大约有 41,000 项符合查询结果（耗时：0.0519秒） [XML]
Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
...aster table:
sqlite> CREATE TABLE foo (bar INT, quux TEXT);
sqlite> SELECT * FROM sqlite_master;
table|foo|foo|2|CREATE TABLE foo (bar INT, quux TEXT)
sqlite> SELECT sql FROM sqlite_master WHERE name = 'foo';
CREATE TABLE foo (bar INT, quux TEXT)
...
Adding an identity to an existing column
... )
ON [PRIMARY]
go
SET IDENTITY_INSERT dbo.Tmp_Names ON
go
IF EXISTS ( SELECT *
FROM dbo.Names )
INSERT INTO dbo.Tmp_Names ( Id, Name )
SELECT Id,
Name
FROM dbo.Names TABLOCKX
go
SET IDENTITY_INSERT dbo.Tmp_Names OFF
go
DROP...
mingw-w64 threads: posix vs win32
...API) which GCC can then link in to enable all the fancy features." So if i select the win32 model, GCC can still enable all the features, because it makes use of winpthreads? But in the bullet below, you write "win32: No C++11 multithreading features". I don't understand. Does "which GCC can then li...
Java project in Eclipse: The type java.lang.Object cannot be resolved. It is indirectly referenced f
...teps could help:
Right-click on project » Properties » Java Build Path
Select Libraries tab
Find the JRE System Library and remove it
Click Add Library... button at right side » Add the JRE System Library (Workspace default JRE)
...
Remove all unused resources from an android project
...
OR
In Android Studio Menu > Refactor > Remove Unused Resources...
Select the resources you want to remove. You can exclude resources you want to keep by right-clicking on the resource item.
Use Do Refactor to remove all Resources at once.
Update: use ⌘OptionShifti for mac
...
How can I tell how many objects I've stored in an S3 bucket?
...
@G-. What if you select all of the bucket's folders?
– gvasquez
Feb 9 '18 at 17:03
4
...
Multiple cases in switch statement
...
This syntax is from the Visual Basic Select...Case Statement:
Dim number As Integer = 8
Select Case number
Case 1 To 5
Debug.WriteLine("Between 1 and 5, inclusive")
' The following is the only Case clause that evaluates to True.
Case 6, ...
How to Execute SQL Server Stored Procedure in SQL Developer?
...
Yea..try selecting some records and executing some simple commands see if anything at all works!..best of luck..
– Vishal
Nov 9 '10 at 18:22
...
Paste in insert mode?
... where register can be:
+ for the clipboard,
* for the X clipboard (last selected text in X),
" for the unnamed register (last delete or yank in Vim),
or a number of others (see :h registers).
Ctrl-R {register} inserts the text as if it were typed.
Ctrl-R Ctrl-O {register} inserts the text wit...
Why all the Active Record hate? [closed]
...need to write raw SQL, it's easily done.
@Tim Sullivan
...and you select several instances of the model, you're basically doing a "select * from ..."
Code:
people = Person.find(:all, :select=>'name, id')
This will only select the name and ID columns from the database, all the other ...