laurentgo commented on a change in pull request #1311: CALCITE-3187: Make
decimal type inference overridable.
URL: https://github.com/apache/calcite/pull/1311#discussion_r301869988
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File path:
core/src/main/java/org/apache/calcite/rel/type/RelDataTypeFactory.java
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@@ -308,6 +308,29 @@ RelDataType createDecimalQuotient(
@SuppressWarnings("deprecation")
FieldInfoBuilder builder();
+ /**
+ * Infers the return type of a decimal addition. Decimal addition involves
+ * at least one decimal operand and requires both operands to have exact
+ * numeric types.
+ *
+ * @param type1 type of the first operand
+ * @param type2 type of the second operand
+ * @return the result type for a decimal addition, or null if decimal
+ * addition should not be applied to the operands.
+ */
+ RelDataType createDecimalAddition(RelDataType type1, RelDataType type2);
Review comment:
should it be a default method to preserve source compatibility?
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