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Any difference between :param and @param? #825

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h1112918 opened this Issue Oct 16, 2015 · 1 comment

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h1112918 commented Oct 16, 2015

There are two ways to add parameters:

command.CommandText = "SELECT * FROM mytable WHERE Id = :Id";
command.Parameters.AddWithValue("Id", id);

and

command.CommandText = "SELECT * FROM mytable WHERE Id = @Id";
command.Parameters.AddWithValue("@Id", id);

Is there any difference in both methods in performance or something else? I also think the difference (if any) should be mentioned in the project Wiki.

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roji Oct 16, 2015

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There are no differences whatsoever between the two, Npgsql parses the command text and replaces them with PostgreSQL's native parameter placeholders, which are positional and not named ($1, $2).

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roji commented Oct 16, 2015

There are no differences whatsoever between the two, Npgsql parses the command text and replaces them with PostgreSQL's native parameter placeholders, which are positional and not named ($1, $2).

@roji roji closed this Oct 16, 2015

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