2013年08月12 - I am having a query like this
我有这样的查询
SELECT firstName
FROM student
WHERE LEN(firstName) > 5
There is a Non-Clustered Index on the 'firstName'
2014年03月04 - I want to compare the current row with a value in the next row. SQL has LEAD and LAG functions to get the next and previous values but I can not use t
2015年02月16 - I'm not familiar with sql servers. I've very long query which took from other tech guy. I need update this query with top clause for filter first 10 r
2011年11月17 - Currently working on improving the efficiency of a few queries. After looking at the query plan I found that SQL is not performing parallelism when a
2015年12月04 - I need to create a SQL statement to check where condition if the column is null, it will do other condition. Below is my example:
我需要创建一个SQL语句来检查列为空的条
2015年07月27 - I'm trying to write a SQL query that will return a list of aggregated values; however, I want to group the query by one of the aggregated values (a co
2015年06月25 - Here is a simple example - why does this work:
这是一个简单的例子 - 为什么这个工作：
DECLARE @v as varchar(75)
SET @v = 'xxx-xxxx'
SELECT * FROM tbl_skus WHERE SKU =
2014年06月03 - I am wondering why the below SQL statement behaves the way that it does:
我想知道为什么以下SQL语句的行为方式如下:
select *
from tableA
where document_id in (select d
2012年01月20 - I have a stored procedure which uses the IN clause. In my ASP.NET application, I have a multiline textbox that supplies values to the stored procedure
