033 rows affected

Row Num Table Scan Count Logical Reads Physical Reads Read-Ahead Reads LOB Logical Reads LOB Physical Reads LOB Read-Ahead Reads % Logical Reads of Total Reads
Total 3 457,119 31 340,696 823,463 42,854 3,272
Worktable 0 0 0 0 0 0 0 0.000
Votes 1 250,128 10 250,104 0 0 0 54.718
Posts 1 165,586 18 49,191 823,463 42,854 3,272 36.224
Users 1 41,405 3 41,401 0 0 0 9.058
CPU Elapsed
SQL Server Execution Times: 00:00:17.207 00:00:38.163

Msg 207, Level 16, State 1, Line 1
Invalid column name 'scores'.

CPU Elapsed
SQL Server parse and compile time: 00:00:00.000 00:00:00.000
CPU Elapsed
SQL Server Execution Times: 00:00:00.000 00:00:00.000

Totals:

Table Scan Count Logical Reads Physical Reads Read-Ahead Reads LOB Logical Reads LOB Physical Reads LOB Read-Ahead Reads % Logical Reads of Total Reads
Total 999,196 18,311,006 9,967 1,975,372 823,463 42,854 3,272
Comments 5 1,089,402 248 1,108,174 0 0 0 5.949
Posts 6 563,530 9,356 452,168 823,463 42,854 3,272 3.078
PostTags 5 77,500 348 82,219 0 0 0 0.423
PostTypes 1 2 1 0 0 0 0 0.000
Users 6 83,420 4 82,707 0 0 0 0.456
Votes 1 250,128 10 250,104 0 0 0 1.366
Worktable 999,172 16,247,024 0 0 0 0 0 88.728
CPU Elapsed
SQL Server parse and compile time: 00:00:00.124 00:00:00.127
SQL Server Execution Times: 00:02:53.734 00:05:23.069
Total 00:02:53.858 00:05:23.196