org.apache.spark.sql.jdbc.MsSqlServerDialect.scala Maven / Gradle / Ivy
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* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.spark.sql.jdbc
import org.apache.spark.sql.types._
private object MsSqlServerDialect extends JdbcDialect {
override def canHandle(url: String): Boolean = url.startsWith("jdbc:sqlserver")
override def getCatalystType(
sqlType: Int, typeName: String, size: Int, md: MetadataBuilder): Option[DataType] = {
if (typeName.contains("datetimeoffset")) {
// String is recommend by Microsoft SQL Server for datetimeoffset types in non-MS clients
Option(StringType)
} else {
None
}
}
override def getJDBCType(dt: DataType): Option[JdbcType] = dt match {
case TimestampType => Some(JdbcType("DATETIME", java.sql.Types.TIMESTAMP))
case StringType => Some(JdbcType("NVARCHAR(MAX)", java.sql.Types.NVARCHAR))
case BooleanType => Some(JdbcType("BIT", java.sql.Types.BIT))
case _ => None
}
override def isCascadingTruncateTable(): Option[Boolean] = Some(false)
}