**How to Avoid Compilation Errors When Discarding Unused Result Objects in Go SQL Statements?**

Eliminating the Unused Variable in Go SQL Statement Execution

When executing a SQL statement with the Exec() method in Go, it returns multiple values including a result object, Result, and an error value. To avoid compilation errors due to an unused variable, this Result object must be declared and assigned to a variable.

However, if the Result object is not needed, it can be discarded using the blank identifier (_). The blank identifier is a special keyword in Go that allows the evaluation of a value without assigning it to a variable. It is particularly useful in cases where only the side effects of a statement are of interest.

Solution

Replace the unused sqlRes variable with the blank identifier, as shown below:

<code class="go">stmt, err := db.Prepare("INSERT person SET name=?")
_, err = stmt.Exec(person.Name)</code>

By using the blank identifier, the Result object is evaluated, but its value is discarded. This allows the code to execute the SQL statement without generating any compilation errors.

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