October 2012
Intermediate to advanced
238 pages
5h 17m
English
Content preview from What's New in SQL Server 2012Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Conversion functions
SQL Server 2012 introduces some useful conversion functions that will help you avoid errors when dealing with different data types. We will use easy-to-understand examples so you can see how beneficial they are.
TRY_PARSE
TRY_PARSE doesn't look too useful on surface, but as we will soon see it has a vey useful specialist niche.
The basic syntax of TRY_PARSE is as follows:
SELECT TRY_PARSE (string AS datatype)
Each of the following will return a NULL, as the value passed in the string does not convert to a value of the data type specified as the second parameter:
SELECT TRY_PARSE ('SQL Server 2012' AS datetime) AS MyDateTime SELECT TRY_PARSE ('SQL Server 2012' AS decimal) AS MyDecimal SELECT TRY_PARSE ('ABC' AS float) AS MyFloat ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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