Add a planner support function for numeric generate_series().
This allows the planner to estimate the number of rows returned by
generate_series(numeric, numeric[, numeric]), when the input values
can be estimated at plan time.
Song Jinzhou, reviewed by Dean Rasheed and David Rowley.
Discussion: https://postgr.es/m/tencent_F43E7F4DD50EF5986D1051DE8DE547910206%40qq.com
Discussion: https://postgr.es/m/tencent_1F6D5B9A1545E02FD7D0EE508DFD056DE50A%40qq.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/97173536ed4b1c29dce0dc4119db136e142f60a2
Modified Files
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src/backend/utils/adt/numeric.c | 121 +++++++++++++++++++++++++++
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_proc.dat | 9 +-
src/test/regress/expected/misc_functions.out | 65 ++++++++++++++
src/test/regress/sql/misc_functions.sql | 38 +++++++++
5 files changed, 232 insertions(+), 3 deletions(-)
