HyukjinKwon commented on a change in pull request #32723:
URL: https://github.com/apache/spark/pull/32723#discussion_r643577724



##########
File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala
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@@ -301,23 +306,22 @@ class DataFrameReader private[sql](sparkSession: 
SparkSession) extends Logging {
    * Don't create too many partitions in parallel on a large cluster; 
otherwise Spark might crash
    * your external database systems.
    *
-   * @param url JDBC database url of the form `jdbc:subprotocol:subname`.
+   * You can find the JDBC-specific options for reading table via JDBC in

Review comment:
       Can we change: "JDBC-specific options for reading table" -> 
"JDBC-specific option and parameter documentation for reading tables"?

##########
File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala
##########
@@ -282,6 +282,10 @@ class DataFrameReader private[sql](sparkSession: 
SparkSession) extends Logging {
    * Construct a `DataFrame` representing the database table accessible via 
JDBC URL
    * url named table and connection properties.
    *
+   * You can find the JDBC-specific options for reading table via JDBC in

Review comment:
       reading a table or reading tables




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