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As you must be aware that createArrayOf() method from the Connection Interface will give you a java.sql.SQLFeatureNotSupportedException exception. One of the "not so ideal" ways to achieve the IN Clause in MySQL is to dynamically create the number of parameters as ? in your IN Clause.
import java.sql.Array;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class JDBCInClauseExample {
public static void main(String[] args) throws ClassNotFoundException, SQLException {
//The elements for IN Clause
ArrayList<String> studentNames = new ArrayList<>();
studentNames.add("Harry");
studentNames.add("Ron");
//Create an array of same size
String[] arrayOfQuestionMarks = new String[studentNames.size()];
//Create a array of question marks ?
for(int i=0;i< studentNames.size();i++) {
arrayOfQuestionMarks[i] = "?";
}
//Create a string of question marks ?
String inClause = String.join(",", arrayOfQuestionMarks);
String url ="jdbc:mysql://localhost:3306/my_uat";
String userName="root";
String password ="root123";
String selectQuery ="Select * from students where student_name in ("+inClause+")";
Connection connection = DriverManager.getConnection(url,userName,password);
PreparedStatement preparedStatement = connection.prepareStatement(selectQuery);
for(int i=0;i< studentNames.size();i++) {
preparedStatement.setString(i+1, studentNames.get(i));
}
ResultSet resultSet = preparedStatement.executeQuery();
while(resultSet.next()) {
System.out.print(resultSet.getInt(1)+"\t");
System.out.print(resultSet.getString(2)+"\t");
System.out.print(resultSet.getString(3)+"\t");
System.out.print(resultSet.getString(4)+"\t");
System.out.println("");
}
}
}
Output
1 Harry 1997-01-03 00:00:00 London
2 Ron 1999-03-19 00:00:00 Paris
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