我有一个问题,我想更新一个表中的列,用触发器更新同一列,但更新另一个表。它说我不能插入NULL,但是我似乎无法从它从哪里获得这个空值中理解。这是触发因素:
CREATE TRIGGER Custom_WF_Update_WF_DefinitionSteps_DefinitionId ON WF.Definition
AFTER UPDATE AS BEGIN
IF UPDATE(DefinitionId)
IF TRIGGER_NESTLEVEL() < 2
BEGIN
ALTER TABLE WF.DefinitionSteps NOCHECK CONSTRAINT A
我使用下面的类定义
class Workflow
# class << self; attr_acessor :id, :name, :url end
# Please ignore the troubleshooting attemp above it didn't help, I got the ObjectNil
def self.initialize ( id, name, url )
@id = id
@name = name
@url = url
end
# @return [O
在python程序中,我
...
wf = raw_input("enter string \n")
wl = list(wf)
wd = wl[:-4]
#now I want to see if wl is over 20 characters
#if it is, I want it truncated to 20 characters
#if not, I want character appended until it is 20 characters
#if it is 20 characters leave it alone
...
请帮我把评论做得像上面写的那
Noob查询在这里,尝试获取子表中满足某些条件的唯一计数,示例如下: select distinct wi.*
from wf.WorkflowInstance wi
inner join wf.WorkflowInstanceDocument wid on wid.WorkflowInstanceId = wi.Id
where wid.ReceivedDateTime between '1/1/2020' and '1/30/2020' 这很有效,我得到了唯一的记录。然而,我真正想要的是一个计数,所以我有以下内容,无论子表中有多少“文档”,它现在都会给
与一起使用,您似乎可以非常简单地使用他们的可信CA证书来设置SSL。
在按照它们的步骤并根据它们的文档设置我的PHP连接字符串之后,我得到以下错误:
Peer certificate CN=`AZUREREGION.control.database.windows.net' did not match expected CN=`MYDATABASE.mysql.database.azure.com' in testazure.php
通过将连接字符串的主机名从MYDATABASE.mysql.database.azure.com更改为AZUREREGION.control.da