SQL vs PL-SQL vs T-SQL – Difference Between Them

Key Difference between SQL, PL-SQL and T-SQL

SQL is the standard language to query a database. Where PL SQL basically stands for “Procedural Language extensions to SQL.” This is the extension of Structured Query Language (SQL) that is used in Oracle. Whereas, T-SQL basically stands for ” Transact-SQL.” This is the extension of Structured Query Language (SQL) that is used in Microsoft. Also, T-SQL has a different implementation of DELETE and UPDATE than SQL.

What is SQL?

SQL is the standard language for dealing with Relational Databases. SQL can be used to insert, search, update, and delete database records. SQL can do lots of other operations, including optimizing and maintenance of databases.

What is PL/SQL?

Oracle PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super powerful SQL queries. PL/SQL ensures seamless processing of SQL statements by enhancing the security, portability, and robustness of the Database.

What is T-SQL?

T-SQL stands for Transact Structured Query Language. It is an extension of SQL functionality supported by Microsoft SQL Server and Sybase ASE.

Difference between SQL and PL/SQL

SQL	PL/SQL
SQL is a single query that is used to perform DML and DDL operations.	PL/SQL is a block of codes that used to write the entire program blocks/ procedure/ function, etc.
It is declarative, that defines what need to be done, rather than how things need to be done.	PL/SQL is procedural that defines how the things needs to be done.
Execute as a single statement.	Execute as a whole block.
Mainly used to manipulate data.	Mainly used to create an application.
Interaction with a Database server.	No interaction with the database server.
Cannot contain PL/SQL code in it.	It is an extension of SQL, so that it can contain SQL inside it.

Difference Between T-SQL and PL-SQL

T-SQL	PL-SQL
T-SQL is a Microsoft product.	PL-SQL is developed by Oracle.
Full Form of TL SQL is Transact Structure Query language.	Full Form of PL SQL is Procedural Language Structural Query Language.
T-SQL gives a high degree of control to programmers.	It is a natural programming language that blends easily with the SQL
T-SQL performs best with Microsoft SQL server	PL-SQL performs best with Oracle database server.
It is easy and simple to understand.	PL-SQL is complex to understand.
T-SQL allows inserting multiples rows into a table using the BULK INSERT statement.	PL/SQL supports oops concepts like data encapsulation, function overloading, and information hiding.
SELECT INTO statement used in T-SQL	INSERT INTO statement must be used in PL/SQL
In T-SQL NOT EXISTS clause used along with SELECT statements.	In PL/SQL, there is a MINUS operator, which could be used with SELECT statements

Difference between SQL and T-SQL

SQL	T-SQL
SQL is a programming language which focuses on managing relational databases.	T-SQL is a procedural extension used by SQL Server.
This is used for controlling and manipulating data where large amounts of information are stored about products, clients, etc.	T-SQL has some features that are not available in SQL. Like procedural programming elements and a local variable to provide more flexible control of how the application flows.
SQL queries submitted individually to the database server.	T-SQL writes a program in such a way that all commands are submitted to the server in a single go
The syntax was formalized for many commands; some of these are SELECT, INSERT, UPDATE, DELETE, CREATE, and DROP.	It also includes special functions like the converted date () and some other functions which are not part of the regular SQL.