Enable case sensitivity for spark.sql globally

As it turns out setting

spark.sql.caseSensitive: True

in $SPARK_HOME/conf/spark-defaults.conf DOES work after all. It just has to be done in the configuration of the Spark driver as well, not the master or workers. Apparently I forgot that when I last tried.

Yet another way for PySpark. Using a SparkSession object named spark:

spark.conf.set('spark.sql.caseSensitive', True)