[woblerr]

• Generate float8 arrays instead of int8 arrays for Cloudberry segment NDV statistics (kind 8) to preserve their original type and support fractional values.
• Cover integer and fractional NDV values in the unit test.
• Add an integration regression test for restoring fractional NDV statistics in the fifth slot.

Related to #65.

[talmacschen-arch]

LGTM

[MisterRaindrop]

Thanks @woblerr! This change is already on main: #139 included this commit and was squash-merged, so AnyValues() now uses float8 for STATISTIC_KIND_NDV_BY_SEGMENTS and the new integration test is in as well. Comparing this branch with main shows nothing left to merge, so I think this PR can be closed.

[tuhaihe]

Thanks @woblerr! This change is already on main: #139 included this commit and was squash-merged, so AnyValues() now uses float8 for STATISTIC_KIND_NDV_BY_SEGMENTS and the new integration test is in as well. Comparing this branch with main shows nothing left to merge, so I think this PR can be closed.

Yep. When I tried to rebase this pull request, it was closed automatically. I guess it was due to the reasons above. 🥹