Is it possible to use comments in QGIS Query Builder?

[المشرف العام]

I am trying different queries in the Query Builder. Is there a way to comment the query? I tried with

/* */

#

--

without success :

An error occurred when executing the query. The data provider said: OGR[3] error 1: SQL Expression Parsing Error: syntax error

​

EDIT : Thanks to the answer and comments of @Joseph,
I have made a feature request of this question: http://hub.qgis.org/issues/10914



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