我不知道为什么老是回来:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM vendas LEFT JOIN clientes c ON c.id = vendas.idCliente AND c.idRespons' at line 2
Mysql查询:
UPDATE vendas
FROM vendas
LEFT JOIN cli
可能重复:
我得到了这个错误:
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/valerie2/public_html/elinkswap/snorris/filename.php on line 89
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/valerie2/public_html/elinkswap/snor
我跑了
flask db upgrade
并接收到错误
VARCHAR requires a length on dialect mysql
所以我修改了我的VARCHAR,添加了下面这样的长度
username = db.Column(db.VARCHAR(256))
然后我跑了
flask db migrate
并得到错误
Target database is not up to date.
现在我被卡住了。我陷入了“第22条军规”。我无法使用VARCHAR(256)迁移到数据库,因为我的数据库不是最新的。我无法使我的数据库保持最新状态,因为VARCHAR的迁移(没有'256