大约有 6,000 项符合查询结果(耗时:0.0154秒) [XML]
SQL Server: Query fast, but slow from procedure
...ariables to be declared in order to prevent parameter sniffing?? Shouldn't SQL Server be smart enough to prevent this from happening in the first place? This just causes unnecessary code bloat by Microsoft's shortsighted design IMHO.
– l46kok
Feb 24 '15 at 6:53...
How do I drop a function if it already exists?
...atch is what type of function you are trying to delete (denoted in the top sql by FN, IF and TF):
FN = Scalar Function
IF = Inlined Table Function
TF = Table Function
share
|
improve this answer
...
SQLAlchemy: print the actual query
I'd really like to be able to print out valid SQL for my application, including values, rather than bind parameters, but it's not obvious how to do this in SQLAlchemy (by design, I'm fairly sure).
...
The cast to value type 'Int32' failed because the materialized value is null
...
A linq-to-sql query isn't executed as code, but rather translated into SQL. Sometimes this is a "leaky abstraction" that yields unexpected behaviour.
One such case is null handling, where there can be unexpected nulls in different pl...
SQL: How to properly check if a record exists
While reading some SQL Tuning-related documentation, I found this:
9 Answers
9
...
大单融资后,MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术
...是其必然的发展方向。
“海外的大学已经通过MOOC提供了包括AP课程、本科、硕士、博士等在内的所有教育体系,目前清华大学也已经提供了二学位、MBA和硕士教育的课程学习。”张有明表示,“高等教育在任何国家都是由国家...
SQL update query using joins
...
FYI this will NOT work in MySQL (different syntax)! For MySQL have a look at gcbenison's answer
– Sliq
Jan 17 '17 at 16:28
...
Add a column with a default value to an existing table in SQL Server
How can I add a column with a default value to an existing table in SQL Server 2000 / SQL Server 2005 ?
41 Answers
...
Difference between one-to-many and many-to-one relationship
...at may be associated with many rows in another table. In the example from SQL for beginners, one Customer may be associated to many Orders.
In the opposite many-to-one relationship, the local table may have many rows that are associated with one row in another table. In our example, many Orders m...
SQL command to display history of queries
I would like to display my executed sql command history in my MYSQL Query Browser. What is the sql statement for displaying history?
...