Total Page Preview:   000000001307

What is Table Variable? Explain its advantages and disadvantages?

  • If we want to store tabular data in the form of rows and columns into a variable then we use a table variable.
  • It is able to store and display 2D data (rows and columns).
  • We cannot perform DDL (CREATE, ALTER, DROP).
 
Advantages:
  • Table variables can be faster than permanent tables.
  • Table variables need less locking and logging resources.
 
Disadvantages:
  • Scope of Table variables is batch bound.
  • Table variables cannot have constraints.
  • Table variables cannot have indexes.
  • Table variables do not generate statistics.
  • Cannot ALTER once declared (Again, no DDL statements).

Thank You

About Author

Brijesh Kumar

Database Developer

I have more then 6 years Experience in Microsoft Technologies - SQL Server Database, ETL Azure Cloud - Azure SQL Database, CosmosDB, Azure Data Factory, PowerBI, Web Job, Azure Function, Azure Storage, Web Apps, Powershall and Database Migration On-Premise to Azure Cloud.
LinkedIn : https://www.linkedin.com



Comments


                           
                           
                           
                           

Recent Posts

How to get the alternate rows or records from table in sql server
07-Jun-2017
 Data Warehouse Three Tier Architecture
20-Aug-2017
 SQL Server - Fragmentation on azure sql database
07-Oct-2018
 Limitations of Azure SQL Database
19-Sep-2019
 PIVOT and UNPIVOT in SQL Server with Example
29-Jun-2017
 SQL Server - Find unused indexes on azure SQL database scripts
02-Oct-2018
 SQL Server - Find all index with key columns on Azure SQL Database
02-Oct-2018
 Find Resource usage in Azure SQL Database using script or T-SQL
07-Oct-2018
 How to Set client IP Address using the firewall security in Azure SQL Using Portal
29-Jun-2017
 What are the types of User Define Function and difference between a nested UDF and recursive UDF in SQL server?
10-Sep-2021
 Top 60 SQL Server Interview Questions Answers for freshers and experienced
17-Sep-2021
 Top 16 performance query optimization techniques in SQL Database?
16-Sep-2021
 What is a Trigger and type of trigger in SQL server?
10-Sep-2021
 How many types of dimension tables available in data warehouse?
16-Sep-2021
 Data warehouse Interview Questions Answers for freshers and experienced
16-Sep-2021
 What are the differences between OLTP and OLAP?
07-Sep-2021
 What is Table Variable? Explain its advantages and disadvantages?
10-Sep-2021
 What are the different types of Error Handling in SQL Server?
11-Sep-2021
 Cloud Data Engineer SQL Server Interview Questions Answers for freshers and experienced
31-Aug-2021
 What are characteristics and advantages of stored procedure?
10-Sep-2021

Facebook User: