hoperunChen commented on code in PR #4150:
URL: https://github.com/apache/calcite/pull/4150#discussion_r1919448067
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linq4j/src/main/java/org/apache/calcite/linq4j/tree/Primitive.java:
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@@ -427,7 +427,7 @@ static BigDecimal checkOverflow(BigDecimal value, int
precision, int scale,
/** Called from BuiltInMethod.CHAR_DECIMAL_CAST_ROUNDING_MODE */
public static @Nullable Object charToDecimalCast(
@Nullable String value, int precision, int scale, RoundingMode
roundingMode) {
- if (value == null) {
+ if (value == null || value.isEmpty()) {
Review Comment:
Of course, testing can be done. My test case is attached in the comments on
the [Jira ticket](https://issues.apache.org/jira/browse/CALCITE-6789); you can
use my example to try it out.
If it’s truly impossible to modify the method, could you provide me with a
solution to my issue? The CSV file is not controlled by the program, so I
cannot change the values of the titles.
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