Is actually a constraint that enforces entity integrity for any specified column or columns through a one of a kind index. Just one Main Important constraint could be designed for every table. Exceptional
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The predicate will have to phone a deterministic inline table-valued purpose. For more info, see Allow Extend Database for the table and Select rows to migrate by using a filter function.
The REFERENCES clause of the column-level FOREIGN KEY constraint can record just one reference column. This column have to have the exact same info sort since the column on which the constraint is described.
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Any time a rule and one or more CHECK constraints exist for your column or columns, all limitations this article are evaluated.
Every one of the values which make up the her comment is here international crucial are set to NULL when the corresponding row in the dad or mum table is up to date. For this constraint to execute, the foreign essential columns has to be nullable. Established DEFAULT
If A brief table is developed having a named constraint and also the momentary table is designed in the scope of a person-described transaction, just one user at a time can execute the assertion that makes the temp table. As an example, if a stored procedure makes a temporary table with a named Most important vital constraint, the stored procedure can not be executed simultaneously by multiple buyers. Database scoped world wide momentary tables (Azure SQL Database)
Specifies how entire the Databases Engine need to make Just about every index web site which is accustomed to retailer the index info. Person-specified fillfactor
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is specified. If "default" is specified, or if TEXTIMAGE_ON just isn't specified at all, the massive worth columns are saved inside the default filegroup. The storage of any navigate here significant benefit column knowledge laid out in Develop TABLE can not be subsequently altered.
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