The Application Development Experiences of an Enterprise Engineer

Oracle String SQL Query using a DateTime from C#

Posted by bsstahl on 2009-03-07 and Filed Under: development 


The following statement builds a C# string containing an Oracle SQL query that uses a DateTime specified in the .NET code.  It uses the Oracle TO_DATE function to convert the string date to an oracle date object and specifies the format of the string date for both the C# output and the Oracle input. Using this statement, there can never be a date format mismatch since the same format is specified at both ends.

string sql = string.Format("select \* from MyDB.MyTable t where t.MyDate >
     TO\_DATE('{0:MM/dd/yyyy hh:mm}', 'MM/dd/yyyy HH24:mi')", DateTime.Now);

I have found myself using this type of statement fairly often to create tools that help me do my job.  For what it's worth, I wouldn't put this type of code in production since you rarely want to execute a query from a string in a production environment.

Tags: csharp oracle sql datetime dotnet 

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Barry S. StahlBarry S. Stahl (he/him/his) - Barry is a .NET Software Engineer who has been creating business solutions for enterprise customers since the mid 1980s. Barry is also an Election Integrity Activist, baseball and hockey fan, husband of one genius and father of another, and a 40 year resident of Phoenix Arizona USA. When Barry is not traveling around the world to speak at Conferences, Code Camps and User Groups or to participate in GiveCamp events, he spends his days as a Solution Architect for Carvana in Tempe AZ and his nights thinking about the next AZGiveCamp event where software creators come together to build websites and apps for some great non-profit organizations.

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