beliefer commented on code in PR #46832:
URL: https://github.com/apache/spark/pull/46832#discussion_r1625587178
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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -4603,6 +4603,14 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val LEGACY_NO_CHAR_PADDING_IN_PREDICATE =
buildConf("spark.sql.legacy.noCharPaddingInPredicate")
Review Comment:
`However, there is a bug in Spark that we always pad the string literal when
comparing CHAR type and STRING literals, which assumes the CHAR type columns
are always padded, either on the write side or read side.`
I'm a bit confused.
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