troubleshooting Question

Explicit conversion from data type bigint to date is not allowed.

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dbaSQLFlag for United States of America asked on
Microsoft SQL ServerMicrosoft SQL Server 2005Microsoft SQL Server 2008
18 Comments2 Solutions18887 ViewsLast Modified:
ColumnA is BIGINT, contains values like this:  20040927, 19990729, 19990722
ColumnB is DATE, it is NULL.

The table is loaded from a csv, I just need to update columnB from columnA, after the file is loaded.  

I'm just trying a basic CAST in the update, and I am receiving the error in my title line.

UPDATE tablename
SET ColumnB = CAST(ColumnA AS DATE)
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