mgaido91 commented on a change in pull request #23456: [SPARK-26538][SQL] Set
default precision and scale for elements of po…
URL: https://github.com/apache/spark/pull/23456#discussion_r245425442
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/PostgresDialect.scala
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@@ -60,7 +60,8 @@ private object PostgresDialect extends JdbcDialect {
case "bytea" => Some(BinaryType)
case "timestamp" | "timestamptz" | "time" | "timetz" => Some(TimestampType)
case "date" => Some(DateType)
- case "numeric" | "decimal" => Some(DecimalType.bounded(precision, scale))
+ case "numeric" | "decimal" if precision != 0 =>
Some(DecimalType.bounded(precision, scale))
Review comment:
what about
```
case "numeric" | "decimal" => if (precision > 0) {
Some(DecimalType.bounded(precision, scale))
} else {
// Here a small comment explaining when this can happen and why we do
this.
Some(DecimalType. SYSTEM_DEFAULT)
}
```
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