大约有 3,552 项符合查询结果（耗时：0.0232秒） [XML]
SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
...
The transaction log for the database is full
...atabase Properties > Files > Database Files > Path
To check full sql server log: open Log File Viewer at
SSMS > Database > Management > SQL Server Logs > Current
share
|
improv...
A transport-level error has occurred when receiving results from the server [closed]
I'm getting a SQL Server error:
21 Answers
21
...
Return rows in random order [duplicate]
Is it possible to write SQL query that returns table rows in random order every time the query run?
6 Answers
...
Add default value of datetime field in SQL Server to a timestamp
...
In sql server design view i tried it, it say value must match one of the items in list! so i made it on back end side
– shareef
Mar 9 '19 at 4:34
...
Adding an identity to an existing column
...Exec sp_rename 'Names.Id_new', 'ID', 'Column'
See the following Microsoft SQL Server Forum post for more details:
How to alter column to identity(1,1)
share
|
improve this answer
|
...
SELECT INTO using Oracle
...
select into is used in pl/sql to set a variable to field values. Instead, use
create table new_table as select * from old_table
share
|
improve th...
How to get first and last day of previous month (with timestamp) in SQL Server
...
@Thiru Not all SQL softwares allow for 3 arguments in the DATEDIFF() function. I know SQL Server does, but I'm not sure that MySQL does.
– daOnlyBG
May 22 '17 at 15:14
...
Split function equivalent in T-SQL?
...Start > len( @sString )
break
end
RETURN
END
In SQL Server 2008 you can achieve the same with .NET code. Maybe it would work faster, but definitely this approach is easier to manage.
share
...
How to sort the result from string_agg()
...
https://docs.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql?view=sql-server-2017
SELECT
STRING_AGG(prod, '|') WITHIN GROUP (ORDER BY product)
FROM ...
share
...