String or Binary Data and Associated Bug

Brent Ozar looks at the “String or binary data would be truncated” improvement:

Don’t leave this trace flag enabled.
There’s at least one bug with it as of today on SQL Server 2017 CU13: table variables will throw errors saying their contents are being truncated even when no data is going into them. Andrew Pruski reports:

Special shout out to three of my co-workers on finding that issue. I had nothing to do with it but will take credit nonetheless.

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