Updating a table variable


25-Sep-2019 05:49

updating a table variable-72

brenda balducci dating

Test Table AS TABLE ( ID INT, Name NVARCHAR(40) ) --Declaring table variable DECLARE @Test Table AS dbo.Test Table --Inserting data into table variable INSERT INTO @Test Table(ID, Name) VALUES(1, 'Abc') There is a common misconception that table variables are in memory objects.Passing table variables as a parameter provides a flexible programming model and makes the process of passing the list of parameters to a stored procedure or a function easier and logically correct.Now we will illustrate with a simple example how to use table variables as a parameter in stored procedures.A table variable is a variable data type which can be used to store temporary data.It's defined using the DECLARE keyword and the table's structure is defined in the declaration as shown below: --Creating User Defined Table Type CREATE TYPE dbo.

updating a table variable-67

Xxx women comchat

For example, when we are updating a table and the transaction is rolled back and we want to audit these uncommitted changes, we can store it in a table variable and after the rollback then insert this data into a table for auditing.Starting with SQL Server 2014, non-unique and composite indexes can be created. --Declaring table variable with primary key DECLARE @Test Table1 TABLE ( ID INT PRIMARY KEY, Name NVARCHAR(40) ) --Declaring table variable with unique key DECLARE @Test Table2 TABLE ( ID INT PRIMARY KEY , Name NVARCHAR(40) UNIQUE ) --Declaring table variable with unique clustered index DECLARE @Test Table3 TABLE ( ID INT PRIMARY KEY NONCLUSTERED, Name NVARCHAR(40) UNIQUE CLUSTERED ) --Declaring table variable with nonclustered, non-unique index ( Starting from SQL Server 2014 ) DECLARE @Test Table3 TABLE ( ID INT PRIMARY KEY, Name NVARCHAR(40), INDEX IX_Test Table3_Name NONCLUSTERED (Name) ) --Declaring table variable with composite nonclustered index ( Starting from SQL Server 2014 ) DECLARE @Test Table4 TABLE ( ID INT PRIMARY KEY, First Name NVARCHAR(40), Last Name NVARCHAR(40), INDEX IX_Test Table4_First Name_Last Name NONCLUSTERED (First Name, Last Name) ) --Declaring table variable with more than one index ( Starting from SQL Server 2014 ) DECLARE @Test Table5 TABLE ( ID INT PRIMARY KEY, First Name NVARCHAR(40), Last Name NVARCHAR(40), INDEX IX_Test Table5_First Name NONCLUSTERED (First Name), INDEX IX_Test Table5_Last Name NONCLUSTERED (Last Name) ) It's important to know the table variable restrictions and limitations when working with them.