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# Database Abstraction Layer

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v5:performance:clearsql

# clearSql

##### Syntax

    void clearSql()

## Description

The method `clearSql()` empties entries from the SQL logging table earlier than the current timestamp. This allows the log to be cleared while the logging system is still in use.

## Known Issues

Because the method uses a 'delete from' methodology, and that the logging system may accumulated substantial volumes of data

- The command may time out if run in a browser
- The command may place the system under a heavy load, and there may be transactional timeout issues on some DBMS

An alternative methodology is:

1. Stop the logging system
2. Use a 'truncate table' command
3. restart the logging system

v5/performance/clearsql.txt · Last modified: 2016/01/12 17:14 by mnewnham

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