maropu commented on a change in pull request #31781:
URL: https://github.com/apache/spark/pull/31781#discussion_r589856805
##########
File path: docs/sql-ref-ansi-compliance.md
##########
@@ -72,16 +72,23 @@ The type conversion of Spark ANSI mode follows the syntax
rules of section 6.13
| Source\Target | Numeric | String | Date | Timestamp | Interval | Boolean |
Binary | Array | Map | Struct |
|-----------|---------|--------|------|-----------|----------|---------|--------|-------|-----|--------|
-| Numeric | Y | Y | N | N | N | Y | N
| N | N | N |
-| String | Y | Y | Y | Y | Y | Y | Y
| N | N | N |
+| Numeric | <span style="color:red">Y</span> | Y | N | N | N
| Y | N | N | N | N |
+| String | <span style="color:red">Y</span> | Y | <span
style="color:red">Y</span> | <span style="color:red">Y</span> | <span
style="color:red">Y</span> | <span style="color:red">Y</span> | Y | N | N
| N |
| Date | N | Y | Y | Y | N | N | N
| N | N | N |
| Timestamp | N | Y | Y | Y | N | N | N
| N | N | N |
| Interval | N | Y | N | N | Y | N | N
| N | N | N |
| Boolean | Y | Y | N | N | N | Y | N
| N | N | N |
-| Binary | Y | N | N | N | N | N | Y
| N | N | N |
-| Array | N | N | N | N | N | N | N
| Y | N | N |
-| Map | N | N | N | N | N | N | N
| N | Y | N |
-| Struct | N | N | N | N | N | N | N
| N | N | Y |
+| Binary | N | Y | N | N | N | N | Y
| N | N | N |
+| Array | N | N | N | N | N | N | N
| <span style="color:red">Y</span> | N | N |
+| Map | N | N | N | N | N | N | N
| N | <span style="color:red">Y</span> | N |
+| Struct | N | N | N | N | N | N | N
| N | N | <span style="color:red">Y</span> |
+
+In the table above, all the `CAST`s that can cause runtime exceptions are
marked as red <span style="color:red">Y</span>:
+* CAST(Numeric AS Numeric): raise a overflow exception if the value is out of
the target data type's range.
Review comment:
`a overflow` -> `an overflow`?
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