chore: backports PR #16730 and PR #16938 to release/v1.2.636-rc6 #16960
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databendlabs#16730) * feat: implement is_not_null selectivity based on null count in stats * fix test
* chore(planner): improve cardinality estimation * chore(planner): improve histogram cardinality estimation * chore(planner): improve join cardinality * chore(test): update sqllogictest * chore(test): update sqllogictest * chore(code): refine code * chore(test): update sqllogictest * chore(test): test ci tpch * chore(code): fix typos * chore(test): remove accurate_his test * chore(test): fix sqllogictest * chore(query): fix sub overflow * chore(planner): refine scan histogram * chore(test): update sqllogictest * chore(test): update sqllogictest
* ci: fix flaky test databendlabs#16935 * ci: update error format of Bendsql.
* feat: filter null value before join * fix lint * add annotations and process possible crash * dedup filters and fix tests (also need to fix native explain test) * fix test * support semi join * fix test for semi join * adjust threshold and enable only distribution
* fix(query): support subquery in pivot * add pivot and unpivot sqllogictests, fix unit-test * code format
This reverts commit efcbac3.
…tabendlabs#16494) * fix: add extra bracket for and or * add task test
This reverts commit 49ea151.
fix(query): forbiden explain explain statement
* flaky test * fix * fix test
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Summary
backports
is_not_nullselectivity based on null count in stats #16730to release/v1.2.636-rc6.
replace PR #16951
Tests
Type of change
This change is