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Add Foreign Key to existing table
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ALTER TABLE users ADD grade_id SMALLINT UNSIGNED NOT NULL DEFAULT 0;
ALTER TABLE users ADD CONSTRAINT fk_grade_id FOREIGN KEY (grade_id) REFERENCES grades(id);
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answered Oct 14 '08 at 8:01
OwenOwen
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Adding header for HttpURLConnection
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edited Sep 20 '18 at 12:16
Mike B.
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Rails 4 Authenticity Token
I was working on a new Rails 4 app (on Ruby 2.0.0-p0) when I ran into some authenticity token problems.
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