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How do I create a custom event log?

How do I create a custom event log?


  1. Open the Registry Editor (regedit.exe).
  2. In the left pane, browse to HKLM → SYSTEM → CurrentControlSet → Services → Eventlog.
  3. Right-click on Eventlog and select New → Key.
  4. Enter the name of the new event log and hit Enter.

How do you create an event source?

To create an event source, you need to have a name for your new source (called the Event Source Name) and the name of the log where the event source will be a part. If the event log entries would be written to the standard “Application”, “System” or “Security” logs, then you can use that as the name of the log.

How do I create a Windows event log?

To generate these logs, please follow the steps listed below:

  1. Open “Event Viewer” by clicking the “Start” button.
  2. Click “Control Panel” > “System and Security” > “Administrative Tools”, and then double-click “Event Viewer”
  3. Click to expand “Windows Logs” in the left pane, and then select “Application”.

How do I create an event in PowerShell?

PowerShell Engine Events

  1. Creating an event: New-Event cmdlet.
  2. Viewing the event queue: Get-Event cmdlet.
  3. Removing events from the queue: Remove-Event cmdlet.
  4. Subscribing to an event: Register-EngineEvent and Get-EventSubscriber cmdlet.
  5. Unsubscribing from an event: Unregister-Event cmdlet.

What is LogName in PowerShell?

The Get-EventLog cmdlet uses the LogName parameter to specify the Application event log. The Source parameter specifies the application name, Outlook. The objects are sent down the pipeline to the Where-Object cmdlet. For each object in the pipeline, the Where-Object cmdlet uses the variable $_.

How do I assign an alias?

As you can see, the Linux alias syntax is very easy:

  1. Start with the alias command.
  2. Then type the name of the alias you want to create.
  3. Then an = sign, with no spaces on either side of the =
  4. Then type the command (or commands) you want your alias to execute when it is run.

How do I create a permanent alias?

Steps to create a permanent Bash alias:

  1. Edit ~/. bash_aliases or ~/. bashrc file using: vi ~/. bash_aliases.
  2. Append your bash alias.
  3. For example append: alias update=’sudo yum update’
  4. Save and close the file.
  5. Activate alias by typing: source ~/. bash_aliases.

Which is used to create an alias name?

SQL SELECT AS is used to assign temporary names to table or column name or both. This is known as creating Alias in SQL.

How do I make an alias derived table?

The short answer is you need to give your subqueries an alias in your SELECT statement. Add an alias after the closing bracket of the FROM clause subquery. In other SQL vendors, this is not required, but MySQL requires you to alias your subqueries.

Can we use alias name in where clause?

Table aliases can be used in WHERE, GROUP BY, HAVING, and ORDER BY clauses. The aliases are mandatory for inline queries (queries embedded within another statement) as a data source to qualify the columns in a select list.

How do I set column alias?

The basic syntax of a table alias is as follows. SELECT column1, column2…. FROM table_name AS alias_name WHERE [condition]; The basic syntax of a column alias is as follows.

Can you use alias in where clause SQL Server?

Standard SQL doesn’t allow you to refer to a column alias in a WHERE clause. This restriction is imposed because when the WHERE code is executed, the column value may not yet be determined.

Can you order by an alias in SQL?

Due to logical query processing order, alias can be used in order by.

How do I find the SQL Server alias?

Expand SQL Native client configuration, and you can find a subfolder Alias. By default, we do not have any alias defined for the SQL Server instance. In the screenshot, we can see it does not see any items for the Alias. Right-click on Aliases and click on New Alias.

Can we use select statement in where clause?

A subquery in a WHERE clause can be used to qualify a column against a set of rows. For example, the following subquery returns the department numbers for departments on the third floor. The outer query retrieves the names of employees who work on the third floor.

Can subqueries be used in where condition?

You can place the Subquery in a number of SQL clauses: WHERE clause, HAVING clause, FROM clause. Subqueries can be used with SELECT, UPDATE, INSERT, DELETE statements along with expression operator. It could be equality operator or comparison operator such as =, >, =, <= and Like operator.

Can we write subquery in where clause?

A subquery is usually added within the WHERE Clause of another SQL SELECT statement. You can use the comparison operators, such as >, <, or =. The comparison operator can also be a multiple-row operator, such as IN, ANY, or ALL.

Which is better joins or subqueries?

The advantage of a join includes that it executes faster. The retrieval time of the query using joins almost always will be faster than that of a subquery. By using joins, you can maximize the calculation burden on the database i.e., instead of multiple queries using one join query.

What is single row subquery in SQL?

A single row subquery returns zero or one row to the outer SQL statement. You can place a subquery in a WHERE clause, a HAVING clause, or a FROM clause of a SELECT statement.