velvia opened a new pull request #567:
URL: https://github.com/apache/arrow-datafusion/pull/567
# Which issue does this PR close?
Closes #355 .
# Rationale for this change
This PR implements the timestamp functions above in #355, basically
extending the following capabilities for all Timestamp types (specifically for
Millis, micros, and seconds) via the above named functions:
- Ability to convert timestamp strings to Timestamp type
- Ability to cast Int64 numeric arrays into equivalent Timestamp types
# What changes are included in this PR?
Pretty straightforward additions to `functions.rs`, `datetime_expressions`
etc.
What is NOT included so far but could be depending on discussion:
- Not sure where to add documentation for these functions
- It might be useful to users to be able to cast different Timestamp types
into others, for example, Timestamp-Nanos to Timestamp-Millis, and that would
be straightforward to add as well.
# Are there any user-facing changes?
Three new user-facing SQL functions.
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