How do i insert data into auth_user table of django rest framework from servlets. I have connected the servlet to the database. I tried inserting the username and password by
query = new String("insert into Auth_User(password, username) values('"+pswd+"','"+loginid+"')");
st.executeUpdate(query);
But i am getting an error- java.sql.SQLException: ORA-00947: not enough values. I figured there are other fields in the auth_user table which needs to be filled. So how do i insert the date_joined value and others in the table using java commands.
A comma was missing, query works fine now.
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I am using a single Spring JDBC update to make an update to two tables in my Postgres database. My SQL query is as follows:
UPDATE accounts SET last_transaction_amount = :transaction_amount WHERE acct_num = :acct_num; INSERT INTO transactions (transaction_amout) VALUES (:transaction_amount);
Using NamedParameterJdbcTemplate#update, I have no issue executing this query and achieving the expected results.
The transactions table generates a sequential transaction identifier, and I want to return this to my application.
I've tried passing a GeneratedKeyHolder in the update call. This is returning the error "A result was returned when none was expected". Docs link.
I've tried passing a GeneratedKeyHolder and array of column names (new String[] {"transaction_id"}). This is returning the error that the column doesn't exist. Note this method call does work to return the transaction id when I only pass the INSERT query without the preceding UPDATE query. Docs link.
How can I retrieve the generated key? Thank you!
You seem to be looking for the RETURNING clause. Assuming that the serial number is called transaction_id:
INSERT INTO transactions (transaction_amout)
VALUES (:transaction_amount)
RETURNING transaction_id;
I have developed a java program and I need to update and insert the login details of users. I have two textfields created and two buttons name add user and edit the user. when I type the username and password in the two textfields the user added to the database successfully, the error is in the edit user, I want to update the password of the user based on username,
I'm getting SQL error when trying to update the user,
here is my SQL query for updating the password of a user based on his username,
String sql = "UPDATE Admin SET password='"+JT_pass1.getText()+"' WHERE
username = "+JT_username1.getText();
when i execute im getting this error,
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column
'sss' in 'where clause'
"sss" is what I entered to username field,
Mysql database I have admin table which consists of two columns admin and username,
I cannot figure out where am I getting wrong, please any help would be highly appreciated.
Your immediate problem is that you forgot to place single quotes around the username in your query. Hence, the database is interpreting sss as a column. But you should really be using prepared statements:
String query = "UPDATE Admin SET password=? WHERE username = ?";
PreparedStatement update = con.prepareStatement(query);
update.setString(JT_pass1.getText());
update.setString(JT_username1.getText());
update.executeUpdate();
There are many advantages to using prepared statements. First, it will automatically take care of proper escaping of strings and other types of data. In addition, it will prevent SQL injection from happening.
To get this to work, you need to add quotes around the username like so:
String sql = "UPDATE Admin SET password='"+JT_pass1.getText()+"' WHERE
username = '"+JT_username1.getText()+"'";
However, updating the database this way is vulnerable to SQL injection, so it would be much better to use Prepared Statements.
To consider "JT_username1.getText()" as a part of you query string, you have to enclose it under proper quotation.
Same like added "JT_pass1.getText()" between single and double quote, you have to add "JT_username1.getText()" as well.
String sql = "UPDATE Admin SET password='" + JT_pass1.getText() + "' WHERE username = '"+JT_username1.getText()+"'";
I'm connecting to a database using jdbc, getting list of all schemas and tables from database (I assume that some databases may return at this point only tables which current user can query, but some of databases return full list of tables) and when user try to query some tables he get "insufficient privileges" error.
Is there a way to get only tables, user can query using only jdbc capabilities? Without writing special query to database.
Now I'm looking at
DatabaseMetaData dbMeta = connection.getMetaData()
dbMeta.getTablePrivileges(null, null, null);
But from result of this query it's not so clear which exactly tables can user query.
Currently I'm working with SAP HANA database, but in general it may be any database, so I'm looking for some common approach.
Please look at
http://docs.oracle.com/javase/7/docs/api/java/sql/DatabaseMetaData.html#getTablePrivileges%28java.lang.String,%20java.lang.String,%20java.lang.String%29
You have to get the each row from the ResultSet and query of column name TABLE_NAME which contains the table name and PRIVILEGE which contains the access of each table.
I have data in a mySQL database table. I am selecting this data and trying to insert it to a Netezza database table. I am using the spring framework and have a entity class called Student.
Some of the fields in the mySQL database table are in Integer format but the equivalent field in Netezza is in character format.
I am using a JDBC template and getting the data from mySQL and inserting that Student object to Netezza.
Here is my method:
String sqlStudent="INSERT INTO STUDENT(STUDENTID,CLASSID,COURSEID,TESTDATE,SCOREDATE) VALUES (?,?,?,?,?)";
netezzaJDBCTemplate.update(sqlStudent,new Object[] {student.getStudentId(),student.getClassId(),student.getCourseId(),student.getTestDate(),student.getScoreDate)});
I get an error when I do this. I even tried hard coding the INSERT.
Exception in thread "main" org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [INSERT INTO STUDENT(STUDENTID,CLASSID,COURSEID,TESTDATE,SCOREDATE) VALUES (1521995,134,21,'2014-02-15 00:00:00','2014-02-15 00:00:00') )]; nested exception is org.netezza.error.NzSQLException: Parameter Index out of range: 1
Is this because of the difference in the column data types between the 2 databases? or am I missing something else?
Please help.
new studentMapper() might be the issue. JdbcTemplate's update method wont accept RowMapper correct?
If your are not using NamedParameterJdbcTemplate try to prefer that over regular JdbcTemplate which lets you bind the sql params with names.
I want to display the data of a postgresql database using the CRUD in the play framework; I looked for any examples to get idea which I didn't find after a long time of searching in google. Someone help me with this if you can or post a valid link regarding this. Thanks in advance!
I use, Play 1.2.5, java and postgresql.
I assume you want to do this in your application code in runtime.
You can execute query using DB plugin to search DB metadata using native PostgreSQL queries.
Here's an example how to get column names of my system DOCUMENT table:
List<String> columns = new ArrayList<>();
ResultSet result = DB.executeQuery("select column_name from INFORMATION_SCHEMA.COLUMNS where table_name = 'DOCUMENT';");
while(result.next()) {
String column = result.getString(1);
columns.add(column);
}
This note that code is somewhat simplified and you should use prepared statements if anything in this query will be inserted from data that user or any other system entered.
Use DB.getConnection().prepareStatement() to get PreparedStatement instance.