摘要:
select phone,count(order_id) as c from table_recordgroup by phoneorder by c desc SELECT CASEWHEN (age >= 10 AND age <= 20) THEN '10-20'WHEN (age >= 21 阅读全文
摘要:
[inside this square brackets give a name to the followed acc.] name = github_username email = github_emailaddress[any other name] name = github_userna 阅读全文