Convert ‘time’ to ‘datetimeoffset’ in SQL Server (T-SQL Examples)

This article contains examples of converting a time value to a datetimeoffset value in SQL Server using Transact-SQL.

When you convert a time value to datetimeoffset, the date is set to ‘1900-01-01’ and the time is copied. A time zone offset is added and set to +00:00.

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Examples of Converting ‘time’ to ‘datetime’ in SQL Server (T-SQL)

This article contains examples of converting a time value to a datetime value in SQL Server.

When you convert a time value to datetime, extra information is added to the value. This is because the datetime data type contains both date and time information. The time data type, on the other hand, only contains time information. Therefore, date information is added to the value when you perform such a conversion. Specifically, the date is set to ‘1900-01-01’.

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Examples of Converting ‘date’ to ‘datetimeoffset’ in SQL Server (T-SQL)

This article contains examples of converting a date value to a datetimeoffset value in SQL Server.

When you convert a date value to datetimeoffset, extra information is added to the value. This is because the datetimeoffset data type contains both date and time information, as well as the time offset information. In other words, the datetimeoffset data type defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hour clock. The date data type, on the other hand, only contains date information.

When we convert from date to datetimeoffset, the time (and time zone offset) is automatically added to the value. However, you can always change the value if required (including the time zone offset).

The datetimeoffset data type also allows you to specify the fractional seconds precision. If you don’t specify this, it uses a scale of 7. This means it will include 7 digits on the right side of the decimal point.

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Examples of Converting ‘date’ to ‘smalldatetime’ in SQL Server (T-SQL)

This article contains examples of converting a date value to a smalldatetime value in SQL Server.

When you convert a date value to smalldatetime, extra information is added to the value. This is because the smalldatetime data type contains both date and time information. The date data type, on the other hand, only contains date information.

However, there are cases where a date to smalldatetime conversion might fail. In particular, if the date value is outside the range supported by smalldatetime then it will fail with an error.

In any case, below are examples of converting between these two data types.

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Examples of Converting ‘date’ to ‘datetime2’ in SQL Server (T-SQL)

This article contains examples of converting a date value to a datetime2 value in SQL Server.

When you convert a date value to datetime2, extra information is added to the value. This is because the datetime2 data type contains both date and time information. The date data type, on the other hand, only contains date information.

The datetime2 data type is basically an extension of the datetime data type. It has a larger date range, a larger default fractional precision, and optional user-specified precision.

In any case, the conversion process is exactly the same regardless of the data type. The only difference is the amount of information that’s available between date, datetime and datetime2.

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Examples of Converting ‘date’ to ‘datetime’ in SQL Server (T-SQL)

This article contains examples of converting a date value to a datetime value in SQL Server.

When you convert a date value to datetime, extra information is added to the value. This is because the datetime data type contains both date and time information. The date data type, on the other hand, only contains date information.

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PARSE() vs CAST() vs CONVERT() in SQL Server: What’s the Difference?

Perhaps you’ve encountered the T-SQL PARSE(), CAST(), and CONVERT() functions when working with SQL Server and wondered what the difference is. All three functions seem to do the same thing, but there are subtle differences between them.

In this article I aim to outline the main differences between these functions.

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PARSE() vs TRY_PARSE() in SQL Server: What’s the Difference?

In SQL Server, the PARSE() and TRY_PARSE() functions are used for translating a value into another data type. They essentially do the same thing, with one exception; how they deal with errors.

If PARSE() fails when attempting to parsing to a different data type, it will return an error. If TRY_PARSE() fails, it will return NULL.

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6 Ways to Convert a String to a Date/Time Value in SQL Server

If you need to convert a string into a date/time value in SQL Server, you have a number of options. In this post I outline six T-SQL functions that allow you to do this.

The six functions are:

  • CAST()
  • CONVERT()
  • PARSE()
  • TRY_CAST()
  • TRY_CONVERT()
  • TRY_PARSE()

Below are example of how you can use these functions to convert a string to a date/time data type.

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