ENH: SQL Enhancement for the Future
0.14 Enhancements : #6292
- [x] handle no rows returns from a sql query, #3745 
- [ ] option for default_charset to sql.write_frame #5008 
- [x] sql to provided NaN/NaT conversions #2754 -> PR #8208
- [x] specify chunksize for sql.read_frame #2908 -> PR #8330 
- [ ] SQL through SQLAlchemy - check performance #6416
- [ ] mangle_dup_columns for read_frame (#2738)
