大约有 32,000 项符合查询结果(耗时:0.0417秒) [XML]
List of foreign keys and the tables they reference
...o a specific table that I specify, in Oracle?". With constraint_name I can then do my analysis. Tip: add " owner='MY_SCHEMA_HERE' " to clarify results. Very good.
– Diego1974
Mar 1 '18 at 11:46
...
How to check if a python module exists without importing it
...loader is not None
My expectation being, if you can find a loader for it, then it exists. You can also be a bit more smart about it, like filtering out what loaders you will accept. For example:
import importlib
spam_loader = importlib.find_loader('spam')
# only accept it as valid if there is a s...
Inserting image into IPython notebook markdown
...eople have alluded to here.
1) Simply create an empty Markdown cell.
2) Then drag-and-drop the image file into the empty Markdown cell.
The Markdown code that will insert the image then appears.
For example, a string shown highlighted in gray below will appear in the Jupyter cell:
![Ven...
How to perform mouseover function in Selenium WebDriver using Java?
...ly.
So, as the manual way I am trying to hover over the drop down menu and then will click the new options.
8 Answers
...
On - window.location.hash - Change?
...ou are using jQuery (which today should be somewhat foundational for most) then a nice solution is to use the abstraction that jQuery gives you by using its events system to listen to hashchange events on the window object.
$(window).on('hashchange', function() {
//.. work ..
});
The nice thing...
Relational Database Design Patterns? [closed]
....g., chapter 4 covers hierarchies/aggregations/peer-to-peer scenarios, and then offers multiple designs that address those WITH pros and cons of each.
– DarrellNorton
Jun 16 '13 at 10:59
...
What are Maven goals and phases and what is their difference?
...u execute maven you can specify a goal or a phase. If you specify a phase then maven will run all phases up to the phase you specified in order (e.g. if you specify package it will first run through the compile phase and then the test phase and finally the package phase) and for each phase it will ...
Storing JSON in database vs. having a new column for each key
...enly a real pain point. Sometimes that point creeps up really quickly and then it becomes hard to change because we've built so many other things on top of this design decision.
Overtime, adding new features, having the data in JSON led to more complicated looking queries than what might have been...
Remove credentials from Git
....helper=manager. To test this type git config --list. If it's set to store then credentials are not stored in the credentials store but are stored un-encrypted.
– Liam
Dec 14 '17 at 10:48
...
Cherry pick using TortoiseGit
...
Open "Show log", then I activated "All branches" and then I got visible all branches (with their commit history) and then the possibility to cherry pick got active as well (as noted before, I got a commit which wasn't present in the current b...
