1d0f54951e
### What changes were proposed in this pull request? https://github.com/apache/spark/pull/26412 introduced a behavior change that `date_add`/`date_sub` functions can't accept string and double values in the second parameter. This is reasonable as it's error-prone to cast string/double to int at runtime. However, using string literals as function arguments is very common in SQL databases. To avoid breaking valid use cases that the string literal is indeed an integer, this PR proposes to add ansi_cast for string literal in date_add/date_sub functions. If the string value is not a valid integer, we fail at query compiling time because of constant folding. ### Why are the changes needed? avoid breaking changes ### Does this PR introduce any user-facing change? Yes, now 3.0 can run `date_add('2011-11-11', '1')` like 2.4 ### How was this patch tested? new tests. Closes #27965 from cloud-fan/string. Authored-by: Wenchen Fan <wenchen@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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