pgsql: Teach planner how to estimate rows for timestamp generate_series
| От | David Rowley |
|---|---|
| Тема | pgsql: Teach planner how to estimate rows for timestamp generate_series |
| Дата | |
| Msg-id | E1sQwKe-000uBF-Pa@gemulon.postgresql.org обсуждение исходный текст |
| Ответы |
Re: pgsql: Teach planner how to estimate rows for timestamp generate_series
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| Список | pgsql-committers |
Teach planner how to estimate rows for timestamp generate_series This provides the planner with row estimates for generate_series(TIMESTAMP, TIMESTAMP, INTERVAL), generate_series(TIMESTAMPTZ, TIMESTAMPTZ, INTERVAL) and generate_series(TIMESTAMPTZ, TIMESTAMPTZ, INTERVAL, TEXT) when the input parameter values can be estimated during planning. Author: David Rowley Reviewed-by: jian he <jian.universality@gmail.com> Discussion: https://postgr.es/m/CAApHDvrBE%3D%2BASo_sGYmQJ3GvO8GPvX5yxXhRS%3Dt_ybd4odFkhQ%40mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/036bdcec9f9998a6e50711fadce69e482ff18f55 Modified Files -------------- src/backend/utils/adt/timestamp.c | 88 +++++++++++++++++++++ src/include/catalog/pg_proc.dat | 12 ++- src/test/regress/expected/misc_functions.out | 110 +++++++++++++++++++++++++++ src/test/regress/sql/misc_functions.sql | 84 ++++++++++++++++++++ 4 files changed, 291 insertions(+), 3 deletions(-)
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