Question

I want to check wether a table named basestation exists in a MySQL table from a Java program using JDBC. My code is:

conn = DriverManager.getConnection(url, username, password);

DatabaseMetaData dbm = conn.getMetaData();

tables = dbm.getTables(null, null, "basestations", null);

if (tables.next())
{   
     //Table exists in database
     //...
}
else
{
     //Table does not exist
     //...
}

but although table basestations exists in my database it seems that my code never enters the first clause and always decides that table does not exist, causing naturally a table already exists in database SQL error when trying to create the table from the beginning.

Answer 1

Not the best way to do it below.. But you could do the following:

Use JDBC to send the following statement:

select count(*) from information_schema.tables where information_schema.table_schema='your_schema' and information_schema.table_name='basestations';

Parse the jdbc result set.

That should return either 1 or 0. If the resulting count is 1, then the table exists, otherwise, it does not.