Concatenating Strings in SQL Queries in Go

While text SQL queries offer a straightforward method for querying databases, it's crucial to understand the correct approach to concatenate string literals with values to avoid syntax errors and type mismatches.

The provided query syntax:

query := `SELECT column_name FROM table_name
        WHERE column1_name = %d AND column2_name = %d` % (val1, val2)

results in a syntax error due to the use of Python-style tuples. Instead, employ fmt.Sprintf to concatenate the string and values:

query := fmt.Sprintf(`SELECT column_name FROM table_name
                     WHERE column1_name = %d AND column2_name = %d`, val1, val2)

Alternatively, you can use db.Query to concatenate strings without string interpolation:

query := `SELECT column_name FROM table_name
        WHERE column1_name = %d AND column2_name = %d`

rows, err := db.Query(query, val1, val2)

Remember to address injection vulnerabilities by using prepared statements instead of string interpolation.