wangyum commented on pull request #1771:
URL: https://github.com/apache/hive/pull/1771#issuecomment-744470603
Type | Disadvantage
-- | --
Decimal | Can not correct compare if the string is a very large number that
exceeds the max decimal precision. E.g.
`cast('1234567890123456789012345678901234567890' as decimal(38, 0)) > cast(1
as decimal(18, 0))`
String | Can not correct compare if trailing zeros . E.g. `'1.10' = cast(1.1
as string)`
Double | Can not correct compare if exceeds double precision. E.g.
`cast('1234567890123456789012345678901234567890' as double) <
cast('1234567890123456789012345678901234567891' as double)`
How about throwing exceptions like PostgreSQL?
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