[Coral-Trino] use 'TRY_CAST' instead of 'CAST' #544
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@wmoustafa Could you help review it? |
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What changes are proposed in this pull request, and why are they necessary?
Hive/Spark CAST is equivalent to Trino TRY_CAST. If CAST fails, a query using Hive/Spark will return null, while a query using Trino will throw error. So I think should use 'TRY_CAST' instead of 'CAST'.
select cast('a' as int) return null
select cast('a' as int) throw error like "Cannot cast 'a' to INT"
select try_cast('a' as int) return null
How was this patch tested?
Modified unit tests.