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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-01-12 22:35:29 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-01-12 22:35:29 +0000 |
| commit | d4ce5a4f4c3516e88fa34c53bcc7313db90a3c08 (patch) | |
| tree | 4c6b53e1c1e0989a9f45fe42ab6f29ffac019c03 /doc/src/sgml/ref/pgtksh.sgml | |
| parent | d51260aa9d36653f4d63e6df133ddff8380f61b2 (diff) | |
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.
Diffstat (limited to 'doc/src/sgml/ref/pgtksh.sgml')
0 files changed, 0 insertions, 0 deletions