uros-db commented on code in PR #45856:
URL: https://github.com/apache/spark/pull/45856#discussion_r1552941872
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sql/core/src/test/scala/org/apache/spark/sql/CollationRegexpExpressionsSuite.scala:
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@@ -165,15 +165,23 @@ class CollationRegexpExpressionsSuite
// Supported collations
val checks = Seq(
- CollationTestCase("ABC", "[B]", "UTF8_BINARY", Seq("A", "C"))
+ CollationTestCase("ABC", "[B]", "UTF8_BINARY", Seq("A", "C")),
+ CollationTestCase("ABC", "[b]", "UTF8_BINARY", Seq("ABC")),
+ CollationTestCase("ABC", "[b]", "UTF8_BINARY_LCASE", Seq("A", "C")),
+ CollationTestCase("AAA", "[a]", "UTF8_BINARY_LCASE", Seq("", "", "",
"")),
+ CollationTestCase("AAA", "[b]", "UTF8_BINARY_LCASE", Seq("AAA")),
+ CollationTestCase("aAbB", "[ab]", "UTF8_BINARY_LCASE", Seq("", "", "",
"", "")),
+ CollationTestCase("", "", "UTF8_BINARY_LCASE", Seq("")),
+ CollationTestCase("", "[a]", "UTF8_BINARY_LCASE", Seq("")),
+ CollationTestCase("xAxBxaxbx", "[AB]", "UTF8_BINARY_LCASE", Seq("x",
"x", "x", "x", "x")),
+ CollationTestCase("ABC", "[B]", "UNICODE", Seq("A", "C")),
+ CollationTestCase("ABC", "[b]", "UNICODE", Seq("ABC"))
)
checks.foreach(ct =>
checkEvaluation(prepareStringSplit(ct.s1, ct.s2, ct.collation),
ct.expectedResult)
Review Comment:
I think we should consider rewriting `prepareStringSplit` here, as it
doesn't make much sense to do:
`val splitByExpr = Literal.create(splitBy, StringType(collationId))`
considering that **collationAwareSplit** doesn't respect collation for this
parameter at all
furthermore, consider how casting makes sense in this instance, and whether
it's needed at all
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