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Re^3: DBI::ODBC Stored Procedure execution

by john_oshea (Priest)
on Jan 28, 2008 at 13:20 UTC ( #664677=note: print w/ replies, xml ) Need Help??


in reply to Re^2: DBI::ODBC Stored Procedure execution
in thread DBI::ODBC Stored Procedure execution

As far as I'm aware, it's specified in the SQL standard - the following is lifted from Joe Celko's "SQL For Smarties" book (recommended, btw):

In SQL, character strings are printable characters enclosed in single quotation marks. ... Double quotations marks are reserved for column names that have embedded spaces or that are also SQL-reserved words.

Without the quotes, you're passing a number a bit larger than 20 million to the stored procedure (which is left unconverted, even though it looks like a date). With the quotes, SQL Server is clever enough to try to convert the string to a date, so it does what you mean. You can, if you want, explicitly control how the conversion gets done using CAST: http://msdn2.microsoft.com/en-us/library/ms141704.aspx.

Hope that helps.


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