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SQL Server FAQ - Deleting All Rows with TRUNCATE TABLE Statement

By: FYIcenter.com

(Continued from previous topic...)

How To Delete All Rows with TRUNCATE TABLE Statement?

If you want to delete all rows from a table, you have two options:

  • Use the DELETE statement with no WHERE clause.
  • Use the TRUNCATE TABLE statement.

The TRUNCATE statement is more efficient the DELETE statement. The tutorial exercise shows you a good example of TRUNCATE statement:

SELECT COUNT(*) FROM fyi_rates
GO
5

TRUNCATE TABLE fyi_rates
GO

SELECT COUNT(*) FROM fyi_rates
GO
0

  1. What Are DML (Data Manipulation Language) Statements?
  2. How To Create a Testing Table with Test Data?
  3. How To Insert a New Row into a Table with "INSERT INTO" Statements?
  4. How To Use Column Default Values in INSERT Statements?
  5. How to provide column names in INSERT Statements?
  6. What Happens If You Insert a Duplicate Key for the Primary Key Column?
  7. How To Insert Multiple Rows with One INSERT Statement?
  8. How To Update Values in a Table with UPDATE Statements?
  9. How To Update Multiple Rows with One UPDATE Statement?
  10. How to use old values to define new values in UPDATE statements?
  11. Is the Order of Columns in the SET Clause Important?
  12. How To Use Values from Other Tables in UPDATE Statements?
  13. What Happens If the UPDATE Subquery Returns No Rows?
  14. What Happens If the UPDATE Subquery Returns Multiple Rows?
  15. How To Delete an Existing Row with DELETE Statements?
  16. How To Delete Multiple Rows with One DELETE Statement?
  17. How To Delete All Rows with DELETE Statements?
  18. How To Delete All Rows with TRUNCATE TABLE Statement?

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