SQL: make date format functions more strict #112140
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luigidellaquila
commented
Aug 23, 2024
| .build(), | ||
| new Builder().pattern("%u").javaFormat(t -> String.format(Locale.ROOT, "%02d", t.get(WeekFields.ISO.weekOfYear()))).build(), | ||
| new Builder().pattern("%u") | ||
| .javaFormat(t -> String.format(Locale.ENGLISH, "%02d", t.get(WeekFields.of(DayOfWeek.MONDAY, 4).weekOfYear()))) |
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This is exactly how MySQL spec defines %u
luigidellaquila
commented
Aug 23, 2024
| .javaFormat(t -> String.format(Locale.ENGLISH, "%02d", t.get(WeekFields.of(DayOfWeek.SUNDAY, 7).weekOfWeekBasedYear()))) | ||
| .build(), | ||
| new Builder().pattern("%v") | ||
| .javaFormat(t -> String.format(Locale.ENGLISH, "%02d", t.get(WeekFields.of(DayOfWeek.MONDAY, 4).weekOfWeekBasedYear()))) |
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This is exactly how MySQL spec defines %v
elasticsearchmachine
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Pinging @elastic/es-analytical-engine (Team:Analytics) |
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Wait for #112196 before merging |
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@elasticmachine update branch |
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@luigidellaquila Is it ok to backport this to 8.15 and 7.17? |
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@thecoop For 8.15 I don't see any problems. |
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I can take care of it tomorrow |
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Backport #112140 to 8.15 Co-authored-by: Luigi Dell'Aquila <[email protected]>
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Switching to
CLDRlocale provider (see #110222) exposed some problems related to date conversion functions.In particular, these functions are defined to mimic MySQL and PostgreSQL behavior, and tests that compare results with the corresponding queries in MySQL and PostgreSQL show a slightly different behavior with CLDR, eg.
Moninstead ofMondaywith the ROOT locale;This change makes the calculation more strict by
The problem is not present with COMPAT locale provider, the intention of this change is to fix failures introduced by #110222, but I'm doing this as a separate PR to make sure that the new implementation is also good with COMPAT and we are not introducing regressions (ie. that it works fine with both
COMPATandCLDR)