It is expected that most ODBC 3.8 (and later) drivers will implement this function. If a driver does not, a call to **SQLCancelHandle** with a connection handle in the *Handle* parameter will return SQL_ERROR with a SQLSTATE of IM001 and message 'Driver does not support this function'' A call to **SQLCancelHandle** with a statement handle as the *Handle* parameter will be mapped to a call to **SQLCancel** by the Driver Manager and can be processed if the driver implements **SQLCancel**. An application can use **SQLGetFunctions** to determine if a driver supports **SQLCancelHandle**.
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