大约有 42,000 项符合查询结果(耗时:0.0356秒) [XML]
How to check if a stored procedure exists before creating it
...tly same things a stored proc would do, but is not stored on the database side.
That's much like what is called anonymous procedure in PL/SQL.
Update:
Your question title is a little bit confusing.
If you only need to create a procedure if it not exists, then your code is just fine.
Here's what...
Spring JPA selecting specific columns
...lass like this:
public static final String FIND_PROJECTS = "SELECT projectId, projectName FROM projects";
@Query(value = FIND_PROJECTS, nativeQuery = true)
public List<Object[]> findProjects();
Note that you will have to do the mapping yourself though. It's probably easier to just use the ...
Google Chrome Extensions - Can't load local images with CSS
...eature to modify a website. More specifically, the background-image of said website.
8 Answers
...
Check if table exists in SQL Server
...
A response below that uses the OBJECT_ID function does operate correctly regarding per connection temp tables - stackoverflow.com/a/2155299/16147
– Rich Rousseau
Sep 4 '12 at 15:09
...
How do I create a URL shortener?
...oach. However, you will realize that your proposed algorithm fails if your ID is a prime and greater than 52.
Theoretical background
You need a Bijective Function f. This is necessary so that you can find a inverse function g('abc') = 123 for your f(123) = 'abc' function. This means:
There must ...
How to draw circle in html page?
...
You can't draw a circle per se. But you can make something identical to a circle.
You'd have to create a rectangle with rounded corners (via border-radius) that are one-half the width/height of the circle you want to make.
#circle {
width: 50px;
height: 50px;
...
Difference Between One-to-Many, Many-to-One and Many-to-Many?
... One Person Has Many Skills, a Skill is not reused between Person(s)
Unidirectional: A Person can directly reference Skills via its Set
Bidirectional: Each "child" Skill has a single pointer back up to the
Person (which is not shown in your code)
Many-to-Many: One Person Has Many Skil...
Find the index of a dict within a list, by matching the dict's value
... name (using a dictionary), this way get operations would be O(1) time. An idea:
def build_dict(seq, key):
return dict((d[key], dict(d, index=index)) for (index, d) in enumerate(seq))
info_by_name = build_dict(lst, key="name")
tom_info = info_by_name.get("Tom")
# {'index': 1, 'id': '2345', 'na...
How do I open the SearchView programmatically?
There is this widget for the ActionBar which called 'SearchView'.
When it's not in use, it looks like this:
7 Answers
...
How can one see the structure of a table in SQLite? [duplicate]
... todos_server_snapshot
sqlite> .schema alarms
CREATE TABLE alarms (ROWID INTEGER PRIMARY KEY AUTOINCREMENT, alarm_id,
todo INTEGER, flags INTEGER, offset_days INTEGER,
reminder_date INTEGER, time INTEGER, argument,
unrecognized_data...