Why Does My Prepared Statement Fail in PostgreSQL with a 'Query Parameter Placeholder Syntax Error'?

Query Parameter Placeholder Syntax Error in PostgreSQL

The provided SQL statement attempts to execute a query with a prepared statement. However, this statement encounters an error in PostgreSQL due to an improper parameter placeholder.

MySQL and PostgreSQL employ different syntax for specifying parameter placeholders. While MySQL utilizes the "?" character, PostgreSQL employs "$1", "$2", and so on.

To resolve this issue, replace the "?" placeholder in the SQL statement with "$1", as shown below:

db.Query(`SELECT COUNT(*) as N FROM email WHERE address = `, email)

This adjustment should eliminate the syntax error and allow the query to execute successfully in PostgreSQL.

Furthermore, the cryptic error messages encountered in PostgreSQL can arise from a variety of causes. In this particular case, the parser has become confused due to the incorrect parameter syntax, resulting in the cryptic error message.

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