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SQL Server FAQ - What Is a Transact-SQL Statement

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What Is a Transact-SQL Statement?

A Transact-SQL statement is a basic execution unit of the Transact-SQL language. Here are some examples of Transact-SQL statements:

• "CREATE TABLE ...;" - A data definition language statement that defines a table.
• "INSERT INTO ...;" - A data manipulation language statement that inserts data into a table.
• "SELECT * FROM ...;" - A query statement that returns data from a table.
• "DROP TABLE ...;" - A data definition language statement that deletes a table.
• "DECLARE @name data_type;" - A declaration statement that defines a local variable.
• "SET @name = expression;" - An assignment statement that assigns a value to a local variable.
• "BEGIN TRANSACTION;" - A transaction management statement that marks the beginning of a transaction.
• "ROLLBACK TRANSACTION;" - A transaction management statement that rolls back all changes of a transaction.

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1. What Is SQL Language?
2. What Is Transact-SQL Language?
3. What Is a Transact-SQL Statement?
4. How To Start and End Transact-SQL Statements?
5. How To Enter Comments in Transact-SQL Statements?
6. What Is a Transact-SQL Statement Batch?
7. What Happens to a Statement Batch If There Is a Compilation Error?
8. How To Use GO Command in "sqlcmd"?
9. How To Create User Messages with PRINT Statements?
10. How Many Categories of Data Types Used by SQL Server?
11. What Are Exact Numeric Data Types?
12. What Are Approximate Numeric Data Types?
13. What Are Date and Time Data Types?
14. What Are Character String Data Types?
15. What Are Unicode Character String Data Types?
16. What Are Binary String Data Types?
17. What Are the Differences between CHAR and NCHAR?
18. What Are the Differences between CHAR and VARCHAR?
19. What Are the Differences between DECIMAL and FLOAT?