yaooqinn commented on code in PR #45666:
URL: https://github.com/apache/spark/pull/45666#discussion_r1536005042
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sql/core/src/main/scala/org/apache/spark/sql/jdbc/MySQLDialect.scala:
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@@ -123,6 +123,8 @@ private case class MySQLDialect() extends JdbcDialect with
SQLConfHelper {
// Signed values in [-8388608, 8388607] and unsigned values in [0,
16777215],
// both of them fit IntegerType
Some(IntegerType)
+ case Types.REAL | Types.FLOAT =>
+ if (md.build().getBoolean("isSigned")) Some(FloatType) else
Some(DoubleType)
Review Comment:
> do you think we need to warn from our side
Oh, I missed this. This won't be necessary, it looks better to be warned
when users use DDLs against MySQL DB. In this part, we actually act as a reader
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