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postgres/src/backend/utils/adt
Tom Lane d4ce5a4f4c Revise cost_qual_eval() to compute both startup (one-time) and per-tuple
costs for expression evaluation, not only per-tuple cost as before.
This extension is needed in order to deal realistically with hashed or
materialized sub-selects.
2003-01-12 22:35:29 +00:00
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