The importance of knowing what type of T SQL interview questions to expect for a SQL developer preparing for a T SQL interview cannot be overstated. T SQL, or Transact Structured Query Language, is a SQL extension supported by Microsoft SQL Server and Sybase ASE. This article includes sample T SQL interview questions that will assist and direct you in your T SQL interview preparation.
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In this article, we’ll learn:
Let us look at some sample T SQL interview questions and answers for fresher and experienced developers to get you started:
Q1. What is the max number of rows we can construct by inserting rows directly in the VALUE list?
The maximum number of rows we can construct by inserting rows directly in the VALUE list is 1000.
Q2. What are all the indexes we can have in a table?
We can have a single Clustered Index, one or more nonclustered indexes, unique index, filtered, XML, spatial, etc.
Q3. What is the maximum number of nonclustered indexes we can have in a table?
We can create, at max, 249 nonclustered indexes in a table.
Q4. Define the Scope Of A Temporary Table.
The Scope Of A Temporary Table is only limited to its session.
Q1. State the default isolation level along with the highest and the lowest.
The highest isolation level is SERIALIZABLE, the lowest isolation level is READ UNCOMMITTED, and the default isolation level is READ COMMITTED.
Q2. Name the types of temporary tables in SQL Server.
Temporary tables are of three types: Local temp tables (#), Global temp tables (##), and Table variables (@).
Q3. Name the necessary parameters that must be passed with a raiseerror statement?
The necessary parameters that must be passed with a raiseerror statement are message _id/message_str, severity, and state.
Here are some frequently asked T SQL interview questions to help you prepare for your tech interview:
Q1. What is T SQL?
T SQL, or Transact Structured Query Language, refers to a set of extensions to SQL that add features like transaction control, exception handling, error handling, row processing, etc., supported by Microsoft SQL Server and Sybase ASE.
Q2. Differentiate between SQL and T SQL.
SQL, or Structured Query Language, operates on sets. At the same time, Transact SQL or TSQL is a proprietary procedural language used by MS SQL Server and implements UPDATE and DELETE differently compared to SQL.
Q3. Differentiate between PL SQL and T SQL.
PL SQL has SQL embedded and is a procedural programming language. T SQL is a set of procedural extensions for SQL used by MS SQL Server.
Q4. Is T SQL difficult?
No! T SQL is easy to learn. For developers, learning the syntax is most of the battle.
Q5. Is T SQL ANSI compliant?
No. As a proprietary form of SQL used by Microsoft SQL Server, T SQL includes special functions like date, cast, convert, etc., which are not included in the ANSI standard.
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