On Feb 24, 2010, at 11:17 AM, Jarl Friis wrote:
Hi.
This must be the most obvious thing to do, but I just can't seem to
find examples of how to do this. I would like to create a table with a
table unique constraint on database level.
In deed some migration code that would generate the following SQL
CREATE TABLE properties (
namespace CHAR(50),
name CHAR(50),
value VARCHAR(100),
CONSTRAINT my_constraint UNIQUE (namespace, name)
);
create_table :properties.....
.....
end
add_index :properties, [:namespace, :name], :unique => true
Jarl
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