SQL UPDATE DATE

SQL UPDATE DATE: How to Update a Date and Time Field in SQL?

SQL UPDATE DATE

Updating a date and time field in SQL is a common requirement, especially when managing records that involve timestamps. In this guide, we will explore how to use the UPDATE statement to modify date and time values in a structured query language (SQL) database.

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Syntax of SQL UPDATE Date

To update a date and time field in SQL, you should use the following query syntax:

UPDATE Table_Name  
SET Column_Name = 'YYYY-MM-DD HH:MM:SS'  
WHERE Id = value;

This query updates the specified column with a new date and time value for the row that matches the given Id.

Example: Updating a Date and Time Field

Let’s assume we have a table named EmployeeRecords where we want to update a date and time field.

Table: EmployeeRecords

Id EmployeeName JoiningDate
1 Aman Verma 2023-05-10 09:30:00
2 Neha Sharma 2023-06-15 11:00:00

Now, if we want to change the JoiningDate of the employee with Id = 1, we can execute the following SQL statement:

UPDATE EmployeeRecords  
SET JoiningDate = '2024-02-20 08:45:00'  
WHERE Id = 1;

Updated Table: EmployeeRecords

Id EmployeeName JoiningDate
1 Aman Verma 2024-02-20 08:45:00
2 Neha Sharma 2023-06-15 11:00:00

Important Notes:

  • SQL automatically appends 00:00:00.000 if no time is specified in a DATETIME column.
  • The WHERE clause is essential to ensure only the intended record is updated.
  • Always double-check your query before executing it to avoid accidental data loss.

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Conclusion

Using the UPDATE statement in SQL, you can modify date and time fields efficiently. This approach helps maintain accurate and up-to-date information in your database. Whether it’s updating an employee’s joining date, modifying a booking timestamp, or changing a record’s expiration date, SQL provides a simple and effective way to handle such updates.

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