Java ParameterMetaData .getScale (int param)

Syntax

ParameterMetaData.getScale(int param) has the following syntax.

int getScale(int param)  throws SQLException

Example

In the following code shows how to use ParameterMetaData.getScale(int param) method.


import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.Statement;
/*from  w ww .  jav a  2 s . co m*/
public class Main {
  public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,name varchar(30));");

    String sql = "INSERT INTO survey (id) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);
    ParameterMetaData pmd = pstmt.getParameterMetaData();

    int totalDigits = pmd.getPrecision(1);
    int digitsAfterDecimal = pmd.getScale(1);
    boolean b = pmd.isSigned(1);
    System.out.println("The first parameter ");
    System.out.println("    has precision " + totalDigits);
    System.out.println("    has scale " + digitsAfterDecimal);
    System.out.println("    may be a signed number " + b);

    int count = pmd.getParameterCount();
    System.out.println("count is " + count);

    for (int i = 1; i <= count; i++) {
        int type = pmd.getParameterType(i);
        String typeName = pmd.getParameterTypeName(i);
        System.out.println("Parameter " + i + ":"); 
        System.out.println("    type is " + type); 
        System.out.println("    type name is " + typeName); 
    }



    st.close();
    conn.close();
  }
  private static Connection getConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:mem:data/tutorial";

    return DriverManager.getConnection(url, "sa", "");
  }
}

The code above generates the following result.





















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DatabaseMetaData
ParameterMetaData
PreparedStatement
ResultSet
Timestamp