Add support for camel case column names in target for insert-from-sql

Author: hlcianfagna

README.rst

@@ -190,7 +190,7 @@ Copies data from one CrateDB cluster or PostgreSQL server to another.
     ...   --query "SELECT name FROM x.demo" \
     ...   --hosts localhost:4200 \
     ...   --table y.demo \
-    INSERT INTO y.demo (name) VALUES ($1)
+    INSERT INTO y.demo ("name") VALUES ($1)
     Runtime (in ms):
     ...
 

cr8/insert_from_sql.py

@@ -12,7 +12,7 @@
 
 
 def mk_insert(table, attributes):
-    columns = ', '.join((x.name for x in attributes))
+    columns = ', '.join(('"' + x.name + '"' for x in attributes))
     params = ', '.join((f'${i + 1}' for i in range(len(attributes))))
     return f'INSERT INTO {table} ({columns}) VALUES ({params})'