Skip to content

[SPARK-13283][SQL] Escape column names based on JdbcDialect #11224

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 2 commits into from
Closed

[SPARK-13283][SQL] Escape column names based on JdbcDialect #11224

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
8e143b6
[SPARK-13283][SQL] Escape column names based on JdbcDialect
xguo27 Feb 16, 2016
c9c2f8a
Add integration test
xguo27 Feb 16, 2016
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions ...er-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/MySQLIntegrationSuite.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,9 @@ class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
).executeUpdate()
conn.prepareStatement("INSERT INTO strings VALUES ('the', 'quick', 'brown', 'fox', " +
"'jumps', 'over', 'the', 'lazy', 'dog')").executeUpdate()

conn.prepareStatement("CREATE TABLE keywords (`from` INT, `interval` FLOAT)").executeUpdate()
conn.prepareStatement("INSERT INTO keywords VALUES (23, 25.5)").executeUpdate()
}

test("Basic test") {
Expand Down Expand Up @@ -146,8 +149,10 @@ class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
val df1 = sqlContext.read.jdbc(jdbcUrl, "numbers", new Properties)
val df2 = sqlContext.read.jdbc(jdbcUrl, "dates", new Properties)
val df3 = sqlContext.read.jdbc(jdbcUrl, "strings", new Properties)
val df4 = sqlContext.read.jdbc(jdbcUrl, "keywords", new Properties)
df1.write.jdbc(jdbcUrl, "numberscopy", new Properties)
df2.write.jdbc(jdbcUrl, "datescopy", new Properties)
df3.write.jdbc(jdbcUrl, "stringscopy", new Properties)
df4.write.jdbc(jdbcUrl, "keywordscopy", new Properties)
}
}
12 changes: 8 additions & 4 deletions sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -96,8 +96,12 @@ object JdbcUtils extends Logging {
/**
* Returns a PreparedStatement that inserts a row into table via conn.
*/
def insertStatement(conn: Connection, table: String, rddSchema: StructType): PreparedStatement = {
val columns = rddSchema.fields.map(_.name).mkString(",")
def insertStatement(
conn: Connection,
table: String,
rddSchema: StructType,
dialect: JdbcDialect): PreparedStatement = {
val columns = rddSchema.fields.map(field => dialect.quoteIdentifier(field.name)).mkString(",")
val placeholders = rddSchema.fields.map(_ => "?").mkString(",")
val sql = s"INSERT INTO $table ($columns) VALUES ($placeholders)"
conn.prepareStatement(sql)
Expand Down Expand Up @@ -169,7 +173,7 @@ object JdbcUtils extends Logging {
if (supportsTransactions) {
conn.setAutoCommit(false) // Everything in the same db transaction.
}
val stmt = insertStatement(conn, table, rddSchema)
val stmt = insertStatement(conn, table, rddSchema, dialect)
try {
var rowCount = 0
while (iterator.hasNext) {
Expand Down Expand Up @@ -249,7 +253,7 @@ object JdbcUtils extends Logging {
val sb = new StringBuilder()
val dialect = JdbcDialects.get(url)
df.schema.fields foreach { field => {
val name = field.name
val name = dialect.quoteIdentifier(field.name)
val typ: String = getJdbcType(field.dataType, dialect).databaseTypeDefinition
val nullable = if (field.nullable) "" else "NOT NULL"
sb.append(s", $name $typ $nullable")
Expand Down