yanlin-Lynn commented on issue #1540: [CALCITE-3433] EQUALS operator between date/timestamp types returns false if the type is nullable URL: https://github.com/apache/calcite/pull/1540#issuecomment-547240931 There is already a `eq` function in `SqlFunctions`. How about call it when it's non primitive types. https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java#L619 For this case, the generated code may like this ``` public Object current() { final Object[] current = (Object[]) inputEnumerator.current(); final Long inp0_ = (Long) current[0]; final Long inp1_ = (Long) current[1]; return new Object[] { inp0_ == null || inp1_ == null ? (Boolean) null : Boolean.valueOf(org.apache.calcite.runtime.SqlFunctions.eq(inp0_, inp1_)), inp0_ == null || inp1_ == null ? (Boolean) null : Boolean.valueOf(org.apache.calcite.runtime.SqlFunctions.ne(inp0_, inp1_))}; } }; ```
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