 Lei, HUANG
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c6b10bfbb9
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feat(function): add mergeable stddev_pop state functions (#8972)
* feat(function): add Welford stddev functions
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* test(function): cover merged Welford time windows
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* refactor(function): use stddev_pop SQL names
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* fix(function): make Welford arithmetic partition-stable
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* fix(function): reject invalid singleton Welford states
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* test(function): pin Welford state compatibility
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* refactor(function): remove unreachable variance clamp
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* fix(function): reject DISTINCT Welford aggregates
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
* test(compat): bound Welford downgrade targets
Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
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Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
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2026-08-31 14:15:33 +00:00 |
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