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Reuse parameter metadata when using Always Encrypted #195

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Suraiya-Hameed opened this issue Mar 13, 2017 · 1 comment
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Reuse parameter metadata when using Always Encrypted #195

Suraiya-Hameed opened this issue Mar 13, 2017 · 1 comment
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@xiangyushawn

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@Suraiya-Hameed
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If columnEncryptionSetting is enabled, mssql-jdbc driver calls sp_describe_parameter_encryption each time PreparedStatement is executed.

Below SQL profiler trace was generated when creating PreparedStatement and using it twice to execute.

Trace for mssql-jdbc:
alt tag

Trace for SqlClient:
image

Calling the stored procedure just once and reusing the metadata will improve the drivers performance with Always Encrypted significantly.
@xiangyushawn xiangyushawn self-assigned this Mar 24, 2017
@xiangyushawn xiangyushawn mentioned this issue Mar 24, 2017
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@xiangyushawn xiangyushawn added the Waiting for Response Waiting for a reply from the original poster, or affiliated party label Mar 24, 2017
@Suraiya-Hameed
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@v-xiangs Thanks for the fix!

@Suraiya-Hameed Suraiya-Hameed removed the Waiting for Response Waiting for a reply from the original poster, or affiliated party label Mar 30, 2017
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@xiangyushawn @Suraiya-Hameed