iRakson commented on a change in pull request #26933: [SPARK-30292][SQL]Throw
Exception when invalid string is cast to numeric type in ANSI mode
URL: https://github.com/apache/spark/pull/26933#discussion_r362757215
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
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@@ -1133,7 +1180,11 @@ abstract class CastBase extends UnaryExpression with
TimeZoneAwareExpression wit
Decimal $tmp = Decimal.apply(new
java.math.BigDecimal($c.toString().trim()));
${changePrecision(tmp, target, evPrim, evNull, canNullSafeCast)}
} catch (java.lang.NumberFormatException e) {
- $evNull = true;
+ if ($ansiEnabled) {
Review comment:
`NumberFormatException` is thrown when we are converting to BigDecimal. So
we can update the error message in `changePrecision` but it will be similar to
what we are doing here. First we need to catch the exception and process
according to state of `ansi` flag.
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