cloud-fan commented on a change in pull request #30297:
URL: https://github.com/apache/spark/pull/30297#discussion_r520549940
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
##########
@@ -2146,7 +2146,9 @@ object SQLConf {
.doc("When true, Spark tries to conform to the ANSI SQL specification: 1.
Spark will " +
"throw a runtime exception if an overflow occurs in any operation on
integral/decimal " +
"field. 2. Spark will forbid using the reserved keywords of ANSI SQL as
identifiers in " +
- "the SQL parser.")
+ "the SQL parser. 3. Spark will returns null for null input for function
`size`. " +
+ "4. Spark will throw ArrayIndexOutOfBoundsException if invalid indices "
+
Review comment:
We can merge 1 and 4: `1. Spark will throw an exception at runtime if
the inputs to a SQL operator/function are invalid, e.g. overflow in arithmetic
operations, out-of-range index when accessing array elements.`
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