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Update docs/connect/odbc/windows/release-notes-odbc-sql-server-windows.md
Co-authored-by: David Engel <dengel1012@gmail.com>
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docs/connect/odbc/windows/release-notes-odbc-sql-server-windows.md

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@@ -33,12 +33,16 @@ For the ARM64 driver: [Chinese (Simplified)](https://go.microsoft.com/fwlink/?li
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| ConcatNullYieldsNull property | Added support for ConcatNullYieldsNull property as both a connection string property and a registry key option. |
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| New distribution supported | Added x86 support on Windows ARM64. |
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### Known issues
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#### bcp_bind terminator issue
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When we use ‘terminator’ as the separator in bcp_bind for strings, two consecutive terminators in data can mean either NULL value or empty string. ODBC doesn’t have a way to distinguish between empty strings vs null strings.
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- Prior to 18.6.1.1 release, ODBC used to interpret consecutive terminators (0-length data) as empty strings.
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- In 18.6.1.1 release, a change was made to interpret such 0-length data as a NULL value instead of empty string
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In the next ODBC release, we will roll back this change so that we have pre-18.6.1.1 behaviour
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### Known issues in 18.6.1.1
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#### Terminator issue in bcp_bind
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When a "terminator" is used as the separator in `bcp_bind` for strings, two consecutive terminators in data can mean either a NULL value or an empty string. The ODBC driver doesn’t have a way to distinguish between empty strings and null strings.
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- Before the 18.6.1.1 release, the ODBC driver interpreted consecutive terminators (zero-length data) as empty strings.
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- In the 18.6.1.1 release, a change was made to interpret zero-length data as a NULL value instead of an empty string.
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This change will be reverted to pre-18.6.1.1 behavior in a future release.
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## Previous Releases
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