I want to INSERT a record in a database (which is Microsoft SQL Server in my case) using JDBC in Java. At the same time, I want to obtain the insert ID. How can I achieve this using JDBC API?
If it is an auto generated key, then you can use Statement#getGeneratedKeys() for this. You need to call it on the same Statement as the one being used for the INSERT. You first need to create the statement using Statement.RETURN_GENERATED_KEYS to notify the JDBC driver to return the keys.
Here's a basic example:
public void create(User user) throws SQLException {
try (
Connection connection = dataSource.getConnection();
PreparedStatement statement = connection.prepareStatement(SQL_INSERT,
Statement.RETURN_GENERATED_KEYS);
) {
statement.setString(1, user.getName());
statement.setString(2, user.getPassword());
statement.setString(3, user.getEmail());
// ...
int affectedRows = statement.executeUpdate();
if (affectedRows == 0) {
throw new SQLException("Creating user failed, no rows affected.");
}
try (ResultSet generatedKeys = statement.getGeneratedKeys()) {
if (generatedKeys.next()) {
user.setId(generatedKeys.getLong(1));
}
else {
throw new SQLException("Creating user failed, no ID obtained.");
}
}
}
}
Note that you're dependent on the JDBC driver as to whether it works. Currently, most of the last versions will work, but if I am correct, Oracle JDBC driver is still somewhat troublesome with this. MySQL and DB2 already supported it for ages. PostgreSQL started to support it not long ago. I can't comment about MSSQL as I've never used it.
For Oracle, you can invoke a CallableStatement with a RETURNING clause or a SELECT CURRVAL(sequencename) (or whatever DB-specific syntax to do so) directly after the INSERT in the same transaction to obtain the last generated key. See also this answer.
Create Generated Column
String generatedColumns[] = { "ID" };
Pass this geneated Column to your statement
PreparedStatement stmtInsert = conn.prepareStatement(insertSQL, generatedColumns);
Use ResultSet object to fetch the GeneratedKeys on Statement
ResultSet rs = stmtInsert.getGeneratedKeys();
if (rs.next()) {
long id = rs.getLong(1);
System.out.println("Inserted ID -" + id); // display inserted record
}
When encountering an 'Unsupported feature' error while using Statement.RETURN_GENERATED_KEYS, try this:
String[] returnId = { "BATCHID" };
String sql = "INSERT INTO BATCH (BATCHNAME) VALUES ('aaaaaaa')";
PreparedStatement statement = connection.prepareStatement(sql, returnId);
int affectedRows = statement.executeUpdate();
if (affectedRows == 0) {
throw new SQLException("Creating user failed, no rows affected.");
}
try (ResultSet rs = statement.getGeneratedKeys()) {
if (rs.next()) {
System.out.println(rs.getInt(1));
}
rs.close();
}
Where BATCHID is the auto generated id.
I'm hitting Microsoft SQL Server 2008 R2 from a single-threaded JDBC-based application and pulling back the last ID without using the RETURN_GENERATED_KEYS property or any PreparedStatement. Looks something like this:
private int insertQueryReturnInt(String SQLQy) {
ResultSet generatedKeys = null;
int generatedKey = -1;
try {
Statement statement = conn.createStatement();
statement.execute(SQLQy);
} catch (Exception e) {
errorDescription = "Failed to insert SQL query: " + SQLQy + "( " + e.toString() + ")";
return -1;
}
try {
generatedKey = Integer.parseInt(readOneValue("SELECT ##IDENTITY"));
} catch (Exception e) {
errorDescription = "Failed to get ID of just-inserted SQL query: " + SQLQy + "( " + e.toString() + ")";
return -1;
}
return generatedKey;
}
This blog post nicely isolates three main SQL Server "last ID" options:
http://msjawahar.wordpress.com/2008/01/25/how-to-find-the-last-identity-value-inserted-in-the-sql-server/ - haven't needed the other two yet.
Instead of a comment, I just want to answer post.
Interface java.sql.PreparedStatement
columnIndexes « You can use prepareStatement function that accepts columnIndexes and SQL statement.
Where columnIndexes allowed constant flags are Statement.RETURN_GENERATED_KEYS1 or Statement.NO_GENERATED_KEYS[2], SQL statement that may contain one or more '?' IN parameter placeholders.
