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get_attavgwidth_hook

A hook for controlling an algorithm predicting the average width of column entries

get_attavgwidth_hook is a hook for controlling an algorithm for predicting the average width of entries in the column.

get_attavgwidth_hook was added in PostgreSQL 8.4.

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PostgreSQL 8.4
- added (commit 7b7df9f0)

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Unofficial documentation: get_attavgwidth_hook

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