Search results
People also ask
What is a user defined table type?
What is a user-defined table type in SQL Server 2008?
What is a user-defined table?
Can user-defined table types be altered after they are created?
Jan 4, 2020 · A user-defined table type is a user-defined type that represents the definition of a table structure. We can use user-defined table type to declare table-valued parameters for stored procedures or functions, or to declare table variables that we want to use in a batch or in the body of a stored procedure or function.
- Overview
- Examples
- Creating a User Defined Table in Visual Basic
- Creating a User Defined Table in Visual C#
- Creating a User Defined Table in PowerShell
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics
User-defined tables represent tabular information. They are used as parameters when you pass tabular data into stored procedures or user-defined functions. User-defined tables cannot be used to represent columns in a database table.
The Database object has a UserDefinedTableTypes property that references a UserDefinedTableTypeCollection object. Each UserDefinedTableType object in that collection has a Columns property that refers to a collection of Column objects that list the columns in the user-defined table. Use the Add method to add columns to the user-defined table.
When you define a new user-defined table by using the UserDefinedTableType object, you will have to supply columns and a primary key based on one of the columns.
User-defined table types cannot be altered after they are created. The UserDefinedTableType does not support the Alter method. User-defined table types can have check constraints, but some check operations will throw an exception because the type is not alterable.
The DataType class is used to specify the data type that is associated with columns and parameters. Use this type to specify the user-defined table type as a parameter for user-defined functions and stored procedures.
To use any code example that is provided, you will have to choose the programming environment, the programming template, and the programming language in which to create your application. For more information, see Create a Visual C# SMO Project in Visual Studio .NET.
For this example, you will have to include an imports statement for the class library that contains the StringCollection type.
Imports System.Collections.Specialized
For this example, you will have to include an imports statement for the class library that contains the StringCollection type.
using System.Collections.Specialized;
For this example, you will have to include an imports statement for the class library that contains the StringCollection type.
using System.Collections.Specialized;
Nov 3, 2020 · SQL Server allows a particular data type [table] to store a data set. In this data type, we specify the data types and their properties similar to a table. In the below user-defined table type, we defined two columns [ProductName] and [Cost] with their corresponding data types.
Oct 13, 2023 · In this article you will learn about User Defined Table Types and Table-Valued Parameters. The concepts of User-Defined Table Types (UDTTs) and Table-Valued Parameters (TVPs) were introduced in SQL Server 2008.
User defined table types (UDT for short) are data types that allows the user to define a table structure. User defined table types supports primary keys, unique constraints and default values.
Feb 13, 2009 · I saw a post about a user defined table type in SQL Server and I was sure it was a typo. I kept thinking the poster meant table variable, but when I searched the term in Books Online, I was...
Feb 28, 2023 · A standard user-defined table can have up to 1,024 columns. The number of rows in the table is limited only by the storage capacity of the server. You can assign properties to the table and to each column in the table to control the data that is allowed and other properties.
