Tao Yu

1. SQL annotation errors: [issue 23](https://github.com/taoyds/spider/issues/23), 2. Schema errors: [issue 17](https://github.com/taoyds/spider/issues/17), [issue 20](https://github.com/taoyds/spider/issues/20)

@chrisjbaik Thanks a lot!

Yes! We are planning to fix annotation errors and release Spider 2.0 by January 2020. Also, we will update the evaluation script. Thanks!

Sorry for the delay! We finally corrected some annotation errors and label mismatches (not errors) in Spider dev and test sets (~4% of dev examples updated, click [here](https://github.com/taoyds/spider/commit/25fcd85d9b6e94acaeb5e9172deadeefeed83f5e#diff-18b0a730a7b0d29b0a78a5070d971d49) for more...

a few unexpected table names found in tables.json. e.g. sqlite_sequence table in world_1 database in tables.json. credits to Pedro