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[WIP][SPARK-28151][SQL] Mapped ByteType to TinyINT for MsSQLServerDialect #25344

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[WIP][SPARK-28151][SQL] Mapped ByteType to TinyINT for MsSQLServerDialect #25344

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1abf3fc
Fix for ByteType. Mapping of ByteType is changed to TinyInt in MsSQLS…
shivsood Aug 3, 2019
3a5a621
fixed Numeric types test. tinyint should be compared with java.lang.b…
shivsood Aug 5, 2019
7658bbc
Fixed test. Added test to validate broader value range and col data t…
shivsood Oct 15, 2019
ec5315d
test fix to use testimplicits for simplicity
shivsood Oct 30, 2019
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25 changes: 23 additions & 2 deletions ...egration-tests/src/test/scala/org/apache/spark/sql/jdbc/MsSqlServerIntegrationSuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -119,7 +119,7 @@ class MsSqlServerIntegrationSuite extends DockerJDBCIntegrationSuite {
val types = row.toSeq.map(x => x.getClass.toString)
assert(types.length == 12)
assert(types(0).equals("class java.lang.Boolean"))
assert(types(1).equals("class java.lang.Integer"))
assert(types(1).equals("class java.lang.Byte"))
assert(types(2).equals("class java.lang.Short"))
assert(types(3).equals("class java.lang.Integer"))
assert(types(4).equals("class java.lang.Long"))
Expand All @@ -131,7 +131,7 @@ class MsSqlServerIntegrationSuite extends DockerJDBCIntegrationSuite {
assert(types(10).equals("class java.math.BigDecimal"))
assert(types(11).equals("class java.math.BigDecimal"))
assert(row.getBoolean(0) == false)
assert(row.getInt(1) == 255)
assert(row.getByte(1) == 255.toByte)
assert(row.getShort(2) == 32767)
assert(row.getInt(3) == 2147483647)
assert(row.getLong(4) == 9223372036854775807L)
Expand Down Expand Up @@ -202,4 +202,25 @@ class MsSqlServerIntegrationSuite extends DockerJDBCIntegrationSuite {
df2.write.jdbc(jdbcUrl, "datescopy", new Properties)
df3.write.jdbc(jdbcUrl, "stringscopy", new Properties)
}

test("Write tables with BYTETYPE") {
import testImplicits._
val df = Seq(-127.toByte, 0.toByte, 1.toByte, 38.toByte, 128.toByte).toDF("a")
val tablename = "bytetable"
df.write
.format("jdbc")
.mode("overwrite")
.option("url", jdbcUrl)
.option("dbtable", tablename)
.save()
val df2 = spark.read
.format("jdbc")
.option("url", jdbcUrl)
.option("dbtable", tablename)
.load()
assert(df.count == df2.count)
val rows = df2.collect()
val colType = rows(0).toSeq.map(x => x.getClass.toString)
assert(colType(0) == "class java.lang.Byte")
}
}
2 changes: 1 addition & 1 deletion sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala
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Expand Up @@ -550,7 +550,7 @@ object JdbcUtils extends Logging {

case ByteType =>
(stmt: PreparedStatement, row: Row, pos: Int) =>
stmt.setInt(pos + 1, row.getByte(pos))
stmt.setByte(pos + 1, row.getByte(pos))

case BooleanType =>
(stmt: PreparedStatement, row: Row, pos: Int) =>
Expand Down
2 changes: 2 additions & 0 deletions sql/core/src/main/scala/org/apache/spark/sql/jdbc/MsSqlServerDialect.scala
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Expand Up @@ -33,6 +33,7 @@ private object MsSqlServerDialect extends JdbcDialect {
sqlType match {
case java.sql.Types.SMALLINT => Some(ShortType)
case java.sql.Types.REAL => Some(FloatType)
case java.sql.Types.TINYINT => Some(ByteType)
case _ => None
}
}
Expand All @@ -44,6 +45,7 @@ private object MsSqlServerDialect extends JdbcDialect {
case BooleanType => Some(JdbcType("BIT", java.sql.Types.BIT))
case BinaryType => Some(JdbcType("VARBINARY(MAX)", java.sql.Types.VARBINARY))
case ShortType => Some(JdbcType("SMALLINT", java.sql.Types.SMALLINT))
case ByteType => Some(JdbcType("TINYINT", java.sql.Types.TINYINT))
case _ => None
}

Expand Down