如何在squeryl模式中组合列中的唯一约束?
A | B
2 1 allow
2 3 allow
3 1 allow
2 1 don't allow same with row one
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你试过这个吗?
on(authors)(s => declare(
columns(s.firstName, s.lastName) are(unique)
))
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http://squeryl.org/schema-definition.html