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Using Triggers for Detective Work

By Tom Brown,

I used this trigger instead of a trace to identify how and where a column was being truncated in an essential table. The error never happened on test systems, only ever on the production server.

The trigger shows how to log changes only when a certain column is updated.

The data logged enabled me to locate the source of the error, and once that was corrected, both trigger and temporary table can be dropped.

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