Скачать или смотреть How to Convert a Date from MM/DD/YY to YYYY-MM-DD Format in SQL Server 2012

Step-by-step guide on converting dates from MM/DD/YY format to YYYY-MM-DD format in SQL Server 2012.
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How to Convert a Date from MM/DD/YY to YYYY-MM-DD Format in SQL Server 2012

Working with date formats in SQL Server 2012 can be challenging, especially when dealing with different formats such as MM/DD/YY. In this guide, we will walk you through converting a date string from the MM/DD/YY format to the ISO standard YYYY-MM-DD format in SQL Server 2012.

Why Date Formatting is Important

In SQL Server and most other databases, date formatting consistency is crucial for accurate data manipulation and retrieval. Using the standard YYYY-MM-DD format helps to maintain uniformity and prevent errors in your databases.

The Conversion Process

To convert a date from MM/DD/YY format to YYYY-MM-DD format in SQL Server, you can use the built-in CONVERT function along with the correct style code for the target format. Here’s how you can achieve this:

Example Scenario

Suppose you have a column named date_column in your table my_table which contains dates in the format MM/DD/YY. You need to convert these dates to the YYYY-MM-DD format.

SQL Query

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Query

CAST(date_column AS DATE): First, we cast the date_column to a DATE data type to ensure SQL Server recognizes it as a valid date.

CONVERT(VARCHAR(10), ..., 120): Then, we use the CONVERT function to transform the DATE into a VARCHAR string in the format of YYYY-MM-DD. The 120 style code specified in the CONVERT function is used to achieve this standard ISO format.

Conclusion

By following the above method, you can seamlessly convert date formats in SQL Server 2012. This ensures that your dates are stored and processed in a consistent manner, enhancing the reliability and readability of your data sets.

Maintaining a standard date format within your databases simplifies data handling and reduces the risk of errors. If you often work with different date formats, having a solid understanding of SQL Server's date conversion functions will greatly benefit your daily operations.