SYNTAX «
Connection.prepareStatement(String sql, int autoGeneratedKeys)
Connection.prepareStatement(String sql, int[] columnIndexes)
Example:
PreparedStatement pstmt =
conn.prepareStatement( insertSQL, Statement.RETURN_GENERATED_KEYS );
columnNames « List out the columnNames like 'id', 'uniqueID', .... in the target table that contain the auto-generated keys that should be returned. The driver will ignore them if the SQL statement is not an INSERT statement.
SYNTAX «
Connection.prepareStatement(String sql, String[] columnNames)
Example:
String columnNames[] = new String[] { "id" };
PreparedStatement pstmt = conn.prepareStatement( insertSQL, columnNames );
Full Example:
public static void insertAutoIncrement_SQL(String UserName, String Language, String Message) {
String DB_URL = "jdbc:mysql://localhost:3306/test", DB_User = "root", DB_Password = "";
String insertSQL = "INSERT INTO `unicodeinfo`( `UserName`, `Language`, `Message`) VALUES (?,?,?)";
//"INSERT INTO `unicodeinfo`(`id`, `UserName`, `Language`, `Message`) VALUES (?,?,?,?)";
int primkey = 0 ;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection(DB_URL, DB_User, DB_Password);
String columnNames[] = new String[] { "id" };
PreparedStatement pstmt = conn.prepareStatement( insertSQL, columnNames );
pstmt.setString(1, UserName );
pstmt.setString(2, Language );
pstmt.setString(3, Message );
if (pstmt.executeUpdate() > 0) {
// Retrieves any auto-generated keys created as a result of executing this Statement object
java.sql.ResultSet generatedKeys = pstmt.getGeneratedKeys();
if ( generatedKeys.next() ) {
primkey = generatedKeys.getInt(1);
}
}
System.out.println("Record updated with id = "+primkey);
} catch (InstantiationException | IllegalAccessException | ClassNotFoundException | SQLException e) {
e.printStackTrace();
}
}
I'm using SQLServer 2008, but I have a development limitation: I cannot use a new driver for it, I have to use "com.microsoft.jdbc.sqlserver.SQLServerDriver" (I cannot use "com.microsoft.sqlserver.jdbc.SQLServerDriver").
That's why the solution conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS) threw a java.lang.AbstractMethodError for me.
In this situation, a possible solution I found is the old one suggested by Microsoft:
How To Retrieve ##IDENTITY Value Using JDBC
import java.sql.*;
import java.io.*;
public class IdentitySample
{
public static void main(String args[])
{
try
{
String URL = "jdbc:microsoft:sqlserver://yourServer:1433;databasename=pubs";
String userName = "yourUser";
String password = "yourPassword";
System.out.println( "Trying to connect to: " + URL);
//Register JDBC Driver
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
//Connect to SQL Server
Connection con = null;
con = DriverManager.getConnection(URL,userName,password);
System.out.println("Successfully connected to server");
//Create statement and Execute using either a stored procecure or batch statement
CallableStatement callstmt = null;
callstmt = con.prepareCall("INSERT INTO myIdentTable (col2) VALUES (?);SELECT ##IDENTITY");
callstmt.setString(1, "testInputBatch");
System.out.println("Batch statement successfully executed");
callstmt.execute();
int iUpdCount = callstmt.getUpdateCount();
boolean bMoreResults = true;
ResultSet rs = null;
int myIdentVal = -1; //to store the ##IDENTITY
//While there are still more results or update counts
//available, continue processing resultsets
while (bMoreResults || iUpdCount!=-1)
{
//NOTE: in order for output parameters to be available,
//all resultsets must be processed
rs = callstmt.getResultSet();
//if rs is not null, we know we can get the results from the SELECT ##IDENTITY
if (rs != null)
{
rs.next();
myIdentVal = rs.getInt(1);
}
//Do something with the results here (not shown)
//get the next resultset, if there is one
//this call also implicitly closes the previously obtained ResultSet
bMoreResults = callstmt.getMoreResults();
iUpdCount = callstmt.getUpdateCount();
}
System.out.println( "##IDENTITY is: " + myIdentVal);
//Close statement and connection
callstmt.close();
con.close();
}
catch (Exception ex)
{
ex.printStackTrace();
}
try
{
System.out.println("Press any key to quit...");
System.in.read();
}
catch (Exception e)
{
}
}
}
This solution worked for me!
I hope this helps!
