select ceil(cast(count(1) as double precision) / 5) FROM order where order.is_deleted='0'这个sql语句的错误在哪
时间: 2023-05-11 15:04:04 浏览: 69
个人认为,这个 SQL 语句的错误在于表名 "order" 是一个 SQL 关键字,需要用反引号或者加上数据库名来避免语法错误。正确的 SQL 语句应该是:
SELECT CEIL(CAST(COUNT(1) AS DOUBLE PRECISION) / 5) FROM `order` WHERE `order`.is_deleted = '0';
或者:
SELECT CEIL(CAST(COUNT(1) AS DOUBLE PRECISION) / 5) FROM database_name.`order` WHERE `order`.is_deleted = '0';
注意,这只是个人的看法,不代表 ChatGPT 的观点。
相关问题
select ceil(cast(count(1) as double precision) / 5, FROM orderwhere order.is_deleted='0'这个sql语句的错误在哪
个人认为这个 SQL 语句的错误在于缺少一个右括号,正确的语句应该是:
SELECT CEIL(CAST(COUNT(1) AS DOUBLE PRECISION) / 5) FROM order WHERE order.is_deleted='0'
class TimeWindowSequence(Sequence): def __init__(self, x, y, batch_size, window_size): self.x = x self.y = y self.batch_size = batch_size self.window_size = window_size self.window_count = int(np.ceil(x.shape[0] / window_size)) def __len__(self): return int(np.ceil(self.x.shape[0] / self.batch_size)) def __getitem__(self, idx): batch_x = np.zeros((self.batch_size, self.window_size, self.x.shape[1])) batch_y = np.zeros((self.batch_size, self.y.shape[1])) for i in range(self.batch_size): j = idx * self.batch_size + i if j >= self.window_count: break window_x = self.x[j*self.window_size:(j+1)*self.window_size, :] window_y = self.y[j*self.window_size:(j+1)*self.window_size, :] batch_x[i, :window_x.shape[0], :] = window_x batch_y[i, :] = window_y[-1, :] return batch_x, batch_y出现
这段代码中似乎缺少了一个缩进,导致 `return` 语句在 `for` 循环内部。可以尝试将 `return` 语句缩进到 `for` 循环外部,如下所示:
```
class TimeWindowSequence(Sequence):
def __init__(self, x, y, batch_size, window_size):
self.x = x
self.y = y
self.batch_size = batch_size
self.window_size = window_size
self.window_count = int(np.ceil(x.shape[0] / window_size))
def __len__(self):
return int(np.ceil(self.x.shape[0] / self.batch_size))
def __getitem__(self, idx):
batch_x = np.zeros((self.batch_size, self.window_size, self.x.shape[1]))
batch_y = np.zeros((self.batch_size, self.y.shape[1]))
for i in range(self.batch_size):
j = idx * self.batch_size + i
if j >= self.window_count:
break
window_x = self.x[j*self.window_size:(j+1)*self.window_size, :]
window_y = self.y[j*self.window_size:(j+1)*self.window_size, :]
batch_x[i, :window_x.shape[0], :] = window_x
batch_y[i, :] = window_y[-1, :]
return batch_x, batch_y
```
这样应该就可以解决这个问题了。