The example creates a table and defines a unique constraint on the column TransactionID. To create a unique constraint on a new tableĬopy and paste the following example into the query window and select Execute. USE AdventureWorks2012 ĪDD CONSTRAINT AK_Password UNIQUE (PasswordHash, PasswordSalt) The example creates a unique constraint on the columns PasswordHash and PasswordSalt in the table Person.Password. To create a unique constraint on an existing tableĬopy and paste the following example into the query window and select Execute. USE AdventureWorks2012 ĬREATE TABLE Production.TransactionHistoryArchive4ĬONSTRAINT AK_TransactionID UNIQUE(TransactionID) The example creates the table TransactionHistoryArchive4 and creates a unique constraint on the column TransactionID. In Object Explorer, connect to an instance of Database Engine.Ĭopy and paste the following example into the query window and select Execute. Use Transact-SQL To create a unique constraint On the File menu, select Save table name. In the grid under General, select Type and choose Unique Key from the drop-down list box to the right of the property, and then select Close. In the Indexes/Keys dialog box, select Add. The syntax for UNIQUE key definition may vary slightly by database engine, but in general it is: ALTER TABLE TableName ADD CONSTRAINT UNIQUEKeyName. Or you can add them later using the ALTER TABLE command, as shown below.
On the Table Designer menu, select Indexes/Keys. UNIQUE keys can be created during table creation. In Object Explorer, right-click the table to which you want to add a unique constraint, and select Design. Use SQL Server Management Studio To create a unique constraint Start DbVisualizer.See Primary key, foreign key, and unique key in Azure Synapse Analytics for information on unique constraints in Azure Synapse Analytics.If there is a jre.bundle link or folder in the PlugIns folder, rename it (for backup purposes) with:.If the PlugIns folder doesn't exist create it with: mkdir PlugIns.
#Dbvisualizer unique constraint install
If you want to use a different Java version, you must download and install the Java JDK for that version (there is no way to select a specific JRE version). Last, it looks for a matching Java (JDK) version in /Library/Java/JavaVirtualMachines.Any installed Java (JRE) in /Library/Internet Plug-Ins/ugin.Java installed with DbVisualizer in DbVisualizer.app/Contents/PlugIns/jre.bundle.On macOS, this is the search order for Java when launching DbVisualizer: Add the complete path to the root directory for the Java installation you want to use.Įxamples: Windows: C:\Program Files\Java\jre8, Linux/UNIX: /usr/java/jdk1.8.0_131Īn alternative solution is to set the DBVIS_JAVA_HOME environment variable to point to the root directory for the Java installation.Įxample: DBVIS_JAVA_HOME= C:\Program Files\Java\jre8.In this directory create a file named pref_jre.cfg if it doesn't already exist,.In the DbVisualizer installation directory there is an.
Verify this by checking in the DbVisualizer installation folder that there is no jre folder there. Make sure you are using DbVisualizer which do not bundle Java with the DbVisualizer installation. Please see the Download page which java versions that are supported. Note: When changing the Java version you must change to a Java version that is supported by DbVisualizer for the specific platform.
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