Prepared statement: A reference to a pre-interpreted query routine on the database, ready to accept parameters Parametrized query: A query made by your code in such a way that you are passing values in alongside some SQL that has placeholder values, usually ? or %s or something of that flavor. The confusion here seems to … Read more
A parameterized query (also known as a prepared statement) is a means of pre-compiling a SQL statement so that all you need to supply are the “parameters” (think “variables”) that need to be inserted into the statement for it to be executed. It’s commonly used as a means of preventing SQL injection attacks. You can … Read more
Parameterized queries do proper substitution of arguments prior to running the SQL query. It completely removes the possibility of “dirty” input changing the meaning of your query. That is, if the input contains SQL, it can’t become part of what is executed because the SQL is never injected into the resulting statement.
I think it’s safe… technically, but it’s a terrible habit to get into. Do you really want to be writing queries like this? var sqlCommand = new SqlCommand(“SELECT * FROM People WHERE IsAlive = ” + isAlive + ” AND FirstName = @firstName”); sqlCommand.Parameters.AddWithValue(“firstName”, “Rob”); It also leaves you vulnerable in the situation where a … Read more