| Query | Run |
|---|---|
| use urwiki_p; select substr(rev_timestamp,1,4) as... | 1 year ago |
| use knwiki_p; select substr(rev_timestamp,1,4) as... | 1 year ago |
| use tewiki_p; select substr(rev_timestamp,1,4) as... | 1 year ago |
| use tewiki_p; select substr(rev_timestamp,1,4) as... | 1 year ago |