Spark JDBC MySQL Syntax Error with column names with spaces - mysql

Question

I'm querying a MySQL table using PySpark JDBC. The problem I'm facing is that said table has column names with spaces.
In MySQL Workbench I would do the query like this to get the data and that works fine.
select
`some id`
from
table
But when I do it via PySpark like this:
query = 'select `some id` from table'
df = sqlContext.read.format('jdbc') \
.options(
driver = 'com.mysql.jdbc.Driver'
, url = some_connection_url
, dbtable = query
, user = user
, password = password
).load()
I get the following error message:
Py4JJavaError: An error occurred while calling o497.load.
: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'select
`some id`
from
some_table WHERE 1=0' at line 1
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCRDD$.resolveTable(JDBCRDD.scala:61)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCRelation$.getSchema(JDBCRelation.scala:210)
at org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:35)
at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:318)
at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:223)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:211)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:167)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
I've tried quoting the column names with [] and "" but I get the same error message.
I'm also using the latest MySQL jars: mysql-connector-java-8.0.21.jar and Spark 2.4.
Any insights are highly appreciated.

Answer 1

Enclose your query in brackets () then try to pass to read.format("jdbc").
Example:
query = '(select `some id` from table)e'
df = sqlContext.read.format('jdbc') \
.options(
driver = 'com.mysql.jdbc.Driver'
, url = some_connection_url
, dbtable = query
, user = user
, password = password
).load()