UpdateRow() of ResulSet

Question

hi,
to update any row of a table using ResultSet.updateRow() API, is there any condition like, the table should have a primary key compulsorily. I am using some third party implementation of JDBC code and when i try to udpate a table which does not have a primary key with updateRow() API from application, it's giving an exception saying "No primary key for the table".
I dont see any reason for this behavoiur and hope the problem is with the implemetation of JDBC code by the third party. Please let me know your valuable inputs...........

Answer 1

Praveen_Forum wrote:
An updatable result set allows modification to data in a table through
the result set. If the database does not support updatable result
sets, the result sets returned from executeQuery() will be
read-only. To get updatable results, the Statement object used to
create the result sets must have the concurrency type
ResultSet.CONCUR_UPDATABLE.
The query of an updatable result set must specify the primary
key as one of the selected columns and select from only one table.
For some drivers, `SELECT * FROM my_table' will return a read-only
result set, so make sure that you specify the column names.
try {
// Create a statement that will return updatable result sets
Statement stmt = connection.createStatement(
ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
// Primary key col_string must be specified so that the result set is updatable
ResultSet resultSet = stmt.executeQuery("SELECT col_string FROM my_table");
} catch (SQLException e) {
what is the point your driving? whatever you copy pasted is not what i asked..... please give me proper answer else dont mislead....