On 9/30/17 15:28, Tom Lane wrote:
> This suggests to me that arguing about canonicalization is moot so
> far as avoiding reindexing goes: if you change ICU library versions,
> you're screwed and will have to jump through all the reindexing hoops,
> no matter what we do or don't do.

One reason for that is that the collation version also encodes things
like if the internal method for computing sort keys changes.

Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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