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ALTER Table Customers
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WITH NOCHECK
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ADD CONSTRAINT CN_NOCHECK
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CHECK
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(NAME LIKE 'GEEWU%')
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临时禁用表的约束(NO CHECK)
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ALTER TABLE Customers
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NOCHECK
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CONSTRAINT CN_GeeWu
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查看禁用表约束 (Watch Table's CHECK)
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EXEC sp_helpconstraint Customers
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重新启用禁用表的约束(CHECK)
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ALTER TABLE Customers
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CHECK
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CONSTRAINT CN_GeeWu
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创建规则
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CREATE RULE SalaryRule
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AS @GeeWu = 'GeeWu'
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查看规则内容
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EXEC sp_helptext SalaryRule
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应用规则
sp_bindrule <'rule'> , <'object_name'>,[<'futureonly_flag'>]
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EXEC sp_bindrule 'SalaryRule' , 'Employees.Salary'
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取消应用的规则
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EXEC sp_unbindrule 'SalaryRule' , 'Employees.Salary'
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消除规则
DROP RULE <'rule'>
创建默认值
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CREATE DEFAULT SalaryDefault
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AS 0
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应用默认值
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EXEC sp_bindefault 'SalaryDefault','Employees.Salary'
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取消默认值
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EXEC sp_unbindefault 'Employees.Salary'
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删除默认值
DROP DEFAULT <默认值>
确定那个表或者数据类型上使用了制定的规则或默认值
EXEC sp_depends <对象名>