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LAST_DAY function and other changes #3761

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merged 5 commits into from Mar 20, 2023
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@katzyn katzyn commented Mar 19, 2023

  1. An implementation of Oracle/MySQL-style LAST_DAY function. DB2 and HSQLDB also have a similar function with some differences in data type of result.
  2. SYSDATE now rounds fractional seconds down for better compatibility with Oracle (see Oracle DATE type: milliseconds (second fractions) rounded in H2 but truncated in Oracle #3705).
  3. Static caches of TIME values for every hour (TIME '00:00:00', TIME '01:00:00', …) and TINYINT values are introduced. Their classes are initialized by regular JVMs only when these data types are actually used by application, it means this small amount of memory will not be wasted when these data types aren't used.

@katzyn katzyn merged commit d8af652 into h2database:master Mar 20, 2023
@katzyn katzyn deleted the datetime branch March 20, 2023 10:01
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