sql server - T-SQL 1=1 Performance Hit

Question

For my SQL queries, I usually do the following for SELECT statements:

SELECT ...
FROM table t
WHERE 1=1
  AND t.[column1] = @param1
  AND t.[column2] = @param2

This will make it easy if I need to add / remove / comment any WHERE clauses, since I don't have to care about the first line.

Is there any performance hit when using this pattern?

Additional Info:

Example for sheepsimulator and all other who didn't get the usage.

Suppose the above query, I need to change @param1 to be not included into the query:

With 1=1:

...
WHERE 1=1 <-- no change
  --AND t.[column1] = @param1 <-- changed
  AND t.[column2] = @param2 <-- no change
...

Without 1=1:

...
WHERE <-- no change
  --t.[column1] = @param1 <-- changed
  {AND removed} t.[column2] = @param2 <-- changed
...

Answer 1

No, SQL Server is smart enough to omit this condition from the execution plan since it's always TRUE.

Same is true for Oracle, MySQL and PostgreSQL.