MySQL Bugs: #72221: Inline comment followed by semicolon produces parse error 1064

Bug #72221	Inline comment followed by semicolon produces parse error 1064
Submitted:	3 Apr 2014 14:18	Modified:	12 Dec 2014 12:12
Reporter:	Matthias Maier	Email Updates:
Status:	Verified	Impact on me:	None
Category:	Connector / NET	Severity:	S3 (Non-critical)
Version:	MySQL Connector/Net 6.6.5, MySQL 5.5.21	OS:	Microsoft Windows (7 SP1)
Assigned to:		CPU Architecture:	Any
Tags:	1064, inline comment, parse error, semicolon

Description:
The MySQL Connector/Net 6.6.5 in combination with MySQL Server 5.5.21 produces a parse error when used with an inline comment followed direclty by a semicolon like:

/* comment */; SELECT CONNECTION_ID()

How to repeat:
Open attached Visual Studio project or start the already compiled SemicolonBug.exe with a connection string and the above mentioned statement (or run.bat batch file with example parameters):

semicolonBug "server=HOSTNAME;database=DATABASE;User Id=USER;password=XXXXXXX;Connect Timeout=172800;Default Command Timeout=172800;pooling=False;Allow User Variables=True;Allow Zero Datetime=True" "/* comment */; select CONNECTION_ID()"
Query: /* comment */; select CONNECTION_ID()
Exception number: 1064 Exception text: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '; select CONNECTION_ID()' at line 1

In MySQL Workbench 6.x with MySQL 5.5.21 the problem does not occur.

Suggested fix:
It should be possible to send statements containing a comment directly followed by a semicolon without generating a parse error.

Also usuefull for version dependent comments like:
/*!42302 SET sort_buffer_size=10000*/;

SemicolonBug.zip

Attachment: SemicolonBug.zip (application/x-zip-compressed, text), 526.20 KiB.

Hello  Matthias Maier,

Thank you for the bug report and test case.
Verified this behavior on Visual Studio 2013 (C#.Net) with  MySQL Connector/Net 6.9.5.

Thanks,
Chiranjeevi.

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