zhuqi-lucas commented on code in PR #14572:
URL: https://github.com/apache/datafusion/pull/14572#discussion_r1951115943
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datafusion/common/src/dfschema.rs:
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@@ -1028,20 +1028,48 @@ impl SchemaExt for Schema {
})
}
- fn logically_equivalent_names_and_types(&self, other: &Self) -> bool {
+ // There are three cases we need to check
+ // 1. The len of the schema of the plan and the schema of the table should
be the same
+ // 2. The nullable flag of the schema of the plan and the schema of the
table should be the same
+ // 3. The datatype of the schema of the plan and the schema of the table
should be the same
+ fn logically_equivalent_names_and_types(&self, other: &Self) -> Result<(),
String> {
Review Comment:
Originally i use Result < bool >, but i want to get three different error
messages for different case, so i change to Result<(), String>.
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