ADD unique constraint A unique constraint is applied on the column in the table by following the rule that the values are valid only if they are unique. Here we have taken a table name items that were already created; we have now added a unique constraint on the id column of it. The ...
private void AddConstraint(DataTable table) { UniqueConstraint uniqueConstraint; // Assuming a column named "UniqueColumn" exists, and // its Unique property is true. uniqueConstraint = new UniqueConstraint( table.Columns["UniqueColumn"]); table.Constraints.Add(uniqueConstraint); } Remarks If th...
ForeignKeyConstraintError ForeignKeyConstraintWarning ForeignKeyError ForeignKeyRelationship ForeignKeyWarning Вилка ForkNode FormatDocument FormatPageLeft FormatPageRight FormatSelection FormattingToolbar FormDigest FormInstance FormPostBodyParameterNode FormPostBodyStringNode FormTag Вперед Переа...
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[CONSTRAINT_NAME]') AND type in (N'U')) BEGIN ... END ELSE Monday, July 21, 2008 9:43 PM Is it correct for drop it? I can't find an example for drop a constraint. Code...
This constraint will be checked prior to starting any batch. The value of this field should be between 5 and 100, inclusive. If both maxBatchInstancePercent and maxUnhealthyInstancePercent are assigned with value, the value of maxBatchInstancePercent should not be more than maxUnhealthyInstance...
Any indexes related to the constraint are also replicated, even if options 0x10 and 0x40 aren't enabled. 0x8000 This option isn't valid for Publishers running SQL Server 2005 (9.x) and later versions. 0x10000 Replicates CHECK constraints as NOT FOR REPLICATION so that the constraints aren'...
In SQL-based databases, a NOT NULL constraint allows us to ensure that the data that is stored in a specific column does not contain any NULL values. For example, if we add a NOT NULL constraint to a table column, we enforce a rule that a value MUST be provided for that column. Thi...
The justification isn't the cmp package, it's that we need a mechanism to compare values against their zero value, even if their constraint is not comparable. All types allow doing that, but there currently is no way to write a generic function that does it. The cmp package is one cons...
In the post_randomize() override, the randomized value is printed out so that SNR values can be related to whether pulses are detected or not. It uses a class utility function fixed2real to give a friendly value. In the randomize_params() override, an in-line constraint of "randomize wit...
Confirmation—Require end users to check the check box to close the window. This constraint applies to all close methods. This interaction type shows the window once by default, unless you turn onAlways show this window. "Don't show this again" option—End users check this box in the windo...