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Replace all NULL values in a table

324080Feb 1 2011 — edited Feb 2 2011
What is the quickest way to replace all NULL values in a table with >80M rows and 20+ columns with NULL values?

Is it UPDATE SET WHERE IS NULL on a column-by-column basis, or read in each row and update the fields that are NULL.

Any advice and sample code will be greatly appreciated.

TIA.
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Locked on Mar 2 2011
Added on Feb 1 2011
#11g, #sql
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