chunweilei commented on a change in pull request #2224:
URL: https://github.com/apache/calcite/pull/2224#discussion_r508171035
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File path: core/src/main/java/org/apache/calcite/plan/RelOptUtil.java
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@@ -2199,13 +2199,49 @@ public static boolean equal(
RelDataType type2,
Litmus litmus) {
if (!areRowTypesEqual(type1, type2, false)) {
- return litmus.fail("Type mismatch:\n{}:\n{}\n{}:\n{}",
+ return litmus.fail("Type mismatch:\n{}:\n{}\n{}:\n{}\ndifference:\n{}",
desc1, type1.getFullTypeString(),
- desc2, type2.getFullTypeString());
+ desc2, type2.getFullTypeString(),
+ getFullTypeDifferenceString(type1, type2));
Review comment:
Sometimes users want to know both what the source type or the target
type is and their difference.
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