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SQL - Statistical Functions
SQL server Statistical functions work on SQL server tables and views and exploit all database parallelism, scalability, user privileges and security schemes. Hence the SQL statistical functions can be included and exposed within SQL queries −
| Sr.No. | Function & Description |
|---|---|
| 1 | @@CONNECTIONS()
Returns number of attempted connections. |
| 2 | @@CPU_BUSY()
Returns amount of time, SQL server spent on an active operation. |
| 3 | @@IDLE()
returns the total idle time of this SQL server. |
| 4 | @@IO_BUSY()
Returns the total spent time by this SQL server on performing the input and output operations. |
| 5 | @@PACK_RECEIVED()
Returns the number of input packets. |
| 6 | @@PACK_SENT()
Returns the number of output packets. |
| 7 | @@PACKET_ERRORS()
Returns the number of network packet errors. |
| 8 | @@TIMETICKS()
Returns the number of microseconds per tick. |
| 9 | @@TOTAL_ERRORS()
Returns the number of disk errors. |
| 10 | @@TOTAL_READ()
Returns the number of disk reads. |
| 11 | @@TOTOAL_WRITE()
Returns the number of disk writes. |
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