You can use following java code to get new inserted id.
ps = con.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
ps.setInt(1, quizid);
ps.setInt(2, userid);
ps.executeUpdate();
ResultSet rs = ps.getGeneratedKeys();
if (rs.next()) {
lastInsertId = rs.getInt(1);
}
It is possible to use it with normal Statement's as well (not just PreparedStatement)
Statement statement = conn.createStatement();
int updateCount = statement.executeUpdate("insert into x...)", Statement.RETURN_GENERATED_KEYS);
try (ResultSet generatedKeys = statement.getGeneratedKeys()) {
if (generatedKeys.next()) {
return generatedKeys.getLong(1);
}
else {
throw new SQLException("Creating failed, no ID obtained.");
}
}
Most others have suggested to use JDBC API for this, but personally, I find it quite painful to do with most drivers. When in fact, you can just use a native T-SQL feature, the OUTPUT clause:
try (
Statement s = c.createStatement();
ResultSet rs = s.executeQuery(
"""
INSERT INTO t (a, b)
OUTPUT id
VALUES (1, 2)
"""
);
) {
while (rs.next())
System.out.println("ID = " + rs.getLong(1));
}
This is the simplest solution for SQL Server as well as a few other SQL dialects (e.g. Firebird, MariaDB, PostgreSQL, where you'd use RETURNING instead of OUTPUT).
I've blogged about this topic more in detail here.
With Hibernate's NativeQuery, you need to return a ResultList instead of a SingleResult, because Hibernate modifies a native query
INSERT INTO bla (a,b) VALUES (2,3) RETURNING id
like
INSERT INTO bla (a,b) VALUES (2,3) RETURNING id LIMIT 1
if you try to get a single result, which causes most databases (at least PostgreSQL) to throw a syntax error. Afterwards, you may fetch the resulting id from the list (which usually contains exactly one item).
In my case ->
ConnectionClass objConnectionClass=new ConnectionClass();
con=objConnectionClass.getDataBaseConnection();
pstmtGetAdd=con.prepareStatement(SQL_INSERT_ADDRESS_QUERY,Statement.RETURN_GENERATED_KEYS);
pstmtGetAdd.setString(1, objRegisterVO.getAddress());
pstmtGetAdd.setInt(2, Integer.parseInt(objRegisterVO.getCityId()));
int addId=pstmtGetAdd.executeUpdate();
if(addId>0)
{
ResultSet rsVal=pstmtGetAdd.getGeneratedKeys();
rsVal.next();
addId=rsVal.getInt(1);
}
If you are using Spring JDBC, you can use Spring's GeneratedKeyHolder class to get the inserted ID.
See this answer...
How to get inserted id using Spring Jdbctemplate.update(String sql, obj...args)
If you are using JDBC (tested with MySQL) and you just want the last inserted ID, there is an easy way to get it. The method I'm using is the following:
public static Integer insert(ConnectionImpl connection, String insertQuery){
Integer lastInsertId = -1;
try{
final PreparedStatement ps = connection.prepareStatement(insertQuery);
ps.executeUpdate(insertQuery);
final com.mysql.jdbc.PreparedStatement psFinal = (com.mysql.jdbc.PreparedStatement) ps;
lastInsertId = (int) psFinal.getLastInsertID();
connection.close();
} catch(SQLException ex){
System.err.println("Error: "+ex);
}
return lastInsertId;
}
Also, (and just in case) the method to get the ConnectionImpl is the following:
public static ConnectionImpl getConnectionImpl(){
ConnectionImpl conexion = null;
final String dbName = "database_name";
final String dbPort = "3306";
final String dbIPAddress = "127.0.0.1";
final String connectionPath = "jdbc:mysql://"+dbIPAddress+":"+dbPort+"/"+dbName+"?autoReconnect=true&useSSL=false";
final String dbUser = "database_user";
final String dbPassword = "database_password";
try{
conexion = (ConnectionImpl) DriverManager.getConnection(connectionPath, dbUser, dbPassword);
}catch(SQLException e){
System.err.println(e);
}
return conexion;
}
Remember to add the connector/J to the project referenced libraries.
In my case, the connector/J version is the 5.1.42. Maybe you will have to apply some changes to the connectionPath if you want to use a more modern version of the connector/J such as with the version 8.0.28.
In the file, remember to import the following resources:
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import com.mysql.jdbc.ConnectionImpl;
Hope this will be helpful.
