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### What changes were proposed in this pull request? With the latest string to literal optimization https://github.com/apache/spark/pull/26256, some interval strings can not be cast when there are some spaces between signs and unit values. After state `PARSE_SIGN`, it directly goes to `PARSE_UNIT_VALUE` when takes a space character as the end. So when there are some white spaces come before the real unit value, it fails to parse, we should add a new state like `TRIM_VALUE` to trim all these spaces. How to re-produce, which aim the revisions since https://github.com/apache/spark/pull/26256 is merged ```sql select cast(v as interval) from values ('+ 1 second') t(v); select cast(v as interval) from values ('- 1 second') t(v); ``` ### Why are the changes needed? bug fix ### Does this PR introduce any user-facing change? no ### How was this patch tested? 1. ut 2. new benchmark test Closes #26449 from yaooqinn/SPARK-29605. Authored-by: Kent Yao <yaooqinn@hotmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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