BUG: Invalid Style Parameter in CONVERT Function May Cause Access Violation (269884)
The information in this article applies to:
This article was previously published under Q269884
BUG #: 57813 (SQLBUG_70)
SYMPTOMS
When an invalid style parameter value is used in a CONVERT function, SQL Server may generate an access violation (AV).
STATUS
Microsoft has confirmed this to be a problem in SQL Server 7.0.
MORE INFORMATION
The CONVERT function has the following syntax:
CONVERT (data_type[(length)], expression [, style])
For example, to return an date in 'mm/dd/yyyy' format, use a value of 101 for the style parameter:
select convert(varchar(10), HireDate, 101) from employees
If you run the following code in Query Analyzer:
use northwind
go
select convert(varchar(10), HireDate, 'mm/dd/yyyy') from employees
the following error is generated
ODBC: Msg 0, Level 19, State 1
SqlDumpExceptionHandler: Process 12 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.
and the SQL Server errorlog may contain entries that resemble the following:
2001-05-04 09:22:50.84 spid7 Using 'sqlimage.dll' version '4.0.5'
Stack Dump being sent to C:\MSSQL7\log\SQL00002.dmp
2001-05-04 09:22:56.03 spid7 Error: 0, Severity: 19, State: 0
2001-05-04 09:22:56.03 spid7 SqlDumpExceptionHandler: Process 7 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.
.
*******************************************************************************
*
* BEGIN STACK DUMP:
* 05/04/01 09:22:56 spid 7
*
* Exception Address = 00350030
* Exception Code = c0000005 E
* Access Violation occurred writing address 00000001
* Input Buffer 132 bytes -
* s e l e c t c o n v e r t ( v a r c h a r(10) , HireDate ,
* ' m m / d d / y y y y ' ) f r o m e m p l o y e e s
*******************************************************************************
-------------------------------------------------------------------------------
Short Stack Dump
0x00350030 Module(UNKNOWN+0)
-------------------------------------------------------------------------------
2001-05-04 09:22:56.63 spid7 Error: 0, Severity: 19, State: 0
2001-05-04 09:22:56.63 spid7 language_exec: Process 7 generated an access violation. SQL Server is terminating this process.
For more information about the correct values to use with the style parameter, see "CAST and CONVERT (T-SQL)" in SQL Server Books Online.
Modification Type: | Major | Last Reviewed: | 9/4/2002 |
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Keywords: | kbbug KB269884 |
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