问题
I am trying to export data from PostgreSQL to MSSQL Server.
Currently, I am exploring the SQL Server Import and Export Wizard.
I have installed the native postgres driver and got the .Net Data Provider for PostgreSQL. Everything seemed fine until I tried to use it.
I got the following: Cannot get the supported data types from the database connection
Is this a driver problem or am I missing something?
Update:
Like @Panagiotis Kanavos suggested I have installed OLEDB driver
There seems to be a problem with it.
I fill the required data, Test the connection, it says that it is successfully established, but when I click Next to continue with the Wizard I get:
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Cannot get string literals from the database connection "Provider=PostgreSQL OLE DB Provider;User ID=postgres;Data Source=localhost;Location=MyDb;Extended Properties=". (SQL Server Import and Export Wizard)
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Object reference not set to an instance of an object. (DTSWizard)
Here are some screenshots:
After clicking Next:
There isn't any useful information about this problem. If anyone has any idea?
回答1:
I was successful using the ODBC drivers (64 bit). 32bit drivers had some memory issues on large tables. See this post: Migrating from PostgreSQL to SQL Server 2008
来源：https://stackoverflow.com/questions/43975322/sql-server-import-and-export-wizard-and-postgresql