0

address

addrId street
1 Berkeley
0 Berkeley

name

addrId name
0 Fred Jam
1 Bread Mi
...
String sql = "select * from address, name";

statement = connection.createStatement();
ResultSet results = statement.executeQuery(sql);

...

when this code execute, occur Error

Error Message is

"java.sql.SQLException: Cannot invoke "[Ljava.lang.String;.clone()" because "columnNames" is null"

I want to play "select * from join table"

What do i do?

Help me please.

andrewJames
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hunny
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0 Answers0