feat(spark): implement Spark date_diff function
#19845
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Jefffrey
approved these changes
Jan 16, 2026
martin-g
reviewed
Jan 16, 2026
| Ok(ExprSimplifyResult::Simplified(binary_expr( | ||
| end.cast_to(&DataType::Int32, info.schema())?, | ||
| Operator::Minus, | ||
| start.cast_to(&DataType::Int32, info.schema())?, |
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What if the argument data type is Date64 ? The signature allows it.
Date32 keeps the seconds since epoch, but Date64 keeps the milliseconds since epoch.
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oh good catch ! updated and added tests for it
…pes including string and timestamp
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Which issue does this PR close?
datafusion-sparkSpark Compatible Functions #15914Rationale for this change
Add support for spark https://spark.apache.org/docs/latest/api/sql/index.html#date_diff function
What changes are included in this PR?
Are these changes tested?
yes in SLT
Are there any user-facing changes?
yes