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PROP:AlwaysRebind sets or returns the toggle that controls whether the SQL Accelerator rebinds memory locations when a NULL state changes.

For all backends except MSSQL, PROP:AlwaysRebind defaults to 0 or False, so the SQL driver does not rebind memory locations when a NULL state changes. However, some SQL backends (including MSSQL) do not recheck the null state, so they must have the memory location rebound to force the change of null state. Setting PROP:AlwaysRebind to 1 or True tells the SQL Accelerator to do this extra binding.