[feature](timestamp_ns) Support casts and functions - #66761

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jacktengg wants to merge 24 commits into

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jacktengg:timestamp_ns-split-commit1-cast-and-functions

Commits on Aug 19, 2026

[feature](timestamp_ns) Add basic TIMESTAMP_NS type support
jacktengg
committed
056e2af
[feature](timestamp_ns) Support casts and date-time functions
jacktengg
committed
2fecd0e
[fix](timestamp_ns) Complete TIMESTAMP_NS execution support
jacktengg
committed
fcc57ff
[fix](be) Restore array range return type inference
jacktengg
committed
dc27cce
[fix](fe) Validate cast types before constant folding
jacktengg
committed
6a81706
[feature](timestamp_ns) Support nanosecond time formatting
jacktengg
committed
e3275c6
[feature](datetime) Support nanosecond formatting for DATETIMEV2 and TIMEV2
jacktengg
committed
5070cc4
Many fixes
jacktengg
committed
cb1b493
[fix](build) Fix TIMESTAMP_NS build hygiene
jacktengg
committed
8f0b515

Commits on Aug 20, 2026

Commits on Aug 21, 2026

[fix](regression) Use explicit casts in timestamp tests
jacktengg
committed
54197f8
[fix](timestamp_ns) Fix reviewed timestamp semantics
jacktengg
committed
870686e
[fix](timestamp_ns) Fix year rounding across leap years
jacktengg
committed
45c52ee
[test](timestamp_ns) Cover decimal digits metadata
jacktengg
committed
d55048a
[fix](be) Add TIMESTAMP_NS JNI VectorTable transport
jacktengg
committed
b8943de
[test](timestamp_ns) Cover mixed DATETIMEV2 joins
jacktengg
committed
7839492
[fix](fe) Materialize exact timestamp literal casts
jacktengg
committed
5ab856b
[fix](be) Fix TIMESTAMP_NS JNI column deserialization
jacktengg
committed
0bfc72d
[test](timestamp_ns) Expand design contract coverage
jacktengg
committed
719014d
[fix](timestamp_ns) Preserve zoned nanosecond semantics
jacktengg
committed
809bf62