What will be the right query for count(*) in C#?

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This my count code to display error if the data is already exists in database

C++

MySqlCommand cmd = new MySqlCommand("SELECT COUNT(*) FROM tbl_register WHERE ([Email_Id] = @Email_Id)", con);

AND the ERROR is showing like this:
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 '[Email_Id] = @Email_Id)' at line 1

What I have tried:

I have tried like clause.
this is done by adding parameters

Posted 23-Aug-17 20:46pm

S_Yash

Updated 23-Aug-17 23:26pm

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Graeme_Grant 24-Aug-17 2:53am

@Email_Id is expecting a parameter before execution. Are you passing one? Where is the rest of the calling code?

Simon_Whale 24-Aug-17 3:32am

have you tried to run the query directly in MySql?

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Bernhard Hiller · Answer 1 · 2017-08-23T21:27:00

You use MySQL, not Microsoft SQL Server. Consequently, those square brackets cannot be used for escaping field names. In MySQL, you use backticks ` instead. But anyway, you do not need to escape the field name here, it is not a reserved word nor does it contain spaces.

MySqlCommand cmd = new MySqlCommand("SELECT COUNT(*) FROM tbl_register WHERE (Email_Id = @Email_Id)", con);

Also, make sure you have an index on Email_Id.