Connection cn = DriverManager.getConnection("Host","user","pass");
Statement st = cn.createStatement("Ur Requet Sql");
int ret = st.execute();
I have package in SSIS that loads data using adomd.Net from essbase cube. With 2 columns package works fine, but when I add 3. column package fails.
Error message says:
Object reference not set to an instance of an object.
Third column in the first row contains null and some values in other rows.
Problem looks in null value in the 3. column.
I tried this if statement but I get empty column instead of values.
AdomdDataReader reader = null;
try
{
using (AdomdConnection conn = new AdomdConnection(connectionString))
{
conn.Open();
using (AdomdCommand cmd = new AdomdCommand(query, conn))
{
reader = cmd.ExecuteReader();
while (reader.Read())
{
Output0Buffer.AddRow();
Output0Buffer.Column = (reader.GetString(0));
Output0Buffer.Column1 = (reader.GetString(1));
if (!reader.IsDBNull(2))
{
Output0Buffer.Column2 = "test";
}
else
{
Output0Buffer.Column2 = (reader.GetString(2));
}
Console.WriteLine("fin");
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
throw;
}
This bit of the code is working the opposite way as intended:
if (!reader.IsDBNull(2))
{
Output0Buffer.Column2 = "test";
}
else
{
Output0Buffer.Column2 = (reader.GetString(2));
}
!reader.IsDBNull(2) means where the value is not null. Removing the exclamation point will fix the problem
my method in my class(MissionDAO) package dao;
public static void planf() throws SQLException {
Connection con = null;
PreparedStatement ps = null;
try {
con = Database.getConnexion();
ps = con.prepareStatement("UPDATE vehicule SET disponible='FALSE' WHERE matricule=455555");
// set the preparedstatement parameters
ps.setString(1,disponible);
ps.executeUpdate();
ps.executeQuery();
System.out.println("no change ");
} catch (Exception ex) {
ex.getStackTrace();
System.out.println("no update ");
} finally {
Database.close(con);
}
}
And i can insert in database without problemes
In your code you have a few issues:
In your PreparedStatement you have no placeholders '?' for parameter values. The statement ps.setString(1,disponible); will therefore do nothing.
disponible is undefined here so is probably a class member, but you do not show us how that value is set in code or retrieved in the planf method.
You have the statement ps.executeUpdate(); for the update, which is fine and all you need. The statement ps.executeQuery(); is wrong because ps is not returning a ResultSet.
My DataGridView displays a "0" column with a delta in the first row and a * in the second. I don't want these. They take up too much space. Is there a way to get them to go away?
I don't think the code is pertinent in this case, but to humor y'all, here it is:
private void PopulateLanguageAndPrimary() {
string query;
OracleDataAdapter da;
OracleDataTable dt;
OracleCommand oc;
try {
oracleConnectionMainForm.Open();
query = "select position, coach from players where team = :team";
da = new OracleDataAdapter();
oc = new OracleCommand(query, oracleConnectionMainForm);
oc.Parameters.Add("team", greenBayPackers);
da.SelectCommand = oc;
dt = new OracleDataTable();
da.Fill(dt);
dataGridViewLanguageAndPrimary.DataSource = dt;
} catch (OracleException ex) {
MessageBox.Show(ex.Message);
} finally {
oracleConnectionMainForm.Close();
}
}
added scream shot at: http://warbler.posterous.com/heres-the-unwanted-bling-on-the-datagridview#
Try setting dataGridViewLanguageAndPrimary.AllowUserToAddRow to false. This will remove the *. Then set RowHeadersVisible to false, hiding the superfluous column.
This is my first attempt in trying to query our LDAP server for AD info. When I am trying to query the LDAP server here is what I'm trying to retrieve:
I am trying to retrieve all active employees with a countlimit of 500 records whose displayname starts with "sav", has an email address and has a userAccountControl attribute of 512. The problem I'm encountering is that I'm only getting back 8 records total. I should literally be getting back at least 10 records.
I did a separate search on the 2 records that were NOT retrieved in my search and each had an email address and a userAccountControl value of 512. So I'm not sure why those 2 records were missing.
I'm sure I've done something wrong in my syntax but I cannot find what it is. Any HELP/DIRECTION would be appreciated. Thank you.
