大约有 47,000 项符合查询结果（耗时：0.0444秒） [XML]
DBMS_OUTPUT.PUT_LINE not printing
...tion i want it to (firstName, lastName) and then the other values from the select query in a table below.
6 Answers
...
How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
... write a plugin that would do something like: SampleModel.find(:all, :select => "DISTINCT(*)", :conditions => ["date > #{self.date}"], :limit => 1, :order => 'date', :group => "date").show_generated_sql and have this call the construct_finder_sql method.
...
A CSS selector to get last visible div
A tricky CSS selector question, don't know if it's even possible.
10 Answers
10
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How do I delete from multiple tables using INNER JOIN in SQL server
...(you want to delete) to temporary table
INSERT INTO #DeleteIds(Id)
SELECT DISTINCT mt.MasterTableId
FROM MasterTable mt
INNER JOIN ...
WHERE ...
-- delete from first detail table using join syntax
DELETE d
FROM DetailTable_1 D
INNER JOIN #DeleteIds X
ON D.MasterTableId...
When to use single quotes, double quotes, and backticks in MySQL
...ng query will produce different results (or errors) depending on SQL mode:
SELECT "column" FROM table WHERE foo = "bar"
ANSI_QUOTES disabled
The query will select the string literal "column" where column foo is equal to string "bar"
ANSI_QUOTES enabled
The query will select the column column where ...
Adding custom radio buttons in android
...
Add a background drawable that references to an image, or a selector (like below), and make the button transparent:
<RadioButton
android:id="@+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@null"
android:...
What is in your Mathematica tool bag? [closed]
...pplication of Reap and Sow which mimics/extends the behavior of GatherBy:
SelectEquivalents[x_List,f_:Identity, g_:Identity, h_:(#2&)]:=
Reap[Sow[g[#],{f[#]}]&/@x, _, h][[2]];
This allows me to group lists by any criteria and transform them in the process. The way it works is that a c...
Remove empty space before cells in UITableView
...e first one.
Here's how to change this behavior:
a) Interface Builder
Select the view controller
Open Attributes inspector
There's a property called "Adjust scroll view insets" in IB's attribute inspector (when a view controller is selected) which is on by default. Uncheck this option:
(Image...
Oracle: how to UPSERT (update or insert into a table?)
...e mergetest(a number, b number);
call ups(10);
call ups(10);
call ups(20);
select * from mergetest;
A B
---------------------- ----------------------
10 2
20 1
s...
How to fix Python indentation
... do this:
$ # see what changes it would make
$ autopep8 path/to/file.py --select=E101,E121 --diff
$ # make these changes
$ autopep8 path/to/file.py --select=E101,E121 --in-place
Note: E101 and E121 are pep8 indentation (I think you can simply pass --select=E1 to fix all indentation related issue...