def sql = Sql.newInstance("jdbc:mysql://localhost:3306/mydb",
  "user", "pswd", "com.mysql.jdbc.Driver")
def people = sql.dataSet("PERSON")
new File("users.csv").splitEachLine(",") {fields ->
  people.add(
    first_name: fields[0],
    last_name: fields[1],
    email: fields[2]
  )
}

@Grab('com.xlson.groovycsv:groovycsv:0.2')
import com.xlson.groovycsv.CsvParser

def csv = '''Name,Lastname
Mark,Andersson
Pete,Hansen'''

def data = new CsvParser().parse(csv)
for(line in data) {
    println "$line.Name $line.Lastname"
}