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31 Mar 2003
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Starting transactions in Stored Procedures and User Defined Functions
A brief explanation why you cannot start transactions in stored procedures and user defined functions.
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Ben Matterson
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FAQ
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28 Aug 2001
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Managing a birthday calendar with InterBase
User-defined functions are the key to remembering everyone's natal anniversary. By Marco Hemmes.
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Marco Hemmes
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Contributed Article
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26 Sep 2000
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Writing Clean and Safe UDFs in Delphi
This article assumes the reader understands Delphi well enough to know how to create a DLL--We will demonstrate how to create UDFs, not DLLs.
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Borland Staff
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TI
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24 Jul 2000
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Passing and Returning Dates to a Delphi-created UDF
A Protection Exception or erroneous results may occur if special precautions are not taken
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Borland Staff
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FAQ
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24 Jul 2000
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How to use the udflib.c supplied in the IB V4.x examples directory.
How to compile the udf example shipped with the 4.x kits.
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Borland Staff
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FAQ
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24 Jul 2000
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Rounding numerical values in a stored procedure
A UDF is the best way to round a numeric value to an integer
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Borland Staff
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FAQ
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24 Jul 2000
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SCH_validate errors appear in interbase.log file
SCH_validate errors are internal server errors that are related to InterBase's internal scheduler.
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Borland Staff
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FAQ
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24 Jul 2000
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Into which directory do I put UDF DLLs (Windows platforms)
InterBase uses the Win32 API function: LoadLibrary to load a UDF.
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Borland Staff
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FAQ
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24 Jul 2000
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Compiling UDFs on Unix
Example for compiling a UDF under Solaris
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Borland Staff
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FAQ
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24 Jul 2000
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Information on how to use the dow() UDF
Getting the error .."error 171: function dow() could not be matched..
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Borland Staff
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FAQ
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24 Jul 2000
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Diagnostic Steps to Try When InterBase Will Not Recognize a UDF
5 different potental reasons for this error
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Borland Staff
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FAQ
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24 Jul 2000
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Is it possible to access data from the database within a UDF?
Although it is possible to access data from a UDF, it is not recommended.
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Borland Staff
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FAQ
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24 Jul 2000
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Can UDF's Add Results From More Than One Record?
UDF cannot remember the answer from a previous record
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Borland Staff
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FAQ
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24 Jul 2000
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Where to find information on building a shared library on SCO 5
A UDF on any platform is just a shared library.
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Borland Staff
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FAQ
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24 Jul 2000
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Returning thread-safe values from an UDF
There are three ways to manage thread-local storage when returning values from a UDF.
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Borland Staff
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FAQ
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24 Jul 2000
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Creating UDFs in Delphi
This paper will provide step by step instructions for creating a UDF in Delphi.
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Borland Staff
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FAQ
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24 Jul 2000
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Defining maximum size of a string argument passed to a UDF
You must account for the null character at the end of the string.
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Borland Staff
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FAQ
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24 Jul 2000
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Declaring InterBase UDF's in the Database Desktop
One external function may be declared at a time in the SQL editor
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Borland Staff
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FAQ
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24 Jul 2000
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Trying to group by a UDF return value
Grouping is only allowed field values stored in a table
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Borland Staff
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FAQ
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24 Jul 2000
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BLR errors when running UDF's from ib_udf.dll
IB_UDF.DLL relies on IB_UTIL.DLL
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Borland Staff
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FAQ
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