Github user bomeng commented on a diff in the pull request: https://github.com/apache/spark/pull/12252#discussion_r59819746 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala --- @@ -246,13 +247,23 @@ object JdbcUtils extends Logging { } /** + * The utility to add quote to the column name based on its dialect + * @param dialect the JDBC dialect + * @param columnName the input column name + * @return the quoted column name + */ + private def quoteColumnName(dialect: JdbcDialect, columnName: String): String = { + dialect.quoteIdentifier(columnName) + } + + /** * Compute the schema string for this RDD. */ - def schemaString(df: DataFrame, url: String): String = { + def schemaString(dialect: JdbcDialect, df: DataFrame, url: String): String = { val sb = new StringBuilder() val dialect = JdbcDialects.get(url) --- End diff -- The purpose to pass in dialect is to get proper quote for columns based on its data source. Any suggestion?
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