After googling I've defined the SEARCH FILTER as:
String searchFilter = "(&(objectClass=user)(displayname="+displayname+"*"+")(mail=*)(userAccountControl=512))";
Please see my complete method below:
public List<String> getAutocompleteEmpRecordsList(String displayname, LdapContext ctx) {
List<String> activeEmpAttributes = new ArrayList<String>();
Attributes attrs = null;
int count = 0;
int empEmailAddrLen = 0;
try {
SearchControls constraints = new SearchControls();
constraints.setCountLimit(500);
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
String[] attrIDs = {"displayname", "mail", "userAccountControl"};
constraints.setReturningAttributes(attrIDs);
String searchFilter = "(&(objectClass=user)(displayname="+displayname+"*"+")(mail=*)(userAccountControl=512))";
NamingEnumeration answer = ctx.search("OU=Standard,OU=Users,DC=xxx,DC=org", searchFilter, constraints);
if (answer != null) {
while (answer.hasMore()) {
attrs = ((SearchResult) answer.next()).getAttributes();
if (attrs.get("displayname") != null) {
int empNameLen = attrs.get("displayname").toString().length();
activeEmpAttributes.add(attrs.get("displayname").toString().substring(13, empNameLen));
}
count++;
ctx.close();
}
}
else {
throw new Exception("Invalid User");
}
System.out.println("activeEmpAttributes: " + activeEmpAttributes);
System.out.println("count: " + activeEmpAttributes.size());
} catch (Exception ex) {
ex.printStackTrace();
}
return activeEmpAttributes;
}
You may be confusing displayname attribute and cn attribute.
On Windows server you've got a command line tool called LDIDIFDE.EXE which can allow you to test your filter.
ldifde -f datas.ldf -d "OU=Standard,OU=THR Users,DC=txhealth,DC=org" -r "(&(objectClass=user)(displayname=sav*)(mail=*)(userAccountControl=512))"
ldifde -f datas.ldf -d "OU=Standard,OU=THR Users,DC=txhealth,DC=org" -r "(&(objectClass=user)(cn=sav*)(mail=*)(userAccountControl=512))"
In the User and computer MMC you can also test your filter.
Start User and computer Active-Directory :
Right buton on registered request :
Choose personalize search, you've got an helper tab for common attributes :
You can choose personalized tab for technical attributes
You can test en copy the resulting LDAP filter (you don't need the double (& one is enough):
Can you post your userAccountControl, displayName, and mail values for the two excluded users?
FWIW the medial search on displayName would run alot faster if you add a tuple index to it.
I downloaded a free AD tool to view all in AD that I needed and it showed me that the data was not the problem but I was just not hitting all the OU's that I needed because there is NOT just 1 OU where all our users are stored.
Consequently, after googling some more I found a page on the Oracle site regarding LDAP and I changed my LDAPContext to DirContext for my connection to do searches within the directory as well as using this context's REFERRAL and set the value to "follow" to avoid the PartialSearchException.
I thought I'd post my findings just in case some other newbie ran into the same issue.
If you see a downside to the changes I made please let me know. Regards.
Here is my corrected code:
public List<String> getAutocompleteEmpRecordsList(String displayname, DirContext ctx) {
List<String> activeEmpAttributes = new ArrayList<String>();
Attributes attrs = null;
int count = 0;
int empEmailAddrLen = 0;
try {
SearchControls constraints = new SearchControls();
constraints.setCountLimit(500);
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
String[] attrIDs = {"displayname", "mail", "userAccountControl"};
constraints.setReturningAttributes(attrIDs);
String searchFilter = "(&(objectClass=user)(displayname="+displayname.trim()+"*"+")(mail=*)(userAccountControl=512))";
NamingEnumeration answer = ctx.search("DC=xxx,DC=org", searchFilter, constraints);
if (answer != null) {
while (answer.hasMore()) {
attrs = ((SearchResult) answer.next()).getAttributes();
if (attrs.get("displayname") != null) {
int empNameLen = attrs.get("displayname").toString().length();
activeEmpAttributes.add(attrs.get("displayname").toString().substring(13, empNameLen));
}
count++;
ctx.close();
}
}
else {
throw new Exception("Invalid User");
}
System.out.println("activeEmpAttributes: " + activeEmpAttributes);
System.out.println("count: " + activeEmpAttributes.size());
} catch (Exception ex) {
ex.printStackTrace();
}
return activeEmpAttributes;
}
Thanks anyway.