So my point is CASE1 is not a table with duplicate rows as there is a unique identifier (even though col1 and col2 have duplicate values). But CASE2 is. You can delete the duplicate valued rows of col1 and col2 from CASE1 using ROW_NUMBER(). But cannot do this for CASE2. SSC ...
I think the motivation for excluding an identity column is likely to be that there is a single column primary key which is neither a natural key nor a surrogate for a natural key but just a meaningless number based on how many rows were inserted before this one Sure. Excluding any...
SQL Server : find duplicates in ntext columnThis is a bit tricky, because as you write, it's...
SQL Server Find out whether a table has some unique columnsHere's an approach that is basically ...
pt-find这个工具,和Linuxfind命令类似,通过SHOW TABLE STATUS方式,查找特定的表并执行一些SQL语句,对于日常运维工作也是有比较大的帮助。 pt-find 基本用法 (1)基本语法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 pt-find[OPTIONS][DATABASES]
Another method to find duplicate records is to use anINNER JOINto join the table with itself based on specific columns. The self-join method compares all rows from the first copy with all rows from the second copy. See the example below: ...
What is the best way to find rows where a datetime is included in the range of two datetime columns [duplicate]Ask Question Asked 3 years, 8 months ago Modified 3 years, 8 months ago Viewed 671 times Report this ad1 This question already has answers here: Most...
This is my first time posting so bear with me. I need to be able to find only the cells that have a unique number in that set.For example, in the columns...
Cannot insert duplicate key row in object 'dbo.blabla..' with unique index 'Idx_blablabl'. The statement has been terminated. at Cannot kill a session that is running a query on a linked server in SQL Server 2008 R2 cannot kill process in SQL Server Activity Monitor Cannot Kill Process st...
Now run the SQL below, if you have rows coming back then you have objects that exists in more than on project. You will need to examine the MIN(PROKECTNAME) AND MAX(PROJECTNAME) columns and decide in which project to keep the duplicate object. To take an object off a project, just...