大约有 9,000 项符合查询结果（耗时：0.0278秒） [XML]
Show MySQL host via SQL Command
...st comment,
I don't think you can resolve IP for the hostname using pure mysql function,
as it require a network lookup, which could be taking long time.
However, mysql document mention this :-
resolveip google.com.sg
docs :- http://dev.mysql.com/doc/refman/5.0/en/resolveip.html
...
Remove all files except some from a directory
...
rm !(textfile.txt|backup.tar.gz|script.php|database.sql|info.txt)
The extglob (Extended Pattern Matching) needs to be enabled in BASH (if it's not enabled):
shopt -s extglob
share
|
...
Entity Framework 6 Code first Default value
...s for base types. For something like DATETIMEOFFSET, use the , defaultValueSql: "SYSDATETIMEOFFSET", and NOT the defaultValue as this defaultValue: System.DateTimeOffset.Now, will resolve to a string of the current system datetimeoffset value.
– OzBob
Apr 15 '1...
SQL Server - SELECT FROM stored procedure
...ble variable
exactly as you would any other
table...
... sql ....
Declare @T Table ([column definitions here])
Insert @T Exec storedProcname params
Select * from @T Where ...
share
|
...
Why does using an Underscore character in a LIKE filter give me all the results?
I wrote the below SQL query with a LIKE condition:
6 Answers
6
...
How do you manage databases in development, test, and production?
...readable also at http://martinfowler.com/articles/evodb.html
In one PHP+MySQL project I've had the database revision number stored in the database, and when the program connects to the database, it will first check the revision. If the program requires a different revision, it will open a page for ...
How to split a comma-separated value to columns
...does not even solve the issue There are much better approaches around! For SQL-Server 2016+ look for STRING_SPLIT() (which does not carry the fragment's position, a huge fail!) or the really fast JSON-hack. For older version look for the well-known XML-hack (json and xml details here). Or look for o...
Like Operator in Entity Framework?
...sing EF 6.2.x. To this answer if you're using EF Core 2.x
Short version:
SqlFunctions.PatIndex method - returns the starting position of the first occurrence of a pattern in a specified expression, or zeros if the pattern is not found, on all valid text and character data types
Namespace: System...
Get size of all tables in database
I have inherited a fairly large SQL Server database. It seems to take up more space than I would expect, given the data it contains.
...
Multiline strings in VB.NET
...
Multi-line strings are available since the Visual Studio 2015.
Dim sql As String = "
SELECT ID, Description
FROM inventory
ORDER BY DateAdded
"
You can combine them with string interpolation to maximize usefullness:
Dim primaryKey As String = "ID"
Dim inventoryTable As String = ...