摘要:
SELECT count(*) AS cnt FROM sqlite_master WHERE type='table' AND name='table_name';cnt will return 0, if the table doesn't exist, 1 if it does. 或者, SE 阅读全文
摘要:
Most people want to be fit, most people aren’t. Most people want to build a successful business, most people won’t. Most people want to be the best ve 阅读全文