大约有 31,500 项符合查询结果（耗时：0.0548秒） [XML]
How do I use the CONCAT function in SQL Server 2008 R2?
...he + operator, as @lynn-langit mentions in her answer, which I at first totally missed because I only read the accepted answer...
– Svish
May 19 '15 at 13:11
7
...
How to find the mysql data directory from command line in windows
In linux I could find the mysql installation directory with the command which mysql . But I could not find any in windows. I tried echo %path% and it resulted many paths along with path to mysql bin.
...
MySQL Conditional Insert
... AND item = 456)
In this, dual is a table with one row only (found originally in Oracle, now in mysql too). The logic is that the SELECT statement generates a single row of data with the required values, but only when the values are not already found.
Alternatively, look at the MERGE statement.
...
How do I convert a numpy array to (and display) an image?
...good to know: If you want to display grayscale images, it is advisable to call plt.gray() once in your code to switch all following graphs to grayscale. Not what the OP wants but good to know nevertheless.
– Cerno
Feb 28 '17 at 12:21
...
Cast to int vs floor
...dited Dec 30 '14 at 21:44
Matt Ball
323k8585 gold badges599599 silver badges672672 bronze badges
answered Jul 21 '10 at 14:39
...
What is the difference between pull and clone in git?
...
They're basically the same, except clone will setup additional remote tracking branches, not just master. Check out the man page:
Clones a repository into a newly created directory, creates remote-tracking branches for each branch in ...
Vertex shader vs Fragment Shader [duplicate]
...r example: if you want your polygon to be completely red, you would define all vertices red. If you want for specific effects like a gradient between the vertices, you have to do that in the fragment shader.
Put another way:
The vertex shader is part of the early steps in the graphic pipeline, som...
possibly undefined macro: AC_MSG_ERROR
... this same issue and found that pkg-config package was missing.
After installing the package, everything generated correctly.
share
|
improve this answer
|
follow
...
Devise Secret Key was not set
...ting somewhere in plain text in the source, correct? At least this default allows us to set up dynamic secret keys in fewer places.
– Topher Hunt
Jun 1 '14 at 16:19
...
CSS table layout: why does table-row not accept a margin?
...ered Jan 2 '10 at 23:42
richardtallentrichardtallent
31.4k1313 gold badges7575 silver badges111111 bronze badges
...