Big impact when set property type in-properly

发布时间：2020-12-12 15:08:49 所属栏目：MsSql教程来源：网络整理

导读：In sqlserver DB,for the string,we have types: NVARCHR,VARCHAR. In mapping class,if you use default set the type to "string" but the column type is varchar in DB,that will cause a transfer in DB side when searching comparing,if unfortunatel

In sqlserver DB,for the string,we have types: NVARCHR,VARCHAR.

In mapping class,if you use default set the type to "string" but the column type is varchar in DB,that will cause a transfer in DB side when searching comparing,if unfortunately you have a huge data in the table,the DB transer will be more huge,it will deadblock you DB.

To solve it if in DB its type is VARCHAR,in Mapping class should use:

?? [Property(Type = "AnsiString")] instead.

（编辑：李大同）

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